48
Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy-Density Science 2020 SSAP symposium, Feb 27, 2020 E. S. Lavine 1
Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy-Density Science
2020 SSAP symposium Feb 27 2020E S Lavine
1
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
2
Mission of the Multi-University Center
Advance the understanding of current-driven High Energy Density (HED) plasmas
through experiments supported by computer simulations and theoretical modeling
Investigate the application of current driven HED plasmas to inertial fusion energy
intense radiation generation laboratory plasma astrophysics etc
Develop new diagnostics for HED research bring capabilities from international
partners to the US community
Develop advanced numerical algorithms for HED plasma simulation using the extended
MHD (XMHD) models (PERSEUS and GORGON)
Train a new generation of HED research scientists
3
Center Partners
Cornell University Ithaca NY Awarded Cooperative Agreement ndashDrs David Hammer and Bruce Kusse Co-PIs
University of California San Diego - Dr Simon Bott-Suzuki PI
University of Michigan ndash Dr Ryan McBride PI
Princeton University ndash Dr Nathanial Fisch PI
Imperial College London UK ndash Dr Simon Bland PI
Weizmann Institute of Science Rehovot Israel ndash Dr Yitzhak Maron PI
PN Lebedev Institute Moscow Russia ndash Dr Sergei Pikuz PI
4
Lebedev Physical Institute
Most Important Center
Resource is People
Faculty David HammerBruce KusseCharles Seyler
Senior Research AssociatesJohn Greenly Steven Lantz (part time)
Research AssociatesE Sander Lavine
Visiting Senior Scientists (part time)Niansheng QiSergei PikuzTania Shelkovenko
Technical Staff Todd Blanchard Daniel Hawkes William PotterHarry Wilhelm
Administrative Aide Cindy Vanostrand
Graduate Students (2019-rsquo20) Jay AngelJacob Banasek (now at UCSD)Owen ChenAhmed ElshafieyJason Hamilton Thomas HentschelJeffrey Musk JrSophia Rocco
4 Undergraduate this semester Paul BeckJake LawsonHodaya ProppPaco RillorazaAlejandro Mesa Dame
5
Cornell
Faculty Ryan McBrideGraduate Students (2019-rsquo20)
Paul CampbellStephanie MillerAkash ShahJeff Woolstrum
Undergraduate Students (2019-rsquo20)Thomas Mundy
partial funding through center grant or collaboration with center partners
Faculty Simon BlandSergey LebedevJeremy Chittenden
PostdocsfellowsLee SuttleChris WalshEllie Tubman (Livermore)F Suzuki-VidalD Yanuka
Graduate StudentsA BoxallJWD HallidayJ MacDonaldD Russell
Faculty Yitzhak MaronYuri Zarnitsky
Senior staff scientistsEyal Kroupp
Postdoctoral FellowsDimitry MikitchukMarko CvejicTal Queller
Technical staffShimon Shargorodsky
Faculty Simon Bott-SuzukiGraduate Students (2019-rsquo20)
Sam Cordaro
Faculty Sergey PikuzTatiana Shelkovenko
Senior Research ScientistsAleksey AgafonovIvan Tilikin
Techincal StaffSergey Mishin
WIS
Faculty Nathaniel FischSenior Researchers
Vladimir MalkinPostdoc Seth DavidovitsGraduate Students (2019-rsquo20)
Alec GriffithElijah KolmsMikhail MlodikIan Ochs
supported by outside fellowship 6
Graduate Students (cont)N SchwartzJ StruckaS TheocharousJ Yan
Undergrads (2019-rsquo20)Alice ReadEmmanuele PanellaT GheorghiuB KrawczykZ Zhao
Lebedev Physical Institute
Most Important Center
Resource is People
7
Center Contributions
(FY 2019)
bull 19 Peer reviewed publications
bull 10 Conference proceedings
bull 10 Invited Talks
bull 51 Contributed talksposters
Research Topics in the Multi-University Center
bull Fundamental HED plasma physics
bull MagLIF ICF and HED radiation source physics
bull Laboratory Astrophysics
bull HED diagnostic development
bull Advanced computer simulation codes
8
bull Gas-puff z-pinches Characterize energy flow in detail Instability studies and dynamics XMHD effects
bull Shocks ndash collisional vs collisionless radiative vs non-radiative
bull Cylindrical liners Configurations driven by rotating field Anomalous current penetration due to azimuthal asymmetries Understanding inner and outer ablation phenomena
bull Radialconical wire arraysfoils ndash laboratory jets
bull Implodingexploding wire arrays
bull X-pinches
bull Novel configurationsexperiments
bull Power feed plasma flow
Opportunities for Training and
Professional Development
9
bull All (experimental) graduate students and postdocs are expected to design and lead experiments on pulsed power machines operated by center partners
bull Learn aboutmaintainupgrade pulsed power technologies
bull Gain experience with diagnostics and analysis techniques relevant to HED plasmas
bull Collaboration and training with center partners and national labs
bull Access to state-of the-art simulation codes used by center partners
bull Significant undergraduate training opportunities ranging from hands-on experimental work to simulation code development
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
10
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
11
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
Typical pulse shapes (Self-break)
COBRA Cornellrsquos ~1012 W 106 A 100-220 ns rise time 05120512pulsed power machine is used to produce high energy density plasmas
Reached 5000 shots in summer 2018 (now about 5700)
12
Half-machine mode ndash Highly reproducible 750 kA 120 ns rise time
Current
Voltage
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
13
Output Switches
XP ndash lsquosmall machinersquo capable of 250 kA 50 ns or 350 kA 150 ns
Primarily used for x-pinch studies
Fast pulse
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Marx Generator Systems at
Center Partners
14
MAGPIE ndash Imperial College 14 MA ~1012 W 250 ns rise time
Some Center Partners have LTDs
(Linear Transformer Drivers)
15
(a)
(b)
3-m-diameter MAIZE LTD (UM) (a) cutaway drawing (b) open-top system photo has 40 bricks in parallel in one stage Each brick has a switch (1) between two capacitors (2) iron cores (3) high voltage insulators (4) coaxial (5) and radial (6) transmission lines delivering current to conical power feed (7) and the vacuum load region (8)
Basic LTD circuit High-120641 ferromagnetic core increases inductance of undesiredparasitic surface current path
Build pulsed-power machine with ldquobricksrdquo in parallel (series) for more current (voltage)
Highly Capable Diagnostic Suites
Characterize Major Center Facilities
16
Pre-ionizer
PCDs
119861119911 field coils
Filtered X-raypinholes
X-ray pinholecamera
Diagnostic Laser(Mach ZehnderLaser ShearingInterferometryshadowgraphy)
10 J laser(Thomson Scattering)
XUV Quad Cams
Fibers
Fibers
12-frame
(a) (b)
(c)
(a) High-speed 12 frame camera (VisibleUV upgrade)(b) 10 J 3 ns 527 nm Laser for Thomson Scattering(c) Visible spectroscopy streak photography and PLIF
system
Examples shown at CU
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research Highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
17
Working to Understand Gas-Puff
Z-Pinch implosions
18
Neutral gas injection
Interaction of axial current and induced azimuthal field drives radial implosion
119869119911119861120579
StagnationThermalizationRadiation
Working to Understand Gas-Puff
Z-Pinch implosions
19
Energy partition and turbulence
Sophia Rocco(CU ndash HEDP 3)
WIS ndash Spectroscopic measurements suggest 119879119894 dominated by nonthermal
hydrodynamic KE near stagnation (119879119894119890119891119891
gt 119879119894)
Princeton ndash Sudden viscous dissipation mechanism can rapidly convert turbulent KE into thermal energy
Cornell ndash Identify origin of the difference between 119879119894 and 119879119894119890119891119891
using Thomson
scattering
Variable 119879119894119879119894 = 119879119890+Gaussian Velocity dist
20
bull MicrowaveIR Radiometry to study radiated power at early times (compression)
bull Phase Contrast Imaging to study turbulent density fluctuations during compression
PinchLens
Antenna
Waveguide Filter
Local Oscillator
Radiometer Channel
94 GHz
Received
power from
COBRA Ne
gas-puff pinch
Phase Contrast Imaging
s ik k k= +
( )12sin 2s ik k minus=
Probe Beam
Bragg-Scattered radiation
Phase plate
Detector
Lens
Plasma
Working to Understand Gas-Puff
Z-Pinch implosions
Energy partition and turbulence
21
CUI = 200 kA
I = 50 kA
Mag
net
ic f
ield
(T)
WIS
Am
plit
ud
e [m
m]
119861119911 = 0119861119911 = 660 119866119861119911 = 1 119896119866119861119911 = 15 119896119866
Time [ns]
bull MRTI stabilized with weak 119861119911bull Observation of helical
instability modesbull Flux compression in sheathbull Observations suggest full
current flows in pinch
bull lt25 of current in imploding plasma
bull Rotation with shear (119907120579 asymp119907119903 near stagnation)
bull Large fraction of energy and pressure in rotation
Azimuthal rotation profile
Average Instability Amplitude
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
2
Mission of the Multi-University Center
Advance the understanding of current-driven High Energy Density (HED) plasmas
through experiments supported by computer simulations and theoretical modeling
Investigate the application of current driven HED plasmas to inertial fusion energy
intense radiation generation laboratory plasma astrophysics etc
Develop new diagnostics for HED research bring capabilities from international
partners to the US community
Develop advanced numerical algorithms for HED plasma simulation using the extended
MHD (XMHD) models (PERSEUS and GORGON)
Train a new generation of HED research scientists
3
Center Partners
Cornell University Ithaca NY Awarded Cooperative Agreement ndashDrs David Hammer and Bruce Kusse Co-PIs
University of California San Diego - Dr Simon Bott-Suzuki PI
University of Michigan ndash Dr Ryan McBride PI
Princeton University ndash Dr Nathanial Fisch PI
Imperial College London UK ndash Dr Simon Bland PI
Weizmann Institute of Science Rehovot Israel ndash Dr Yitzhak Maron PI
PN Lebedev Institute Moscow Russia ndash Dr Sergei Pikuz PI
4
Lebedev Physical Institute
Most Important Center
Resource is People
Faculty David HammerBruce KusseCharles Seyler
Senior Research AssociatesJohn Greenly Steven Lantz (part time)
Research AssociatesE Sander Lavine
Visiting Senior Scientists (part time)Niansheng QiSergei PikuzTania Shelkovenko
Technical Staff Todd Blanchard Daniel Hawkes William PotterHarry Wilhelm
Administrative Aide Cindy Vanostrand
Graduate Students (2019-rsquo20) Jay AngelJacob Banasek (now at UCSD)Owen ChenAhmed ElshafieyJason Hamilton Thomas HentschelJeffrey Musk JrSophia Rocco
4 Undergraduate this semester Paul BeckJake LawsonHodaya ProppPaco RillorazaAlejandro Mesa Dame
5
Cornell
Faculty Ryan McBrideGraduate Students (2019-rsquo20)
Paul CampbellStephanie MillerAkash ShahJeff Woolstrum
Undergraduate Students (2019-rsquo20)Thomas Mundy
partial funding through center grant or collaboration with center partners
Faculty Simon BlandSergey LebedevJeremy Chittenden
PostdocsfellowsLee SuttleChris WalshEllie Tubman (Livermore)F Suzuki-VidalD Yanuka
Graduate StudentsA BoxallJWD HallidayJ MacDonaldD Russell
Faculty Yitzhak MaronYuri Zarnitsky
Senior staff scientistsEyal Kroupp
Postdoctoral FellowsDimitry MikitchukMarko CvejicTal Queller
Technical staffShimon Shargorodsky
Faculty Simon Bott-SuzukiGraduate Students (2019-rsquo20)
Sam Cordaro
Faculty Sergey PikuzTatiana Shelkovenko
Senior Research ScientistsAleksey AgafonovIvan Tilikin
Techincal StaffSergey Mishin
WIS
Faculty Nathaniel FischSenior Researchers
Vladimir MalkinPostdoc Seth DavidovitsGraduate Students (2019-rsquo20)
Alec GriffithElijah KolmsMikhail MlodikIan Ochs
supported by outside fellowship 6
Graduate Students (cont)N SchwartzJ StruckaS TheocharousJ Yan
Undergrads (2019-rsquo20)Alice ReadEmmanuele PanellaT GheorghiuB KrawczykZ Zhao
Lebedev Physical Institute
Most Important Center
Resource is People
7
Center Contributions
(FY 2019)
bull 19 Peer reviewed publications
bull 10 Conference proceedings
bull 10 Invited Talks
bull 51 Contributed talksposters
Research Topics in the Multi-University Center
bull Fundamental HED plasma physics
bull MagLIF ICF and HED radiation source physics
bull Laboratory Astrophysics
bull HED diagnostic development
bull Advanced computer simulation codes
8
bull Gas-puff z-pinches Characterize energy flow in detail Instability studies and dynamics XMHD effects
bull Shocks ndash collisional vs collisionless radiative vs non-radiative
bull Cylindrical liners Configurations driven by rotating field Anomalous current penetration due to azimuthal asymmetries Understanding inner and outer ablation phenomena
bull Radialconical wire arraysfoils ndash laboratory jets
bull Implodingexploding wire arrays
bull X-pinches
bull Novel configurationsexperiments
bull Power feed plasma flow
Opportunities for Training and
Professional Development
9
bull All (experimental) graduate students and postdocs are expected to design and lead experiments on pulsed power machines operated by center partners
bull Learn aboutmaintainupgrade pulsed power technologies
bull Gain experience with diagnostics and analysis techniques relevant to HED plasmas
bull Collaboration and training with center partners and national labs
bull Access to state-of the-art simulation codes used by center partners
bull Significant undergraduate training opportunities ranging from hands-on experimental work to simulation code development
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
10
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
11
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
Typical pulse shapes (Self-break)
COBRA Cornellrsquos ~1012 W 106 A 100-220 ns rise time 05120512pulsed power machine is used to produce high energy density plasmas
Reached 5000 shots in summer 2018 (now about 5700)
12
Half-machine mode ndash Highly reproducible 750 kA 120 ns rise time
Current
Voltage
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
13
Output Switches
XP ndash lsquosmall machinersquo capable of 250 kA 50 ns or 350 kA 150 ns
Primarily used for x-pinch studies
Fast pulse
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Marx Generator Systems at
Center Partners
14
MAGPIE ndash Imperial College 14 MA ~1012 W 250 ns rise time
Some Center Partners have LTDs
(Linear Transformer Drivers)
15
(a)
(b)
3-m-diameter MAIZE LTD (UM) (a) cutaway drawing (b) open-top system photo has 40 bricks in parallel in one stage Each brick has a switch (1) between two capacitors (2) iron cores (3) high voltage insulators (4) coaxial (5) and radial (6) transmission lines delivering current to conical power feed (7) and the vacuum load region (8)
Basic LTD circuit High-120641 ferromagnetic core increases inductance of undesiredparasitic surface current path
Build pulsed-power machine with ldquobricksrdquo in parallel (series) for more current (voltage)
Highly Capable Diagnostic Suites
Characterize Major Center Facilities
16
Pre-ionizer
PCDs
119861119911 field coils
Filtered X-raypinholes
X-ray pinholecamera
Diagnostic Laser(Mach ZehnderLaser ShearingInterferometryshadowgraphy)
10 J laser(Thomson Scattering)
XUV Quad Cams
Fibers
Fibers
12-frame
(a) (b)
(c)
(a) High-speed 12 frame camera (VisibleUV upgrade)(b) 10 J 3 ns 527 nm Laser for Thomson Scattering(c) Visible spectroscopy streak photography and PLIF
system
Examples shown at CU
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research Highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
17
Working to Understand Gas-Puff
Z-Pinch implosions
18
Neutral gas injection
Interaction of axial current and induced azimuthal field drives radial implosion
119869119911119861120579
StagnationThermalizationRadiation
Working to Understand Gas-Puff
Z-Pinch implosions
19
Energy partition and turbulence
Sophia Rocco(CU ndash HEDP 3)
WIS ndash Spectroscopic measurements suggest 119879119894 dominated by nonthermal
hydrodynamic KE near stagnation (119879119894119890119891119891
gt 119879119894)
Princeton ndash Sudden viscous dissipation mechanism can rapidly convert turbulent KE into thermal energy
Cornell ndash Identify origin of the difference between 119879119894 and 119879119894119890119891119891
using Thomson
scattering
Variable 119879119894119879119894 = 119879119890+Gaussian Velocity dist
20
bull MicrowaveIR Radiometry to study radiated power at early times (compression)
bull Phase Contrast Imaging to study turbulent density fluctuations during compression
PinchLens
Antenna
Waveguide Filter
Local Oscillator
Radiometer Channel
94 GHz
Received
power from
COBRA Ne
gas-puff pinch
Phase Contrast Imaging
s ik k k= +
( )12sin 2s ik k minus=
Probe Beam
Bragg-Scattered radiation
Phase plate
Detector
Lens
Plasma
Working to Understand Gas-Puff
Z-Pinch implosions
Energy partition and turbulence
21
CUI = 200 kA
I = 50 kA
Mag
net
ic f
ield
(T)
WIS
Am
plit
ud
e [m
m]
119861119911 = 0119861119911 = 660 119866119861119911 = 1 119896119866119861119911 = 15 119896119866
Time [ns]
bull MRTI stabilized with weak 119861119911bull Observation of helical
instability modesbull Flux compression in sheathbull Observations suggest full
current flows in pinch
bull lt25 of current in imploding plasma
bull Rotation with shear (119907120579 asymp119907119903 near stagnation)
bull Large fraction of energy and pressure in rotation
Azimuthal rotation profile
Average Instability Amplitude
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Mission of the Multi-University Center
Advance the understanding of current-driven High Energy Density (HED) plasmas
through experiments supported by computer simulations and theoretical modeling
Investigate the application of current driven HED plasmas to inertial fusion energy
intense radiation generation laboratory plasma astrophysics etc
Develop new diagnostics for HED research bring capabilities from international
partners to the US community
Develop advanced numerical algorithms for HED plasma simulation using the extended
MHD (XMHD) models (PERSEUS and GORGON)
Train a new generation of HED research scientists
3
Center Partners
Cornell University Ithaca NY Awarded Cooperative Agreement ndashDrs David Hammer and Bruce Kusse Co-PIs
University of California San Diego - Dr Simon Bott-Suzuki PI
University of Michigan ndash Dr Ryan McBride PI
Princeton University ndash Dr Nathanial Fisch PI
Imperial College London UK ndash Dr Simon Bland PI
Weizmann Institute of Science Rehovot Israel ndash Dr Yitzhak Maron PI
PN Lebedev Institute Moscow Russia ndash Dr Sergei Pikuz PI
4
Lebedev Physical Institute
Most Important Center
Resource is People
Faculty David HammerBruce KusseCharles Seyler
Senior Research AssociatesJohn Greenly Steven Lantz (part time)
Research AssociatesE Sander Lavine
Visiting Senior Scientists (part time)Niansheng QiSergei PikuzTania Shelkovenko
Technical Staff Todd Blanchard Daniel Hawkes William PotterHarry Wilhelm
Administrative Aide Cindy Vanostrand
Graduate Students (2019-rsquo20) Jay AngelJacob Banasek (now at UCSD)Owen ChenAhmed ElshafieyJason Hamilton Thomas HentschelJeffrey Musk JrSophia Rocco
4 Undergraduate this semester Paul BeckJake LawsonHodaya ProppPaco RillorazaAlejandro Mesa Dame
5
Cornell
Faculty Ryan McBrideGraduate Students (2019-rsquo20)
Paul CampbellStephanie MillerAkash ShahJeff Woolstrum
Undergraduate Students (2019-rsquo20)Thomas Mundy
partial funding through center grant or collaboration with center partners
Faculty Simon BlandSergey LebedevJeremy Chittenden
PostdocsfellowsLee SuttleChris WalshEllie Tubman (Livermore)F Suzuki-VidalD Yanuka
Graduate StudentsA BoxallJWD HallidayJ MacDonaldD Russell
Faculty Yitzhak MaronYuri Zarnitsky
Senior staff scientistsEyal Kroupp
Postdoctoral FellowsDimitry MikitchukMarko CvejicTal Queller
Technical staffShimon Shargorodsky
Faculty Simon Bott-SuzukiGraduate Students (2019-rsquo20)
Sam Cordaro
Faculty Sergey PikuzTatiana Shelkovenko
Senior Research ScientistsAleksey AgafonovIvan Tilikin
Techincal StaffSergey Mishin
WIS
Faculty Nathaniel FischSenior Researchers
Vladimir MalkinPostdoc Seth DavidovitsGraduate Students (2019-rsquo20)
Alec GriffithElijah KolmsMikhail MlodikIan Ochs
supported by outside fellowship 6
Graduate Students (cont)N SchwartzJ StruckaS TheocharousJ Yan
Undergrads (2019-rsquo20)Alice ReadEmmanuele PanellaT GheorghiuB KrawczykZ Zhao
Lebedev Physical Institute
Most Important Center
Resource is People
7
Center Contributions
(FY 2019)
bull 19 Peer reviewed publications
bull 10 Conference proceedings
bull 10 Invited Talks
bull 51 Contributed talksposters
Research Topics in the Multi-University Center
bull Fundamental HED plasma physics
bull MagLIF ICF and HED radiation source physics
bull Laboratory Astrophysics
bull HED diagnostic development
bull Advanced computer simulation codes
8
bull Gas-puff z-pinches Characterize energy flow in detail Instability studies and dynamics XMHD effects
bull Shocks ndash collisional vs collisionless radiative vs non-radiative
bull Cylindrical liners Configurations driven by rotating field Anomalous current penetration due to azimuthal asymmetries Understanding inner and outer ablation phenomena
bull Radialconical wire arraysfoils ndash laboratory jets
bull Implodingexploding wire arrays
bull X-pinches
bull Novel configurationsexperiments
bull Power feed plasma flow
Opportunities for Training and
Professional Development
9
bull All (experimental) graduate students and postdocs are expected to design and lead experiments on pulsed power machines operated by center partners
bull Learn aboutmaintainupgrade pulsed power technologies
bull Gain experience with diagnostics and analysis techniques relevant to HED plasmas
bull Collaboration and training with center partners and national labs
bull Access to state-of the-art simulation codes used by center partners
bull Significant undergraduate training opportunities ranging from hands-on experimental work to simulation code development
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
10
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
11
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
Typical pulse shapes (Self-break)
COBRA Cornellrsquos ~1012 W 106 A 100-220 ns rise time 05120512pulsed power machine is used to produce high energy density plasmas
Reached 5000 shots in summer 2018 (now about 5700)
12
Half-machine mode ndash Highly reproducible 750 kA 120 ns rise time
Current
Voltage
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
13
Output Switches
XP ndash lsquosmall machinersquo capable of 250 kA 50 ns or 350 kA 150 ns
Primarily used for x-pinch studies
Fast pulse
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Marx Generator Systems at
Center Partners
14
MAGPIE ndash Imperial College 14 MA ~1012 W 250 ns rise time
Some Center Partners have LTDs
(Linear Transformer Drivers)
15
(a)
(b)
3-m-diameter MAIZE LTD (UM) (a) cutaway drawing (b) open-top system photo has 40 bricks in parallel in one stage Each brick has a switch (1) between two capacitors (2) iron cores (3) high voltage insulators (4) coaxial (5) and radial (6) transmission lines delivering current to conical power feed (7) and the vacuum load region (8)
Basic LTD circuit High-120641 ferromagnetic core increases inductance of undesiredparasitic surface current path
Build pulsed-power machine with ldquobricksrdquo in parallel (series) for more current (voltage)
Highly Capable Diagnostic Suites
Characterize Major Center Facilities
16
Pre-ionizer
PCDs
119861119911 field coils
Filtered X-raypinholes
X-ray pinholecamera
Diagnostic Laser(Mach ZehnderLaser ShearingInterferometryshadowgraphy)
10 J laser(Thomson Scattering)
XUV Quad Cams
Fibers
Fibers
12-frame
(a) (b)
(c)
(a) High-speed 12 frame camera (VisibleUV upgrade)(b) 10 J 3 ns 527 nm Laser for Thomson Scattering(c) Visible spectroscopy streak photography and PLIF
system
Examples shown at CU
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research Highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
17
Working to Understand Gas-Puff
Z-Pinch implosions
18
Neutral gas injection
Interaction of axial current and induced azimuthal field drives radial implosion
119869119911119861120579
StagnationThermalizationRadiation
Working to Understand Gas-Puff
Z-Pinch implosions
19
Energy partition and turbulence
Sophia Rocco(CU ndash HEDP 3)
WIS ndash Spectroscopic measurements suggest 119879119894 dominated by nonthermal
hydrodynamic KE near stagnation (119879119894119890119891119891
gt 119879119894)
Princeton ndash Sudden viscous dissipation mechanism can rapidly convert turbulent KE into thermal energy
Cornell ndash Identify origin of the difference between 119879119894 and 119879119894119890119891119891
using Thomson
scattering
Variable 119879119894119879119894 = 119879119890+Gaussian Velocity dist
20
bull MicrowaveIR Radiometry to study radiated power at early times (compression)
bull Phase Contrast Imaging to study turbulent density fluctuations during compression
PinchLens
Antenna
Waveguide Filter
Local Oscillator
Radiometer Channel
94 GHz
Received
power from
COBRA Ne
gas-puff pinch
Phase Contrast Imaging
s ik k k= +
( )12sin 2s ik k minus=
Probe Beam
Bragg-Scattered radiation
Phase plate
Detector
Lens
Plasma
Working to Understand Gas-Puff
Z-Pinch implosions
Energy partition and turbulence
21
CUI = 200 kA
I = 50 kA
Mag
net
ic f
ield
(T)
WIS
Am
plit
ud
e [m
m]
119861119911 = 0119861119911 = 660 119866119861119911 = 1 119896119866119861119911 = 15 119896119866
Time [ns]
bull MRTI stabilized with weak 119861119911bull Observation of helical
instability modesbull Flux compression in sheathbull Observations suggest full
current flows in pinch
bull lt25 of current in imploding plasma
bull Rotation with shear (119907120579 asymp119907119903 near stagnation)
bull Large fraction of energy and pressure in rotation
Azimuthal rotation profile
Average Instability Amplitude
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Center Partners
Cornell University Ithaca NY Awarded Cooperative Agreement ndashDrs David Hammer and Bruce Kusse Co-PIs
University of California San Diego - Dr Simon Bott-Suzuki PI
University of Michigan ndash Dr Ryan McBride PI
Princeton University ndash Dr Nathanial Fisch PI
Imperial College London UK ndash Dr Simon Bland PI
Weizmann Institute of Science Rehovot Israel ndash Dr Yitzhak Maron PI
PN Lebedev Institute Moscow Russia ndash Dr Sergei Pikuz PI
4
Lebedev Physical Institute
Most Important Center
Resource is People
Faculty David HammerBruce KusseCharles Seyler
Senior Research AssociatesJohn Greenly Steven Lantz (part time)
Research AssociatesE Sander Lavine
Visiting Senior Scientists (part time)Niansheng QiSergei PikuzTania Shelkovenko
Technical Staff Todd Blanchard Daniel Hawkes William PotterHarry Wilhelm
Administrative Aide Cindy Vanostrand
Graduate Students (2019-rsquo20) Jay AngelJacob Banasek (now at UCSD)Owen ChenAhmed ElshafieyJason Hamilton Thomas HentschelJeffrey Musk JrSophia Rocco
4 Undergraduate this semester Paul BeckJake LawsonHodaya ProppPaco RillorazaAlejandro Mesa Dame
5
Cornell
Faculty Ryan McBrideGraduate Students (2019-rsquo20)
Paul CampbellStephanie MillerAkash ShahJeff Woolstrum
Undergraduate Students (2019-rsquo20)Thomas Mundy
partial funding through center grant or collaboration with center partners
Faculty Simon BlandSergey LebedevJeremy Chittenden
PostdocsfellowsLee SuttleChris WalshEllie Tubman (Livermore)F Suzuki-VidalD Yanuka
Graduate StudentsA BoxallJWD HallidayJ MacDonaldD Russell
Faculty Yitzhak MaronYuri Zarnitsky
Senior staff scientistsEyal Kroupp
Postdoctoral FellowsDimitry MikitchukMarko CvejicTal Queller
Technical staffShimon Shargorodsky
Faculty Simon Bott-SuzukiGraduate Students (2019-rsquo20)
Sam Cordaro
Faculty Sergey PikuzTatiana Shelkovenko
Senior Research ScientistsAleksey AgafonovIvan Tilikin
Techincal StaffSergey Mishin
WIS
Faculty Nathaniel FischSenior Researchers
Vladimir MalkinPostdoc Seth DavidovitsGraduate Students (2019-rsquo20)
Alec GriffithElijah KolmsMikhail MlodikIan Ochs
supported by outside fellowship 6
Graduate Students (cont)N SchwartzJ StruckaS TheocharousJ Yan
Undergrads (2019-rsquo20)Alice ReadEmmanuele PanellaT GheorghiuB KrawczykZ Zhao
Lebedev Physical Institute
Most Important Center
Resource is People
7
Center Contributions
(FY 2019)
bull 19 Peer reviewed publications
bull 10 Conference proceedings
bull 10 Invited Talks
bull 51 Contributed talksposters
Research Topics in the Multi-University Center
bull Fundamental HED plasma physics
bull MagLIF ICF and HED radiation source physics
bull Laboratory Astrophysics
bull HED diagnostic development
bull Advanced computer simulation codes
8
bull Gas-puff z-pinches Characterize energy flow in detail Instability studies and dynamics XMHD effects
bull Shocks ndash collisional vs collisionless radiative vs non-radiative
bull Cylindrical liners Configurations driven by rotating field Anomalous current penetration due to azimuthal asymmetries Understanding inner and outer ablation phenomena
bull Radialconical wire arraysfoils ndash laboratory jets
bull Implodingexploding wire arrays
bull X-pinches
bull Novel configurationsexperiments
bull Power feed plasma flow
Opportunities for Training and
Professional Development
9
bull All (experimental) graduate students and postdocs are expected to design and lead experiments on pulsed power machines operated by center partners
bull Learn aboutmaintainupgrade pulsed power technologies
bull Gain experience with diagnostics and analysis techniques relevant to HED plasmas
bull Collaboration and training with center partners and national labs
bull Access to state-of the-art simulation codes used by center partners
bull Significant undergraduate training opportunities ranging from hands-on experimental work to simulation code development
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
10
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
11
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
Typical pulse shapes (Self-break)
COBRA Cornellrsquos ~1012 W 106 A 100-220 ns rise time 05120512pulsed power machine is used to produce high energy density plasmas
Reached 5000 shots in summer 2018 (now about 5700)
12
Half-machine mode ndash Highly reproducible 750 kA 120 ns rise time
Current
Voltage
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
13
Output Switches
XP ndash lsquosmall machinersquo capable of 250 kA 50 ns or 350 kA 150 ns
Primarily used for x-pinch studies
Fast pulse
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Marx Generator Systems at
Center Partners
14
MAGPIE ndash Imperial College 14 MA ~1012 W 250 ns rise time
Some Center Partners have LTDs
(Linear Transformer Drivers)
15
(a)
(b)
3-m-diameter MAIZE LTD (UM) (a) cutaway drawing (b) open-top system photo has 40 bricks in parallel in one stage Each brick has a switch (1) between two capacitors (2) iron cores (3) high voltage insulators (4) coaxial (5) and radial (6) transmission lines delivering current to conical power feed (7) and the vacuum load region (8)
Basic LTD circuit High-120641 ferromagnetic core increases inductance of undesiredparasitic surface current path
Build pulsed-power machine with ldquobricksrdquo in parallel (series) for more current (voltage)
Highly Capable Diagnostic Suites
Characterize Major Center Facilities
16
Pre-ionizer
PCDs
119861119911 field coils
Filtered X-raypinholes
X-ray pinholecamera
Diagnostic Laser(Mach ZehnderLaser ShearingInterferometryshadowgraphy)
10 J laser(Thomson Scattering)
XUV Quad Cams
Fibers
Fibers
12-frame
(a) (b)
(c)
(a) High-speed 12 frame camera (VisibleUV upgrade)(b) 10 J 3 ns 527 nm Laser for Thomson Scattering(c) Visible spectroscopy streak photography and PLIF
system
Examples shown at CU
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research Highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
17
Working to Understand Gas-Puff
Z-Pinch implosions
18
Neutral gas injection
Interaction of axial current and induced azimuthal field drives radial implosion
119869119911119861120579
StagnationThermalizationRadiation
Working to Understand Gas-Puff
Z-Pinch implosions
19
Energy partition and turbulence
Sophia Rocco(CU ndash HEDP 3)
WIS ndash Spectroscopic measurements suggest 119879119894 dominated by nonthermal
hydrodynamic KE near stagnation (119879119894119890119891119891
gt 119879119894)
Princeton ndash Sudden viscous dissipation mechanism can rapidly convert turbulent KE into thermal energy
Cornell ndash Identify origin of the difference between 119879119894 and 119879119894119890119891119891
using Thomson
scattering
Variable 119879119894119879119894 = 119879119890+Gaussian Velocity dist
20
bull MicrowaveIR Radiometry to study radiated power at early times (compression)
bull Phase Contrast Imaging to study turbulent density fluctuations during compression
PinchLens
Antenna
Waveguide Filter
Local Oscillator
Radiometer Channel
94 GHz
Received
power from
COBRA Ne
gas-puff pinch
Phase Contrast Imaging
s ik k k= +
( )12sin 2s ik k minus=
Probe Beam
Bragg-Scattered radiation
Phase plate
Detector
Lens
Plasma
Working to Understand Gas-Puff
Z-Pinch implosions
Energy partition and turbulence
21
CUI = 200 kA
I = 50 kA
Mag
net
ic f
ield
(T)
WIS
Am
plit
ud
e [m
m]
119861119911 = 0119861119911 = 660 119866119861119911 = 1 119896119866119861119911 = 15 119896119866
Time [ns]
bull MRTI stabilized with weak 119861119911bull Observation of helical
instability modesbull Flux compression in sheathbull Observations suggest full
current flows in pinch
bull lt25 of current in imploding plasma
bull Rotation with shear (119907120579 asymp119907119903 near stagnation)
bull Large fraction of energy and pressure in rotation
Azimuthal rotation profile
Average Instability Amplitude
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Most Important Center
Resource is People
Faculty David HammerBruce KusseCharles Seyler
Senior Research AssociatesJohn Greenly Steven Lantz (part time)
Research AssociatesE Sander Lavine
Visiting Senior Scientists (part time)Niansheng QiSergei PikuzTania Shelkovenko
Technical Staff Todd Blanchard Daniel Hawkes William PotterHarry Wilhelm
Administrative Aide Cindy Vanostrand
Graduate Students (2019-rsquo20) Jay AngelJacob Banasek (now at UCSD)Owen ChenAhmed ElshafieyJason Hamilton Thomas HentschelJeffrey Musk JrSophia Rocco
4 Undergraduate this semester Paul BeckJake LawsonHodaya ProppPaco RillorazaAlejandro Mesa Dame
5
Cornell
Faculty Ryan McBrideGraduate Students (2019-rsquo20)
Paul CampbellStephanie MillerAkash ShahJeff Woolstrum
Undergraduate Students (2019-rsquo20)Thomas Mundy
partial funding through center grant or collaboration with center partners
Faculty Simon BlandSergey LebedevJeremy Chittenden
PostdocsfellowsLee SuttleChris WalshEllie Tubman (Livermore)F Suzuki-VidalD Yanuka
Graduate StudentsA BoxallJWD HallidayJ MacDonaldD Russell
Faculty Yitzhak MaronYuri Zarnitsky
Senior staff scientistsEyal Kroupp
Postdoctoral FellowsDimitry MikitchukMarko CvejicTal Queller
Technical staffShimon Shargorodsky
Faculty Simon Bott-SuzukiGraduate Students (2019-rsquo20)
Sam Cordaro
Faculty Sergey PikuzTatiana Shelkovenko
Senior Research ScientistsAleksey AgafonovIvan Tilikin
Techincal StaffSergey Mishin
WIS
Faculty Nathaniel FischSenior Researchers
Vladimir MalkinPostdoc Seth DavidovitsGraduate Students (2019-rsquo20)
Alec GriffithElijah KolmsMikhail MlodikIan Ochs
supported by outside fellowship 6
Graduate Students (cont)N SchwartzJ StruckaS TheocharousJ Yan
Undergrads (2019-rsquo20)Alice ReadEmmanuele PanellaT GheorghiuB KrawczykZ Zhao
Lebedev Physical Institute
Most Important Center
Resource is People
7
Center Contributions
(FY 2019)
bull 19 Peer reviewed publications
bull 10 Conference proceedings
bull 10 Invited Talks
bull 51 Contributed talksposters
Research Topics in the Multi-University Center
bull Fundamental HED plasma physics
bull MagLIF ICF and HED radiation source physics
bull Laboratory Astrophysics
bull HED diagnostic development
bull Advanced computer simulation codes
8
bull Gas-puff z-pinches Characterize energy flow in detail Instability studies and dynamics XMHD effects
bull Shocks ndash collisional vs collisionless radiative vs non-radiative
bull Cylindrical liners Configurations driven by rotating field Anomalous current penetration due to azimuthal asymmetries Understanding inner and outer ablation phenomena
bull Radialconical wire arraysfoils ndash laboratory jets
bull Implodingexploding wire arrays
bull X-pinches
bull Novel configurationsexperiments
bull Power feed plasma flow
Opportunities for Training and
Professional Development
9
bull All (experimental) graduate students and postdocs are expected to design and lead experiments on pulsed power machines operated by center partners
bull Learn aboutmaintainupgrade pulsed power technologies
bull Gain experience with diagnostics and analysis techniques relevant to HED plasmas
bull Collaboration and training with center partners and national labs
bull Access to state-of the-art simulation codes used by center partners
bull Significant undergraduate training opportunities ranging from hands-on experimental work to simulation code development
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
10
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
11
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
Typical pulse shapes (Self-break)
COBRA Cornellrsquos ~1012 W 106 A 100-220 ns rise time 05120512pulsed power machine is used to produce high energy density plasmas
Reached 5000 shots in summer 2018 (now about 5700)
12
Half-machine mode ndash Highly reproducible 750 kA 120 ns rise time
Current
Voltage
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
13
Output Switches
XP ndash lsquosmall machinersquo capable of 250 kA 50 ns or 350 kA 150 ns
Primarily used for x-pinch studies
Fast pulse
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Marx Generator Systems at
Center Partners
14
MAGPIE ndash Imperial College 14 MA ~1012 W 250 ns rise time
Some Center Partners have LTDs
(Linear Transformer Drivers)
15
(a)
(b)
3-m-diameter MAIZE LTD (UM) (a) cutaway drawing (b) open-top system photo has 40 bricks in parallel in one stage Each brick has a switch (1) between two capacitors (2) iron cores (3) high voltage insulators (4) coaxial (5) and radial (6) transmission lines delivering current to conical power feed (7) and the vacuum load region (8)
Basic LTD circuit High-120641 ferromagnetic core increases inductance of undesiredparasitic surface current path
Build pulsed-power machine with ldquobricksrdquo in parallel (series) for more current (voltage)
Highly Capable Diagnostic Suites
Characterize Major Center Facilities
16
Pre-ionizer
PCDs
119861119911 field coils
Filtered X-raypinholes
X-ray pinholecamera
Diagnostic Laser(Mach ZehnderLaser ShearingInterferometryshadowgraphy)
10 J laser(Thomson Scattering)
XUV Quad Cams
Fibers
Fibers
12-frame
(a) (b)
(c)
(a) High-speed 12 frame camera (VisibleUV upgrade)(b) 10 J 3 ns 527 nm Laser for Thomson Scattering(c) Visible spectroscopy streak photography and PLIF
system
Examples shown at CU
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research Highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
17
Working to Understand Gas-Puff
Z-Pinch implosions
18
Neutral gas injection
Interaction of axial current and induced azimuthal field drives radial implosion
119869119911119861120579
StagnationThermalizationRadiation
Working to Understand Gas-Puff
Z-Pinch implosions
19
Energy partition and turbulence
Sophia Rocco(CU ndash HEDP 3)
WIS ndash Spectroscopic measurements suggest 119879119894 dominated by nonthermal
hydrodynamic KE near stagnation (119879119894119890119891119891
gt 119879119894)
Princeton ndash Sudden viscous dissipation mechanism can rapidly convert turbulent KE into thermal energy
Cornell ndash Identify origin of the difference between 119879119894 and 119879119894119890119891119891
using Thomson
scattering
Variable 119879119894119879119894 = 119879119890+Gaussian Velocity dist
20
bull MicrowaveIR Radiometry to study radiated power at early times (compression)
bull Phase Contrast Imaging to study turbulent density fluctuations during compression
PinchLens
Antenna
Waveguide Filter
Local Oscillator
Radiometer Channel
94 GHz
Received
power from
COBRA Ne
gas-puff pinch
Phase Contrast Imaging
s ik k k= +
( )12sin 2s ik k minus=
Probe Beam
Bragg-Scattered radiation
Phase plate
Detector
Lens
Plasma
Working to Understand Gas-Puff
Z-Pinch implosions
Energy partition and turbulence
21
CUI = 200 kA
I = 50 kA
Mag
net
ic f
ield
(T)
WIS
Am
plit
ud
e [m
m]
119861119911 = 0119861119911 = 660 119866119861119911 = 1 119896119866119861119911 = 15 119896119866
Time [ns]
bull MRTI stabilized with weak 119861119911bull Observation of helical
instability modesbull Flux compression in sheathbull Observations suggest full
current flows in pinch
bull lt25 of current in imploding plasma
bull Rotation with shear (119907120579 asymp119907119903 near stagnation)
bull Large fraction of energy and pressure in rotation
Azimuthal rotation profile
Average Instability Amplitude
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Faculty Ryan McBrideGraduate Students (2019-rsquo20)
Paul CampbellStephanie MillerAkash ShahJeff Woolstrum
Undergraduate Students (2019-rsquo20)Thomas Mundy
partial funding through center grant or collaboration with center partners
Faculty Simon BlandSergey LebedevJeremy Chittenden
PostdocsfellowsLee SuttleChris WalshEllie Tubman (Livermore)F Suzuki-VidalD Yanuka
Graduate StudentsA BoxallJWD HallidayJ MacDonaldD Russell
Faculty Yitzhak MaronYuri Zarnitsky
Senior staff scientistsEyal Kroupp
Postdoctoral FellowsDimitry MikitchukMarko CvejicTal Queller
Technical staffShimon Shargorodsky
Faculty Simon Bott-SuzukiGraduate Students (2019-rsquo20)
Sam Cordaro
Faculty Sergey PikuzTatiana Shelkovenko
Senior Research ScientistsAleksey AgafonovIvan Tilikin
Techincal StaffSergey Mishin
WIS
Faculty Nathaniel FischSenior Researchers
Vladimir MalkinPostdoc Seth DavidovitsGraduate Students (2019-rsquo20)
Alec GriffithElijah KolmsMikhail MlodikIan Ochs
supported by outside fellowship 6
Graduate Students (cont)N SchwartzJ StruckaS TheocharousJ Yan
Undergrads (2019-rsquo20)Alice ReadEmmanuele PanellaT GheorghiuB KrawczykZ Zhao
Lebedev Physical Institute
Most Important Center
Resource is People
7
Center Contributions
(FY 2019)
bull 19 Peer reviewed publications
bull 10 Conference proceedings
bull 10 Invited Talks
bull 51 Contributed talksposters
Research Topics in the Multi-University Center
bull Fundamental HED plasma physics
bull MagLIF ICF and HED radiation source physics
bull Laboratory Astrophysics
bull HED diagnostic development
bull Advanced computer simulation codes
8
bull Gas-puff z-pinches Characterize energy flow in detail Instability studies and dynamics XMHD effects
bull Shocks ndash collisional vs collisionless radiative vs non-radiative
bull Cylindrical liners Configurations driven by rotating field Anomalous current penetration due to azimuthal asymmetries Understanding inner and outer ablation phenomena
bull Radialconical wire arraysfoils ndash laboratory jets
bull Implodingexploding wire arrays
bull X-pinches
bull Novel configurationsexperiments
bull Power feed plasma flow
Opportunities for Training and
Professional Development
9
bull All (experimental) graduate students and postdocs are expected to design and lead experiments on pulsed power machines operated by center partners
bull Learn aboutmaintainupgrade pulsed power technologies
bull Gain experience with diagnostics and analysis techniques relevant to HED plasmas
bull Collaboration and training with center partners and national labs
bull Access to state-of the-art simulation codes used by center partners
bull Significant undergraduate training opportunities ranging from hands-on experimental work to simulation code development
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
10
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
11
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
Typical pulse shapes (Self-break)
COBRA Cornellrsquos ~1012 W 106 A 100-220 ns rise time 05120512pulsed power machine is used to produce high energy density plasmas
Reached 5000 shots in summer 2018 (now about 5700)
12
Half-machine mode ndash Highly reproducible 750 kA 120 ns rise time
Current
Voltage
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
13
Output Switches
XP ndash lsquosmall machinersquo capable of 250 kA 50 ns or 350 kA 150 ns
Primarily used for x-pinch studies
Fast pulse
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Marx Generator Systems at
Center Partners
14
MAGPIE ndash Imperial College 14 MA ~1012 W 250 ns rise time
Some Center Partners have LTDs
(Linear Transformer Drivers)
15
(a)
(b)
3-m-diameter MAIZE LTD (UM) (a) cutaway drawing (b) open-top system photo has 40 bricks in parallel in one stage Each brick has a switch (1) between two capacitors (2) iron cores (3) high voltage insulators (4) coaxial (5) and radial (6) transmission lines delivering current to conical power feed (7) and the vacuum load region (8)
Basic LTD circuit High-120641 ferromagnetic core increases inductance of undesiredparasitic surface current path
Build pulsed-power machine with ldquobricksrdquo in parallel (series) for more current (voltage)
Highly Capable Diagnostic Suites
Characterize Major Center Facilities
16
Pre-ionizer
PCDs
119861119911 field coils
Filtered X-raypinholes
X-ray pinholecamera
Diagnostic Laser(Mach ZehnderLaser ShearingInterferometryshadowgraphy)
10 J laser(Thomson Scattering)
XUV Quad Cams
Fibers
Fibers
12-frame
(a) (b)
(c)
(a) High-speed 12 frame camera (VisibleUV upgrade)(b) 10 J 3 ns 527 nm Laser for Thomson Scattering(c) Visible spectroscopy streak photography and PLIF
system
Examples shown at CU
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research Highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
17
Working to Understand Gas-Puff
Z-Pinch implosions
18
Neutral gas injection
Interaction of axial current and induced azimuthal field drives radial implosion
119869119911119861120579
StagnationThermalizationRadiation
Working to Understand Gas-Puff
Z-Pinch implosions
19
Energy partition and turbulence
Sophia Rocco(CU ndash HEDP 3)
WIS ndash Spectroscopic measurements suggest 119879119894 dominated by nonthermal
hydrodynamic KE near stagnation (119879119894119890119891119891
gt 119879119894)
Princeton ndash Sudden viscous dissipation mechanism can rapidly convert turbulent KE into thermal energy
Cornell ndash Identify origin of the difference between 119879119894 and 119879119894119890119891119891
using Thomson
scattering
Variable 119879119894119879119894 = 119879119890+Gaussian Velocity dist
20
bull MicrowaveIR Radiometry to study radiated power at early times (compression)
bull Phase Contrast Imaging to study turbulent density fluctuations during compression
PinchLens
Antenna
Waveguide Filter
Local Oscillator
Radiometer Channel
94 GHz
Received
power from
COBRA Ne
gas-puff pinch
Phase Contrast Imaging
s ik k k= +
( )12sin 2s ik k minus=
Probe Beam
Bragg-Scattered radiation
Phase plate
Detector
Lens
Plasma
Working to Understand Gas-Puff
Z-Pinch implosions
Energy partition and turbulence
21
CUI = 200 kA
I = 50 kA
Mag
net
ic f
ield
(T)
WIS
Am
plit
ud
e [m
m]
119861119911 = 0119861119911 = 660 119866119861119911 = 1 119896119866119861119911 = 15 119896119866
Time [ns]
bull MRTI stabilized with weak 119861119911bull Observation of helical
instability modesbull Flux compression in sheathbull Observations suggest full
current flows in pinch
bull lt25 of current in imploding plasma
bull Rotation with shear (119907120579 asymp119907119903 near stagnation)
bull Large fraction of energy and pressure in rotation
Azimuthal rotation profile
Average Instability Amplitude
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
7
Center Contributions
(FY 2019)
bull 19 Peer reviewed publications
bull 10 Conference proceedings
bull 10 Invited Talks
bull 51 Contributed talksposters
Research Topics in the Multi-University Center
bull Fundamental HED plasma physics
bull MagLIF ICF and HED radiation source physics
bull Laboratory Astrophysics
bull HED diagnostic development
bull Advanced computer simulation codes
8
bull Gas-puff z-pinches Characterize energy flow in detail Instability studies and dynamics XMHD effects
bull Shocks ndash collisional vs collisionless radiative vs non-radiative
bull Cylindrical liners Configurations driven by rotating field Anomalous current penetration due to azimuthal asymmetries Understanding inner and outer ablation phenomena
bull Radialconical wire arraysfoils ndash laboratory jets
bull Implodingexploding wire arrays
bull X-pinches
bull Novel configurationsexperiments
bull Power feed plasma flow
Opportunities for Training and
Professional Development
9
bull All (experimental) graduate students and postdocs are expected to design and lead experiments on pulsed power machines operated by center partners
bull Learn aboutmaintainupgrade pulsed power technologies
bull Gain experience with diagnostics and analysis techniques relevant to HED plasmas
bull Collaboration and training with center partners and national labs
bull Access to state-of the-art simulation codes used by center partners
bull Significant undergraduate training opportunities ranging from hands-on experimental work to simulation code development
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
10
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
11
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
Typical pulse shapes (Self-break)
COBRA Cornellrsquos ~1012 W 106 A 100-220 ns rise time 05120512pulsed power machine is used to produce high energy density plasmas
Reached 5000 shots in summer 2018 (now about 5700)
12
Half-machine mode ndash Highly reproducible 750 kA 120 ns rise time
Current
Voltage
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
13
Output Switches
XP ndash lsquosmall machinersquo capable of 250 kA 50 ns or 350 kA 150 ns
Primarily used for x-pinch studies
Fast pulse
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Marx Generator Systems at
Center Partners
14
MAGPIE ndash Imperial College 14 MA ~1012 W 250 ns rise time
Some Center Partners have LTDs
(Linear Transformer Drivers)
15
(a)
(b)
3-m-diameter MAIZE LTD (UM) (a) cutaway drawing (b) open-top system photo has 40 bricks in parallel in one stage Each brick has a switch (1) between two capacitors (2) iron cores (3) high voltage insulators (4) coaxial (5) and radial (6) transmission lines delivering current to conical power feed (7) and the vacuum load region (8)
Basic LTD circuit High-120641 ferromagnetic core increases inductance of undesiredparasitic surface current path
Build pulsed-power machine with ldquobricksrdquo in parallel (series) for more current (voltage)
Highly Capable Diagnostic Suites
Characterize Major Center Facilities
16
Pre-ionizer
PCDs
119861119911 field coils
Filtered X-raypinholes
X-ray pinholecamera
Diagnostic Laser(Mach ZehnderLaser ShearingInterferometryshadowgraphy)
10 J laser(Thomson Scattering)
XUV Quad Cams
Fibers
Fibers
12-frame
(a) (b)
(c)
(a) High-speed 12 frame camera (VisibleUV upgrade)(b) 10 J 3 ns 527 nm Laser for Thomson Scattering(c) Visible spectroscopy streak photography and PLIF
system
Examples shown at CU
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research Highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
17
Working to Understand Gas-Puff
Z-Pinch implosions
18
Neutral gas injection
Interaction of axial current and induced azimuthal field drives radial implosion
119869119911119861120579
StagnationThermalizationRadiation
Working to Understand Gas-Puff
Z-Pinch implosions
19
Energy partition and turbulence
Sophia Rocco(CU ndash HEDP 3)
WIS ndash Spectroscopic measurements suggest 119879119894 dominated by nonthermal
hydrodynamic KE near stagnation (119879119894119890119891119891
gt 119879119894)
Princeton ndash Sudden viscous dissipation mechanism can rapidly convert turbulent KE into thermal energy
Cornell ndash Identify origin of the difference between 119879119894 and 119879119894119890119891119891
using Thomson
scattering
Variable 119879119894119879119894 = 119879119890+Gaussian Velocity dist
20
bull MicrowaveIR Radiometry to study radiated power at early times (compression)
bull Phase Contrast Imaging to study turbulent density fluctuations during compression
PinchLens
Antenna
Waveguide Filter
Local Oscillator
Radiometer Channel
94 GHz
Received
power from
COBRA Ne
gas-puff pinch
Phase Contrast Imaging
s ik k k= +
( )12sin 2s ik k minus=
Probe Beam
Bragg-Scattered radiation
Phase plate
Detector
Lens
Plasma
Working to Understand Gas-Puff
Z-Pinch implosions
Energy partition and turbulence
21
CUI = 200 kA
I = 50 kA
Mag
net
ic f
ield
(T)
WIS
Am
plit
ud
e [m
m]
119861119911 = 0119861119911 = 660 119866119861119911 = 1 119896119866119861119911 = 15 119896119866
Time [ns]
bull MRTI stabilized with weak 119861119911bull Observation of helical
instability modesbull Flux compression in sheathbull Observations suggest full
current flows in pinch
bull lt25 of current in imploding plasma
bull Rotation with shear (119907120579 asymp119907119903 near stagnation)
bull Large fraction of energy and pressure in rotation
Azimuthal rotation profile
Average Instability Amplitude
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Research Topics in the Multi-University Center
bull Fundamental HED plasma physics
bull MagLIF ICF and HED radiation source physics
bull Laboratory Astrophysics
bull HED diagnostic development
bull Advanced computer simulation codes
8
bull Gas-puff z-pinches Characterize energy flow in detail Instability studies and dynamics XMHD effects
bull Shocks ndash collisional vs collisionless radiative vs non-radiative
bull Cylindrical liners Configurations driven by rotating field Anomalous current penetration due to azimuthal asymmetries Understanding inner and outer ablation phenomena
bull Radialconical wire arraysfoils ndash laboratory jets
bull Implodingexploding wire arrays
bull X-pinches
bull Novel configurationsexperiments
bull Power feed plasma flow
Opportunities for Training and
Professional Development
9
bull All (experimental) graduate students and postdocs are expected to design and lead experiments on pulsed power machines operated by center partners
bull Learn aboutmaintainupgrade pulsed power technologies
bull Gain experience with diagnostics and analysis techniques relevant to HED plasmas
bull Collaboration and training with center partners and national labs
bull Access to state-of the-art simulation codes used by center partners
bull Significant undergraduate training opportunities ranging from hands-on experimental work to simulation code development
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
10
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
11
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
Typical pulse shapes (Self-break)
COBRA Cornellrsquos ~1012 W 106 A 100-220 ns rise time 05120512pulsed power machine is used to produce high energy density plasmas
Reached 5000 shots in summer 2018 (now about 5700)
12
Half-machine mode ndash Highly reproducible 750 kA 120 ns rise time
Current
Voltage
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
13
Output Switches
XP ndash lsquosmall machinersquo capable of 250 kA 50 ns or 350 kA 150 ns
Primarily used for x-pinch studies
Fast pulse
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Marx Generator Systems at
Center Partners
14
MAGPIE ndash Imperial College 14 MA ~1012 W 250 ns rise time
Some Center Partners have LTDs
(Linear Transformer Drivers)
15
(a)
(b)
3-m-diameter MAIZE LTD (UM) (a) cutaway drawing (b) open-top system photo has 40 bricks in parallel in one stage Each brick has a switch (1) between two capacitors (2) iron cores (3) high voltage insulators (4) coaxial (5) and radial (6) transmission lines delivering current to conical power feed (7) and the vacuum load region (8)
Basic LTD circuit High-120641 ferromagnetic core increases inductance of undesiredparasitic surface current path
Build pulsed-power machine with ldquobricksrdquo in parallel (series) for more current (voltage)
Highly Capable Diagnostic Suites
Characterize Major Center Facilities
16
Pre-ionizer
PCDs
119861119911 field coils
Filtered X-raypinholes
X-ray pinholecamera
Diagnostic Laser(Mach ZehnderLaser ShearingInterferometryshadowgraphy)
10 J laser(Thomson Scattering)
XUV Quad Cams
Fibers
Fibers
12-frame
(a) (b)
(c)
(a) High-speed 12 frame camera (VisibleUV upgrade)(b) 10 J 3 ns 527 nm Laser for Thomson Scattering(c) Visible spectroscopy streak photography and PLIF
system
Examples shown at CU
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research Highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
17
Working to Understand Gas-Puff
Z-Pinch implosions
18
Neutral gas injection
Interaction of axial current and induced azimuthal field drives radial implosion
119869119911119861120579
StagnationThermalizationRadiation
Working to Understand Gas-Puff
Z-Pinch implosions
19
Energy partition and turbulence
Sophia Rocco(CU ndash HEDP 3)
WIS ndash Spectroscopic measurements suggest 119879119894 dominated by nonthermal
hydrodynamic KE near stagnation (119879119894119890119891119891
gt 119879119894)
Princeton ndash Sudden viscous dissipation mechanism can rapidly convert turbulent KE into thermal energy
Cornell ndash Identify origin of the difference between 119879119894 and 119879119894119890119891119891
using Thomson
scattering
Variable 119879119894119879119894 = 119879119890+Gaussian Velocity dist
20
bull MicrowaveIR Radiometry to study radiated power at early times (compression)
bull Phase Contrast Imaging to study turbulent density fluctuations during compression
PinchLens
Antenna
Waveguide Filter
Local Oscillator
Radiometer Channel
94 GHz
Received
power from
COBRA Ne
gas-puff pinch
Phase Contrast Imaging
s ik k k= +
( )12sin 2s ik k minus=
Probe Beam
Bragg-Scattered radiation
Phase plate
Detector
Lens
Plasma
Working to Understand Gas-Puff
Z-Pinch implosions
Energy partition and turbulence
21
CUI = 200 kA
I = 50 kA
Mag
net
ic f
ield
(T)
WIS
Am
plit
ud
e [m
m]
119861119911 = 0119861119911 = 660 119866119861119911 = 1 119896119866119861119911 = 15 119896119866
Time [ns]
bull MRTI stabilized with weak 119861119911bull Observation of helical
instability modesbull Flux compression in sheathbull Observations suggest full
current flows in pinch
bull lt25 of current in imploding plasma
bull Rotation with shear (119907120579 asymp119907119903 near stagnation)
bull Large fraction of energy and pressure in rotation
Azimuthal rotation profile
Average Instability Amplitude
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Opportunities for Training and
Professional Development
9
bull All (experimental) graduate students and postdocs are expected to design and lead experiments on pulsed power machines operated by center partners
bull Learn aboutmaintainupgrade pulsed power technologies
bull Gain experience with diagnostics and analysis techniques relevant to HED plasmas
bull Collaboration and training with center partners and national labs
bull Access to state-of the-art simulation codes used by center partners
bull Significant undergraduate training opportunities ranging from hands-on experimental work to simulation code development
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
10
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
11
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
Typical pulse shapes (Self-break)
COBRA Cornellrsquos ~1012 W 106 A 100-220 ns rise time 05120512pulsed power machine is used to produce high energy density plasmas
Reached 5000 shots in summer 2018 (now about 5700)
12
Half-machine mode ndash Highly reproducible 750 kA 120 ns rise time
Current
Voltage
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
13
Output Switches
XP ndash lsquosmall machinersquo capable of 250 kA 50 ns or 350 kA 150 ns
Primarily used for x-pinch studies
Fast pulse
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Marx Generator Systems at
Center Partners
14
MAGPIE ndash Imperial College 14 MA ~1012 W 250 ns rise time
Some Center Partners have LTDs
(Linear Transformer Drivers)
15
(a)
(b)
3-m-diameter MAIZE LTD (UM) (a) cutaway drawing (b) open-top system photo has 40 bricks in parallel in one stage Each brick has a switch (1) between two capacitors (2) iron cores (3) high voltage insulators (4) coaxial (5) and radial (6) transmission lines delivering current to conical power feed (7) and the vacuum load region (8)
Basic LTD circuit High-120641 ferromagnetic core increases inductance of undesiredparasitic surface current path
Build pulsed-power machine with ldquobricksrdquo in parallel (series) for more current (voltage)
Highly Capable Diagnostic Suites
Characterize Major Center Facilities
16
Pre-ionizer
PCDs
119861119911 field coils
Filtered X-raypinholes
X-ray pinholecamera
Diagnostic Laser(Mach ZehnderLaser ShearingInterferometryshadowgraphy)
10 J laser(Thomson Scattering)
XUV Quad Cams
Fibers
Fibers
12-frame
(a) (b)
(c)
(a) High-speed 12 frame camera (VisibleUV upgrade)(b) 10 J 3 ns 527 nm Laser for Thomson Scattering(c) Visible spectroscopy streak photography and PLIF
system
Examples shown at CU
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research Highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
17
Working to Understand Gas-Puff
Z-Pinch implosions
18
Neutral gas injection
Interaction of axial current and induced azimuthal field drives radial implosion
119869119911119861120579
StagnationThermalizationRadiation
Working to Understand Gas-Puff
Z-Pinch implosions
19
Energy partition and turbulence
Sophia Rocco(CU ndash HEDP 3)
WIS ndash Spectroscopic measurements suggest 119879119894 dominated by nonthermal
hydrodynamic KE near stagnation (119879119894119890119891119891
gt 119879119894)
Princeton ndash Sudden viscous dissipation mechanism can rapidly convert turbulent KE into thermal energy
Cornell ndash Identify origin of the difference between 119879119894 and 119879119894119890119891119891
using Thomson
scattering
Variable 119879119894119879119894 = 119879119890+Gaussian Velocity dist
20
bull MicrowaveIR Radiometry to study radiated power at early times (compression)
bull Phase Contrast Imaging to study turbulent density fluctuations during compression
PinchLens
Antenna
Waveguide Filter
Local Oscillator
Radiometer Channel
94 GHz
Received
power from
COBRA Ne
gas-puff pinch
Phase Contrast Imaging
s ik k k= +
( )12sin 2s ik k minus=
Probe Beam
Bragg-Scattered radiation
Phase plate
Detector
Lens
Plasma
Working to Understand Gas-Puff
Z-Pinch implosions
Energy partition and turbulence
21
CUI = 200 kA
I = 50 kA
Mag
net
ic f
ield
(T)
WIS
Am
plit
ud
e [m
m]
119861119911 = 0119861119911 = 660 119866119861119911 = 1 119896119866119861119911 = 15 119896119866
Time [ns]
bull MRTI stabilized with weak 119861119911bull Observation of helical
instability modesbull Flux compression in sheathbull Observations suggest full
current flows in pinch
bull lt25 of current in imploding plasma
bull Rotation with shear (119907120579 asymp119907119903 near stagnation)
bull Large fraction of energy and pressure in rotation
Azimuthal rotation profile
Average Instability Amplitude
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
10
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
11
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
Typical pulse shapes (Self-break)
COBRA Cornellrsquos ~1012 W 106 A 100-220 ns rise time 05120512pulsed power machine is used to produce high energy density plasmas
Reached 5000 shots in summer 2018 (now about 5700)
12
Half-machine mode ndash Highly reproducible 750 kA 120 ns rise time
Current
Voltage
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
13
Output Switches
XP ndash lsquosmall machinersquo capable of 250 kA 50 ns or 350 kA 150 ns
Primarily used for x-pinch studies
Fast pulse
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Marx Generator Systems at
Center Partners
14
MAGPIE ndash Imperial College 14 MA ~1012 W 250 ns rise time
Some Center Partners have LTDs
(Linear Transformer Drivers)
15
(a)
(b)
3-m-diameter MAIZE LTD (UM) (a) cutaway drawing (b) open-top system photo has 40 bricks in parallel in one stage Each brick has a switch (1) between two capacitors (2) iron cores (3) high voltage insulators (4) coaxial (5) and radial (6) transmission lines delivering current to conical power feed (7) and the vacuum load region (8)
Basic LTD circuit High-120641 ferromagnetic core increases inductance of undesiredparasitic surface current path
Build pulsed-power machine with ldquobricksrdquo in parallel (series) for more current (voltage)
Highly Capable Diagnostic Suites
Characterize Major Center Facilities
16
Pre-ionizer
PCDs
119861119911 field coils
Filtered X-raypinholes
X-ray pinholecamera
Diagnostic Laser(Mach ZehnderLaser ShearingInterferometryshadowgraphy)
10 J laser(Thomson Scattering)
XUV Quad Cams
Fibers
Fibers
12-frame
(a) (b)
(c)
(a) High-speed 12 frame camera (VisibleUV upgrade)(b) 10 J 3 ns 527 nm Laser for Thomson Scattering(c) Visible spectroscopy streak photography and PLIF
system
Examples shown at CU
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research Highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
17
Working to Understand Gas-Puff
Z-Pinch implosions
18
Neutral gas injection
Interaction of axial current and induced azimuthal field drives radial implosion
119869119911119861120579
StagnationThermalizationRadiation
Working to Understand Gas-Puff
Z-Pinch implosions
19
Energy partition and turbulence
Sophia Rocco(CU ndash HEDP 3)
WIS ndash Spectroscopic measurements suggest 119879119894 dominated by nonthermal
hydrodynamic KE near stagnation (119879119894119890119891119891
gt 119879119894)
Princeton ndash Sudden viscous dissipation mechanism can rapidly convert turbulent KE into thermal energy
Cornell ndash Identify origin of the difference between 119879119894 and 119879119894119890119891119891
using Thomson
scattering
Variable 119879119894119879119894 = 119879119890+Gaussian Velocity dist
20
bull MicrowaveIR Radiometry to study radiated power at early times (compression)
bull Phase Contrast Imaging to study turbulent density fluctuations during compression
PinchLens
Antenna
Waveguide Filter
Local Oscillator
Radiometer Channel
94 GHz
Received
power from
COBRA Ne
gas-puff pinch
Phase Contrast Imaging
s ik k k= +
( )12sin 2s ik k minus=
Probe Beam
Bragg-Scattered radiation
Phase plate
Detector
Lens
Plasma
Working to Understand Gas-Puff
Z-Pinch implosions
Energy partition and turbulence
21
CUI = 200 kA
I = 50 kA
Mag
net
ic f
ield
(T)
WIS
Am
plit
ud
e [m
m]
119861119911 = 0119861119911 = 660 119866119861119911 = 1 119896119866119861119911 = 15 119896119866
Time [ns]
bull MRTI stabilized with weak 119861119911bull Observation of helical
instability modesbull Flux compression in sheathbull Observations suggest full
current flows in pinch
bull lt25 of current in imploding plasma
bull Rotation with shear (119907120579 asymp119907119903 near stagnation)
bull Large fraction of energy and pressure in rotation
Azimuthal rotation profile
Average Instability Amplitude
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
11
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
Typical pulse shapes (Self-break)
COBRA Cornellrsquos ~1012 W 106 A 100-220 ns rise time 05120512pulsed power machine is used to produce high energy density plasmas
Reached 5000 shots in summer 2018 (now about 5700)
12
Half-machine mode ndash Highly reproducible 750 kA 120 ns rise time
Current
Voltage
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
13
Output Switches
XP ndash lsquosmall machinersquo capable of 250 kA 50 ns or 350 kA 150 ns
Primarily used for x-pinch studies
Fast pulse
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Marx Generator Systems at
Center Partners
14
MAGPIE ndash Imperial College 14 MA ~1012 W 250 ns rise time
Some Center Partners have LTDs
(Linear Transformer Drivers)
15
(a)
(b)
3-m-diameter MAIZE LTD (UM) (a) cutaway drawing (b) open-top system photo has 40 bricks in parallel in one stage Each brick has a switch (1) between two capacitors (2) iron cores (3) high voltage insulators (4) coaxial (5) and radial (6) transmission lines delivering current to conical power feed (7) and the vacuum load region (8)
Basic LTD circuit High-120641 ferromagnetic core increases inductance of undesiredparasitic surface current path
Build pulsed-power machine with ldquobricksrdquo in parallel (series) for more current (voltage)
Highly Capable Diagnostic Suites
Characterize Major Center Facilities
16
Pre-ionizer
PCDs
119861119911 field coils
Filtered X-raypinholes
X-ray pinholecamera
Diagnostic Laser(Mach ZehnderLaser ShearingInterferometryshadowgraphy)
10 J laser(Thomson Scattering)
XUV Quad Cams
Fibers
Fibers
12-frame
(a) (b)
(c)
(a) High-speed 12 frame camera (VisibleUV upgrade)(b) 10 J 3 ns 527 nm Laser for Thomson Scattering(c) Visible spectroscopy streak photography and PLIF
system
Examples shown at CU
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research Highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
17
Working to Understand Gas-Puff
Z-Pinch implosions
18
Neutral gas injection
Interaction of axial current and induced azimuthal field drives radial implosion
119869119911119861120579
StagnationThermalizationRadiation
Working to Understand Gas-Puff
Z-Pinch implosions
19
Energy partition and turbulence
Sophia Rocco(CU ndash HEDP 3)
WIS ndash Spectroscopic measurements suggest 119879119894 dominated by nonthermal
hydrodynamic KE near stagnation (119879119894119890119891119891
gt 119879119894)
Princeton ndash Sudden viscous dissipation mechanism can rapidly convert turbulent KE into thermal energy
Cornell ndash Identify origin of the difference between 119879119894 and 119879119894119890119891119891
using Thomson
scattering
Variable 119879119894119879119894 = 119879119890+Gaussian Velocity dist
20
bull MicrowaveIR Radiometry to study radiated power at early times (compression)
bull Phase Contrast Imaging to study turbulent density fluctuations during compression
PinchLens
Antenna
Waveguide Filter
Local Oscillator
Radiometer Channel
94 GHz
Received
power from
COBRA Ne
gas-puff pinch
Phase Contrast Imaging
s ik k k= +
( )12sin 2s ik k minus=
Probe Beam
Bragg-Scattered radiation
Phase plate
Detector
Lens
Plasma
Working to Understand Gas-Puff
Z-Pinch implosions
Energy partition and turbulence
21
CUI = 200 kA
I = 50 kA
Mag
net
ic f
ield
(T)
WIS
Am
plit
ud
e [m
m]
119861119911 = 0119861119911 = 660 119866119861119911 = 1 119896119866119861119911 = 15 119896119866
Time [ns]
bull MRTI stabilized with weak 119861119911bull Observation of helical
instability modesbull Flux compression in sheathbull Observations suggest full
current flows in pinch
bull lt25 of current in imploding plasma
bull Rotation with shear (119907120579 asymp119907119903 near stagnation)
bull Large fraction of energy and pressure in rotation
Azimuthal rotation profile
Average Instability Amplitude
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
12
Half-machine mode ndash Highly reproducible 750 kA 120 ns rise time
Current
Voltage
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Load Region
Marx Generator16x 135 uf caps70 kV = 53 kJ
Intermediate Storesim 457 nf
Self breakIntermediate switch
Pulseforming lines (30 ns amp 18 Ω each)
Output switches
Vacuum convolute amp Insulator stack
13
Output Switches
XP ndash lsquosmall machinersquo capable of 250 kA 50 ns or 350 kA 150 ns
Primarily used for x-pinch studies
Fast pulse
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Marx Generator Systems at
Center Partners
14
MAGPIE ndash Imperial College 14 MA ~1012 W 250 ns rise time
Some Center Partners have LTDs
(Linear Transformer Drivers)
15
(a)
(b)
3-m-diameter MAIZE LTD (UM) (a) cutaway drawing (b) open-top system photo has 40 bricks in parallel in one stage Each brick has a switch (1) between two capacitors (2) iron cores (3) high voltage insulators (4) coaxial (5) and radial (6) transmission lines delivering current to conical power feed (7) and the vacuum load region (8)
Basic LTD circuit High-120641 ferromagnetic core increases inductance of undesiredparasitic surface current path
Build pulsed-power machine with ldquobricksrdquo in parallel (series) for more current (voltage)
Highly Capable Diagnostic Suites
Characterize Major Center Facilities
16
Pre-ionizer
PCDs
119861119911 field coils
Filtered X-raypinholes
X-ray pinholecamera
Diagnostic Laser(Mach ZehnderLaser ShearingInterferometryshadowgraphy)
10 J laser(Thomson Scattering)
XUV Quad Cams
Fibers
Fibers
12-frame
(a) (b)
(c)
(a) High-speed 12 frame camera (VisibleUV upgrade)(b) 10 J 3 ns 527 nm Laser for Thomson Scattering(c) Visible spectroscopy streak photography and PLIF
system
Examples shown at CU
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research Highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
17
Working to Understand Gas-Puff
Z-Pinch implosions
18
Neutral gas injection
Interaction of axial current and induced azimuthal field drives radial implosion
119869119911119861120579
StagnationThermalizationRadiation
Working to Understand Gas-Puff
Z-Pinch implosions
19
Energy partition and turbulence
Sophia Rocco(CU ndash HEDP 3)
WIS ndash Spectroscopic measurements suggest 119879119894 dominated by nonthermal
hydrodynamic KE near stagnation (119879119894119890119891119891
gt 119879119894)
Princeton ndash Sudden viscous dissipation mechanism can rapidly convert turbulent KE into thermal energy
Cornell ndash Identify origin of the difference between 119879119894 and 119879119894119890119891119891
using Thomson
scattering
Variable 119879119894119879119894 = 119879119890+Gaussian Velocity dist
20
bull MicrowaveIR Radiometry to study radiated power at early times (compression)
bull Phase Contrast Imaging to study turbulent density fluctuations during compression
PinchLens
Antenna
Waveguide Filter
Local Oscillator
Radiometer Channel
94 GHz
Received
power from
COBRA Ne
gas-puff pinch
Phase Contrast Imaging
s ik k k= +
( )12sin 2s ik k minus=
Probe Beam
Bragg-Scattered radiation
Phase plate
Detector
Lens
Plasma
Working to Understand Gas-Puff
Z-Pinch implosions
Energy partition and turbulence
21
CUI = 200 kA
I = 50 kA
Mag
net
ic f
ield
(T)
WIS
Am
plit
ud
e [m
m]
119861119911 = 0119861119911 = 660 119866119861119911 = 1 119896119866119861119911 = 15 119896119866
Time [ns]
bull MRTI stabilized with weak 119861119911bull Observation of helical
instability modesbull Flux compression in sheathbull Observations suggest full
current flows in pinch
bull lt25 of current in imploding plasma
bull Rotation with shear (119907120579 asymp119907119903 near stagnation)
bull Large fraction of energy and pressure in rotation
Azimuthal rotation profile
Average Instability Amplitude
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
13
Output Switches
XP ndash lsquosmall machinersquo capable of 250 kA 50 ns or 350 kA 150 ns
Primarily used for x-pinch studies
Fast pulse
Pulsed Power Produced
Plasmas ndash Cornellrsquos Specialty
for gt50 Years
Marx Generator Systems at
Center Partners
14
MAGPIE ndash Imperial College 14 MA ~1012 W 250 ns rise time
Some Center Partners have LTDs
(Linear Transformer Drivers)
15
(a)
(b)
3-m-diameter MAIZE LTD (UM) (a) cutaway drawing (b) open-top system photo has 40 bricks in parallel in one stage Each brick has a switch (1) between two capacitors (2) iron cores (3) high voltage insulators (4) coaxial (5) and radial (6) transmission lines delivering current to conical power feed (7) and the vacuum load region (8)
Basic LTD circuit High-120641 ferromagnetic core increases inductance of undesiredparasitic surface current path
Build pulsed-power machine with ldquobricksrdquo in parallel (series) for more current (voltage)
Highly Capable Diagnostic Suites
Characterize Major Center Facilities
16
Pre-ionizer
PCDs
119861119911 field coils
Filtered X-raypinholes
X-ray pinholecamera
Diagnostic Laser(Mach ZehnderLaser ShearingInterferometryshadowgraphy)
10 J laser(Thomson Scattering)
XUV Quad Cams
Fibers
Fibers
12-frame
(a) (b)
(c)
(a) High-speed 12 frame camera (VisibleUV upgrade)(b) 10 J 3 ns 527 nm Laser for Thomson Scattering(c) Visible spectroscopy streak photography and PLIF
system
Examples shown at CU
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research Highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
17
Working to Understand Gas-Puff
Z-Pinch implosions
18
Neutral gas injection
Interaction of axial current and induced azimuthal field drives radial implosion
119869119911119861120579
StagnationThermalizationRadiation
Working to Understand Gas-Puff
Z-Pinch implosions
19
Energy partition and turbulence
Sophia Rocco(CU ndash HEDP 3)
WIS ndash Spectroscopic measurements suggest 119879119894 dominated by nonthermal
hydrodynamic KE near stagnation (119879119894119890119891119891
gt 119879119894)
Princeton ndash Sudden viscous dissipation mechanism can rapidly convert turbulent KE into thermal energy
Cornell ndash Identify origin of the difference between 119879119894 and 119879119894119890119891119891
using Thomson
scattering
Variable 119879119894119879119894 = 119879119890+Gaussian Velocity dist
20
bull MicrowaveIR Radiometry to study radiated power at early times (compression)
bull Phase Contrast Imaging to study turbulent density fluctuations during compression
PinchLens
Antenna
Waveguide Filter
Local Oscillator
Radiometer Channel
94 GHz
Received
power from
COBRA Ne
gas-puff pinch
Phase Contrast Imaging
s ik k k= +
( )12sin 2s ik k minus=
Probe Beam
Bragg-Scattered radiation
Phase plate
Detector
Lens
Plasma
Working to Understand Gas-Puff
Z-Pinch implosions
Energy partition and turbulence
21
CUI = 200 kA
I = 50 kA
Mag
net
ic f
ield
(T)
WIS
Am
plit
ud
e [m
m]
119861119911 = 0119861119911 = 660 119866119861119911 = 1 119896119866119861119911 = 15 119896119866
Time [ns]
bull MRTI stabilized with weak 119861119911bull Observation of helical
instability modesbull Flux compression in sheathbull Observations suggest full
current flows in pinch
bull lt25 of current in imploding plasma
bull Rotation with shear (119907120579 asymp119907119903 near stagnation)
bull Large fraction of energy and pressure in rotation
Azimuthal rotation profile
Average Instability Amplitude
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Marx Generator Systems at
Center Partners
14
MAGPIE ndash Imperial College 14 MA ~1012 W 250 ns rise time
Some Center Partners have LTDs
(Linear Transformer Drivers)
15
(a)
(b)
3-m-diameter MAIZE LTD (UM) (a) cutaway drawing (b) open-top system photo has 40 bricks in parallel in one stage Each brick has a switch (1) between two capacitors (2) iron cores (3) high voltage insulators (4) coaxial (5) and radial (6) transmission lines delivering current to conical power feed (7) and the vacuum load region (8)
Basic LTD circuit High-120641 ferromagnetic core increases inductance of undesiredparasitic surface current path
Build pulsed-power machine with ldquobricksrdquo in parallel (series) for more current (voltage)
Highly Capable Diagnostic Suites
Characterize Major Center Facilities
16
Pre-ionizer
PCDs
119861119911 field coils
Filtered X-raypinholes
X-ray pinholecamera
Diagnostic Laser(Mach ZehnderLaser ShearingInterferometryshadowgraphy)
10 J laser(Thomson Scattering)
XUV Quad Cams
Fibers
Fibers
12-frame
(a) (b)
(c)
(a) High-speed 12 frame camera (VisibleUV upgrade)(b) 10 J 3 ns 527 nm Laser for Thomson Scattering(c) Visible spectroscopy streak photography and PLIF
system
Examples shown at CU
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research Highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
17
Working to Understand Gas-Puff
Z-Pinch implosions
18
Neutral gas injection
Interaction of axial current and induced azimuthal field drives radial implosion
119869119911119861120579
StagnationThermalizationRadiation
Working to Understand Gas-Puff
Z-Pinch implosions
19
Energy partition and turbulence
Sophia Rocco(CU ndash HEDP 3)
WIS ndash Spectroscopic measurements suggest 119879119894 dominated by nonthermal
hydrodynamic KE near stagnation (119879119894119890119891119891
gt 119879119894)
Princeton ndash Sudden viscous dissipation mechanism can rapidly convert turbulent KE into thermal energy
Cornell ndash Identify origin of the difference between 119879119894 and 119879119894119890119891119891
using Thomson
scattering
Variable 119879119894119879119894 = 119879119890+Gaussian Velocity dist
20
bull MicrowaveIR Radiometry to study radiated power at early times (compression)
bull Phase Contrast Imaging to study turbulent density fluctuations during compression
PinchLens
Antenna
Waveguide Filter
Local Oscillator
Radiometer Channel
94 GHz
Received
power from
COBRA Ne
gas-puff pinch
Phase Contrast Imaging
s ik k k= +
( )12sin 2s ik k minus=
Probe Beam
Bragg-Scattered radiation
Phase plate
Detector
Lens
Plasma
Working to Understand Gas-Puff
Z-Pinch implosions
Energy partition and turbulence
21
CUI = 200 kA
I = 50 kA
Mag
net
ic f
ield
(T)
WIS
Am
plit
ud
e [m
m]
119861119911 = 0119861119911 = 660 119866119861119911 = 1 119896119866119861119911 = 15 119896119866
Time [ns]
bull MRTI stabilized with weak 119861119911bull Observation of helical
instability modesbull Flux compression in sheathbull Observations suggest full
current flows in pinch
bull lt25 of current in imploding plasma
bull Rotation with shear (119907120579 asymp119907119903 near stagnation)
bull Large fraction of energy and pressure in rotation
Azimuthal rotation profile
Average Instability Amplitude
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Some Center Partners have LTDs
(Linear Transformer Drivers)
15
(a)
(b)
3-m-diameter MAIZE LTD (UM) (a) cutaway drawing (b) open-top system photo has 40 bricks in parallel in one stage Each brick has a switch (1) between two capacitors (2) iron cores (3) high voltage insulators (4) coaxial (5) and radial (6) transmission lines delivering current to conical power feed (7) and the vacuum load region (8)
Basic LTD circuit High-120641 ferromagnetic core increases inductance of undesiredparasitic surface current path
Build pulsed-power machine with ldquobricksrdquo in parallel (series) for more current (voltage)
Highly Capable Diagnostic Suites
Characterize Major Center Facilities
16
Pre-ionizer
PCDs
119861119911 field coils
Filtered X-raypinholes
X-ray pinholecamera
Diagnostic Laser(Mach ZehnderLaser ShearingInterferometryshadowgraphy)
10 J laser(Thomson Scattering)
XUV Quad Cams
Fibers
Fibers
12-frame
(a) (b)
(c)
(a) High-speed 12 frame camera (VisibleUV upgrade)(b) 10 J 3 ns 527 nm Laser for Thomson Scattering(c) Visible spectroscopy streak photography and PLIF
system
Examples shown at CU
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research Highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
17
Working to Understand Gas-Puff
Z-Pinch implosions
18
Neutral gas injection
Interaction of axial current and induced azimuthal field drives radial implosion
119869119911119861120579
StagnationThermalizationRadiation
Working to Understand Gas-Puff
Z-Pinch implosions
19
Energy partition and turbulence
Sophia Rocco(CU ndash HEDP 3)
WIS ndash Spectroscopic measurements suggest 119879119894 dominated by nonthermal
hydrodynamic KE near stagnation (119879119894119890119891119891
gt 119879119894)
Princeton ndash Sudden viscous dissipation mechanism can rapidly convert turbulent KE into thermal energy
Cornell ndash Identify origin of the difference between 119879119894 and 119879119894119890119891119891
using Thomson
scattering
Variable 119879119894119879119894 = 119879119890+Gaussian Velocity dist
20
bull MicrowaveIR Radiometry to study radiated power at early times (compression)
bull Phase Contrast Imaging to study turbulent density fluctuations during compression
PinchLens
Antenna
Waveguide Filter
Local Oscillator
Radiometer Channel
94 GHz
Received
power from
COBRA Ne
gas-puff pinch
Phase Contrast Imaging
s ik k k= +
( )12sin 2s ik k minus=
Probe Beam
Bragg-Scattered radiation
Phase plate
Detector
Lens
Plasma
Working to Understand Gas-Puff
Z-Pinch implosions
Energy partition and turbulence
21
CUI = 200 kA
I = 50 kA
Mag
net
ic f
ield
(T)
WIS
Am
plit
ud
e [m
m]
119861119911 = 0119861119911 = 660 119866119861119911 = 1 119896119866119861119911 = 15 119896119866
Time [ns]
bull MRTI stabilized with weak 119861119911bull Observation of helical
instability modesbull Flux compression in sheathbull Observations suggest full
current flows in pinch
bull lt25 of current in imploding plasma
bull Rotation with shear (119907120579 asymp119907119903 near stagnation)
bull Large fraction of energy and pressure in rotation
Azimuthal rotation profile
Average Instability Amplitude
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Highly Capable Diagnostic Suites
Characterize Major Center Facilities
16
Pre-ionizer
PCDs
119861119911 field coils
Filtered X-raypinholes
X-ray pinholecamera
Diagnostic Laser(Mach ZehnderLaser ShearingInterferometryshadowgraphy)
10 J laser(Thomson Scattering)
XUV Quad Cams
Fibers
Fibers
12-frame
(a) (b)
(c)
(a) High-speed 12 frame camera (VisibleUV upgrade)(b) 10 J 3 ns 527 nm Laser for Thomson Scattering(c) Visible spectroscopy streak photography and PLIF
system
Examples shown at CU
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research Highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
17
Working to Understand Gas-Puff
Z-Pinch implosions
18
Neutral gas injection
Interaction of axial current and induced azimuthal field drives radial implosion
119869119911119861120579
StagnationThermalizationRadiation
Working to Understand Gas-Puff
Z-Pinch implosions
19
Energy partition and turbulence
Sophia Rocco(CU ndash HEDP 3)
WIS ndash Spectroscopic measurements suggest 119879119894 dominated by nonthermal
hydrodynamic KE near stagnation (119879119894119890119891119891
gt 119879119894)
Princeton ndash Sudden viscous dissipation mechanism can rapidly convert turbulent KE into thermal energy
Cornell ndash Identify origin of the difference between 119879119894 and 119879119894119890119891119891
using Thomson
scattering
Variable 119879119894119879119894 = 119879119890+Gaussian Velocity dist
20
bull MicrowaveIR Radiometry to study radiated power at early times (compression)
bull Phase Contrast Imaging to study turbulent density fluctuations during compression
PinchLens
Antenna
Waveguide Filter
Local Oscillator
Radiometer Channel
94 GHz
Received
power from
COBRA Ne
gas-puff pinch
Phase Contrast Imaging
s ik k k= +
( )12sin 2s ik k minus=
Probe Beam
Bragg-Scattered radiation
Phase plate
Detector
Lens
Plasma
Working to Understand Gas-Puff
Z-Pinch implosions
Energy partition and turbulence
21
CUI = 200 kA
I = 50 kA
Mag
net
ic f
ield
(T)
WIS
Am
plit
ud
e [m
m]
119861119911 = 0119861119911 = 660 119866119861119911 = 1 119896119866119861119911 = 15 119896119866
Time [ns]
bull MRTI stabilized with weak 119861119911bull Observation of helical
instability modesbull Flux compression in sheathbull Observations suggest full
current flows in pinch
bull lt25 of current in imploding plasma
bull Rotation with shear (119907120579 asymp119907119903 near stagnation)
bull Large fraction of energy and pressure in rotation
Azimuthal rotation profile
Average Instability Amplitude
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research Highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
17
Working to Understand Gas-Puff
Z-Pinch implosions
18
Neutral gas injection
Interaction of axial current and induced azimuthal field drives radial implosion
119869119911119861120579
StagnationThermalizationRadiation
Working to Understand Gas-Puff
Z-Pinch implosions
19
Energy partition and turbulence
Sophia Rocco(CU ndash HEDP 3)
WIS ndash Spectroscopic measurements suggest 119879119894 dominated by nonthermal
hydrodynamic KE near stagnation (119879119894119890119891119891
gt 119879119894)
Princeton ndash Sudden viscous dissipation mechanism can rapidly convert turbulent KE into thermal energy
Cornell ndash Identify origin of the difference between 119879119894 and 119879119894119890119891119891
using Thomson
scattering
Variable 119879119894119879119894 = 119879119890+Gaussian Velocity dist
20
bull MicrowaveIR Radiometry to study radiated power at early times (compression)
bull Phase Contrast Imaging to study turbulent density fluctuations during compression
PinchLens
Antenna
Waveguide Filter
Local Oscillator
Radiometer Channel
94 GHz
Received
power from
COBRA Ne
gas-puff pinch
Phase Contrast Imaging
s ik k k= +
( )12sin 2s ik k minus=
Probe Beam
Bragg-Scattered radiation
Phase plate
Detector
Lens
Plasma
Working to Understand Gas-Puff
Z-Pinch implosions
Energy partition and turbulence
21
CUI = 200 kA
I = 50 kA
Mag
net
ic f
ield
(T)
WIS
Am
plit
ud
e [m
m]
119861119911 = 0119861119911 = 660 119866119861119911 = 1 119896119866119861119911 = 15 119896119866
Time [ns]
bull MRTI stabilized with weak 119861119911bull Observation of helical
instability modesbull Flux compression in sheathbull Observations suggest full
current flows in pinch
bull lt25 of current in imploding plasma
bull Rotation with shear (119907120579 asymp119907119903 near stagnation)
bull Large fraction of energy and pressure in rotation
Azimuthal rotation profile
Average Instability Amplitude
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Working to Understand Gas-Puff
Z-Pinch implosions
18
Neutral gas injection
Interaction of axial current and induced azimuthal field drives radial implosion
119869119911119861120579
StagnationThermalizationRadiation
Working to Understand Gas-Puff
Z-Pinch implosions
19
Energy partition and turbulence
Sophia Rocco(CU ndash HEDP 3)
WIS ndash Spectroscopic measurements suggest 119879119894 dominated by nonthermal
hydrodynamic KE near stagnation (119879119894119890119891119891
gt 119879119894)
Princeton ndash Sudden viscous dissipation mechanism can rapidly convert turbulent KE into thermal energy
Cornell ndash Identify origin of the difference between 119879119894 and 119879119894119890119891119891
using Thomson
scattering
Variable 119879119894119879119894 = 119879119890+Gaussian Velocity dist
20
bull MicrowaveIR Radiometry to study radiated power at early times (compression)
bull Phase Contrast Imaging to study turbulent density fluctuations during compression
PinchLens
Antenna
Waveguide Filter
Local Oscillator
Radiometer Channel
94 GHz
Received
power from
COBRA Ne
gas-puff pinch
Phase Contrast Imaging
s ik k k= +
( )12sin 2s ik k minus=
Probe Beam
Bragg-Scattered radiation
Phase plate
Detector
Lens
Plasma
Working to Understand Gas-Puff
Z-Pinch implosions
Energy partition and turbulence
21
CUI = 200 kA
I = 50 kA
Mag
net
ic f
ield
(T)
WIS
Am
plit
ud
e [m
m]
119861119911 = 0119861119911 = 660 119866119861119911 = 1 119896119866119861119911 = 15 119896119866
Time [ns]
bull MRTI stabilized with weak 119861119911bull Observation of helical
instability modesbull Flux compression in sheathbull Observations suggest full
current flows in pinch
bull lt25 of current in imploding plasma
bull Rotation with shear (119907120579 asymp119907119903 near stagnation)
bull Large fraction of energy and pressure in rotation
Azimuthal rotation profile
Average Instability Amplitude
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Working to Understand Gas-Puff
Z-Pinch implosions
19
Energy partition and turbulence
Sophia Rocco(CU ndash HEDP 3)
WIS ndash Spectroscopic measurements suggest 119879119894 dominated by nonthermal
hydrodynamic KE near stagnation (119879119894119890119891119891
gt 119879119894)
Princeton ndash Sudden viscous dissipation mechanism can rapidly convert turbulent KE into thermal energy
Cornell ndash Identify origin of the difference between 119879119894 and 119879119894119890119891119891
using Thomson
scattering
Variable 119879119894119879119894 = 119879119890+Gaussian Velocity dist
20
bull MicrowaveIR Radiometry to study radiated power at early times (compression)
bull Phase Contrast Imaging to study turbulent density fluctuations during compression
PinchLens
Antenna
Waveguide Filter
Local Oscillator
Radiometer Channel
94 GHz
Received
power from
COBRA Ne
gas-puff pinch
Phase Contrast Imaging
s ik k k= +
( )12sin 2s ik k minus=
Probe Beam
Bragg-Scattered radiation
Phase plate
Detector
Lens
Plasma
Working to Understand Gas-Puff
Z-Pinch implosions
Energy partition and turbulence
21
CUI = 200 kA
I = 50 kA
Mag
net
ic f
ield
(T)
WIS
Am
plit
ud
e [m
m]
119861119911 = 0119861119911 = 660 119866119861119911 = 1 119896119866119861119911 = 15 119896119866
Time [ns]
bull MRTI stabilized with weak 119861119911bull Observation of helical
instability modesbull Flux compression in sheathbull Observations suggest full
current flows in pinch
bull lt25 of current in imploding plasma
bull Rotation with shear (119907120579 asymp119907119903 near stagnation)
bull Large fraction of energy and pressure in rotation
Azimuthal rotation profile
Average Instability Amplitude
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
20
bull MicrowaveIR Radiometry to study radiated power at early times (compression)
bull Phase Contrast Imaging to study turbulent density fluctuations during compression
PinchLens
Antenna
Waveguide Filter
Local Oscillator
Radiometer Channel
94 GHz
Received
power from
COBRA Ne
gas-puff pinch
Phase Contrast Imaging
s ik k k= +
( )12sin 2s ik k minus=
Probe Beam
Bragg-Scattered radiation
Phase plate
Detector
Lens
Plasma
Working to Understand Gas-Puff
Z-Pinch implosions
Energy partition and turbulence
21
CUI = 200 kA
I = 50 kA
Mag
net
ic f
ield
(T)
WIS
Am
plit
ud
e [m
m]
119861119911 = 0119861119911 = 660 119866119861119911 = 1 119896119866119861119911 = 15 119896119866
Time [ns]
bull MRTI stabilized with weak 119861119911bull Observation of helical
instability modesbull Flux compression in sheathbull Observations suggest full
current flows in pinch
bull lt25 of current in imploding plasma
bull Rotation with shear (119907120579 asymp119907119903 near stagnation)
bull Large fraction of energy and pressure in rotation
Azimuthal rotation profile
Average Instability Amplitude
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
21
CUI = 200 kA
I = 50 kA
Mag
net
ic f
ield
(T)
WIS
Am
plit
ud
e [m
m]
119861119911 = 0119861119911 = 660 119866119861119911 = 1 119896119866119861119911 = 15 119896119866
Time [ns]
bull MRTI stabilized with weak 119861119911bull Observation of helical
instability modesbull Flux compression in sheathbull Observations suggest full
current flows in pinch
bull lt25 of current in imploding plasma
bull Rotation with shear (119907120579 asymp119907119903 near stagnation)
bull Large fraction of energy and pressure in rotation
Azimuthal rotation profile
Average Instability Amplitude
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
22
Charles Seyler(CU)
Flux amplification by force- free currents ndash an under investigated effect of the Hall term
Strong enhancement of 119861119911in Hall MHD case due to force-free currents in low density region near outer boundary
Hall MHDMHD
Working to Understand Gas-Puff
Z-Pinch implosions
Effects of axial magnetic field
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
23
Experiments show current channel moves outward near stagnation
C Stollberg PhD thesisI E Ochs C Stollberg et al Physics of Plasmas 26 122706 (2019)
Evolution of the current distribution depends strongly on the specifics of the implosion profile
Velocity profile
Enclosed current profile
1199050
11986890
Working to Understand Gas-Puff
Z-Pinch implosions
Current channel evolution
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
24
Neon 144215145 ns
Argon 072115125 ns
e17 e17
Argon 144215155 ns
e18 Krypton 072115157 ns
e17
119898lowast sim 15 120583119892119888119898
119898lowast sim 30 120583119892119888119898
Species dependent ionization of center gas puff Speciesdensity dependent piston profile and instability growth
Working to Understand Gas-Puff
Z-Pinch implosions
Effect of gas species and fill density
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
Diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
25
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
26
Zeeman Polarization Spectroscopy
Diagnostic DevelopmentNiansheng Qi
(CU L3)
Jay Angel(CU)
Polarization spectroscopy1
1) R Doron et al High Energy Density Phys 10 56ndash60 (2014)
bu
nd
le1
bu
nd
le2 C IV lines with no evident
shift suggesting both polarized components got through (not viewing || to B)
119903 = 11 mm (fiber 8)edge of pinch
580 nm 581 nm
C IV doublet
580 nm 581 nm
C IV doublet
bu
nd
le1
bu
nd
le2
120590119871
120590119877
Ne I
12345678
12345678
C IV shift indicates 119861120579 asymp 17 T consistent with prediction based on machine current
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Advanced Thomson Scattering
Diagnostic Development
27
First EPW features measured in gas-puff z-pinch
Example TS setup for gas puff z-pinch experiments on COBRA
Prism-based beam-splitting technique4 x 25 J laser pulses delivered colinearly with arbitrary delays
12 ns streaked IAW feature
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
28
Transport Coefficients
Jason Hamilton(CU)
HEDP 1
PERSEUS code in use at CU SNL LLNL and UM is being upgraded to include thermoelectric transport with higher moment plasma models
Solve up to 13-Moment equations to include non-equilibrium physics such as Nernst effect
Keeps all equations hyperbolic with completely local implicit source terms
Allows accurate modeling of lower collisionality regimes bridging gap between fluid and kinetic models
Passes 1D validation and verification tests
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Dynamic Screw Pinch
29
Paul Campbell (UM ndash HEDP 8)
Axial magnetic field (Bz) of 14 T generated by helical return current and measured with
John Greenlyrsquos micro B-dot probes
Straight return current(standard z-pinch)
Helical return current (dynamic screw-pinch)
CADModel of return-current
structure
Visible self-emission images
XUV images
Helical instability structures
No helical instabilities large trailing
finger-like structures
bull Testing the effects of rotating the driving magnetic field during a thin-foil implosion
bull Cornellrsquos COBRA facility used via center collaboration
P F Schmit A L Velikovich R D McBride et al Phys Rev Lett 117 205001 (2016)
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
30
Jeff Woolstrum(UM ndash HEDP 6)
Dynamic Screw Pinch SimsValidation with COBRA data
Effects of on-axis support rod on helical modes post-stagnation
WithRod
NoRod
m = 2 modes found in sims amp experiments
Perseus 3D XMHD simulations now running on FLUX cluster to model cylindrical liner implosions and validate experimental observations
Pre-Imposed Bz Sims Helical mode validation with MAIZE LTD data
Wire array PERSEUS validation
PERSEUS from C E Seyler Cornell Phys Plasmas 25 062711 (2018)
Liner Implosion Simulations at UM
MAIZE LTD data fromD Yager-Elorriaga et al PoP 23 124502 (2016)
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
31
Laser Gate
S A Slutz et al Phys Plasmas 24 012704 (2017)
Target-Fab withS Klein (UM) ampC C Kuranz (UM)
New CW laser imaging diagnostic at UM developed inCenter collaboration with Dr Simon Bland (Imperial C)
bull Laser entrance hole (LEH) window is believed to be a source of contaminant mix in the MagLIF fuel
bull Laser Gate will ldquopoprdquo the window open well before the Z machine fires
bull First targets built pressurized and tested by LRGF Fellow Stephanie Miller
Stephanie Miller (UM ndash HEDP 7)
(Last summer at SNL)
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
32
Bow Shocks in Radiatively Cooled
Magnetically Accelerated Plasma Flows
bull Demonstrate bow-shock formation on COBRA at high in-flow density ne = 1x1017 to 1x1019 cm-3 Te = 5-60 eV
bull Examine plasma velocity and temperature using multi-pointThomson scattering diagnostic a = 1klD = 1 - 5 (collective)
bull Recent results show plasma heating ahead of shock position whilein-flow velocity is still high ndash indicative of a radiative precursorahead of the shock
2 4 6 8 10 12 14 16 18 20
0
5
10
15
20
25
30
35
40
45
50
55
Ve
locity 1
0^5
ms
Ele
ctr
on
Te
mp
era
ture
e
V
Fiber
Electron Temperature
Increasing radius
040
045
050
055
060
065
VelocityTARGET
POSITION
Plasma flowLoad wire Target
TS volumes
XUV SELF-EMISSION FRAMES
l
radius
THOMSON SCATTERING SPECTRA (ION FEATURE)
l0 Doppler shift from l0
gives velocity
Fitting of ion feature peak separation gives Te
-03 -02 -01 00 01
1000
2000
3000
4000
5000
Inte
nsity
Wavelength shift nm
l0
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
33
Coaxial Vacuum Gap Breakdown for
Pulsed Power Liners
Magnetic field traces for Gold coated liner Magnetic field traces for graphite (Aerodag-G) coated liner
BdotProbes
BdotProbes
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
OP
TIC
AL
SELF
-EM
ISSI
ON
FRA
MES
bull Coaxial vacuum gap on a liner to mimic Sandia z-machine MagLIF experiment
bull Monitor current density distribution and evolution in time and space of liner and across gap with magnetic field probes and image with gated optical framing camera
bull Clear non-uniformity observed in azimuthal current distribution for most experiments up to 1MA
bull Coating electrodes with various metals can improve current density uniformity
Sam Cordaro (UCSD - HEDP 9)
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
34
Time-resolved Spectra of Hybrid X-
Pinches on XPLebedev Physical Institute
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
35
New X-pinch Technologies
900 1000 1100 1200 1300 14000
20
40
60
80
100
120
Cu
rre
nt
(kA
)
Time(ns)
00
05
10
15
20 PCD A 65um Al
PCDB 20um Be
PC
D s
ign
al
5
10
15
20
25
bull New ultra portable X-pinch lsquoDry pinch 1rsquo ndash 50 kg 30x30x80 cmbull Easy to use ndash 3hrs training No oil water or SF6bull Current up to 140 kA in 200 nsbull Spot size lt25 120583119898 ns duration 10 mJ in lt10keV used for radiography and EXAFSbull New system with inbuilt charging triggering and higher dIdt in production (will just need a laptop and
24 V power supply ndash designs distributed by CC)
Lebedev Physical Institute
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
36
Effects of collisions in warm dense matter
Sperling et al PRL 2015
X-ray Scattering spectra for
aluminum Tommy Hentschel(CU ndash HEDP 10)
Calculating dielectric functions 120576
for arbitrary temperatures amp
densities
First ignoring individual
interactionscollision in a material
Then incorporating ionic structure
via an electron-ion collision
frequency
examples dynamic structure
factor for x-ray TS dielectric
functions to calculate
conductivities
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Outline
1 Introduction to the Center
2 Introduction to Pulsed Power and Diagnostic Systems
Marx Generators
Linear transformer drivers
diagnostics
3 Research highlights
Coordinated
Collaborative
Center Partner Exploratory Accomplishments
37
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
38
Bow Shocks in Magnetized Flows
obstacle
supportbow shock
B
bull Spherical Obstacle placed in the flow from a radial foil (right) or exploding wire array (top)
bull Supersonic flow with 119872119904 sim 3 119872119860 sim 2 (right)bull Flow carries poloidal magnetic field 119861 sim 3 T (right)bull Thomson scattering in downstream region to
investigate bow shock structure
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
39
Radiography of Convergent
Shockwaves at ESRF
bull Pulsed power experiments at ESRF used to explore imploding shockwaves generated by wire arrays in water Absolute density measurements
via radiography Enables first quantitative
comparisons to MHD codes can now predict high pressure conditions on axis
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
40
X-pinch studies
Hybrid X-pinch Study
Twisted Wires
Demonstrates the ability to perform dynamic radiography using two small sized
hotspots the amplitude of each can be controlled by the number of twists
Ahmed Elshafiey(CU ndash HEDP 2)
Source size ~60120583m50120583m Pinhole imaging
Mixing of Ar and Ti in hotspot
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
41
Magnetic Mirror for Wire Plasma
Confinement
Chiatai Chen(CU ndash HEDP 4)
Magnetic mirror liner inspired
by automag concept Preheat plasma simulated by wire on
axis
Demonstrated B field
agreement between ANSYS
sims and experiments on
COBRA
bull 114 difference
Simplified wire lsquolinersrsquo used for
proof of principle
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
42
Jacob Banasek(CUrarr UCSD)
Laser heating
XUV
First identification of EPW feature on COBRA
TS and XMHD Effects in Laboratory Plasma Jets
Experimental agreement with PERSEUS SimsHeating differences suggest differences in 119899119890
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
43
Thank you for your attention
please check out our student posters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Extra slides
44
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Peer Reviewed Journal
Publications (FY 2019)
45
1 Evolution of X-pinch loads for pulsed power generators with current from 50 to 5000 kA T A Shelkovenko S A Pikuz I N Tilikin M D Mitchell S N Bland D A Hammer Matter and Radiation at Extremes 3 267 (2018)
2 A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications R D McBride W A Stygar M E Cuneo D B Sinars M G Mazarakis J J Leckbee M E Savage B T Hutsel J D Douglass M L Kiefer B V Oliver G R Laity M R Gomez D A Yager-Elorriaga S G Patel B M Kovalchuk A A Kim P-A Gourdain S N Bland S Portillo S C Bott-Suzuki F N Beg Y Maron R B Spielman D V Rose D R Welch J C Zier J W Schumer J B Greenly A M Covington A M Steiner P C Campbell S M Miller J M Woolstrum N B Ramey A P Shah B J Sporer N M Jordan Y Y Lau and R M Gilgenbach IEEE Trans Plasma Sci 46 3928 ndash 3967 (2018)
3 Inverse Liner Z-Pinch An Experimental Pulsed Power Platform for Studying Radiative Shocks T Clayson S V Lebedev F Suzuki-Vidal G C Burdiak J W D Halliday J D Hare J Ma L G Suttle E R Tubman IEEE Trans Plasma Sci 46 (2018)
4 Diagnostic and Power Feed Upgrades to the MAIZE Facility P C Campbell J M Woolstrum F Antoulinakis T M Jones D A Yager-Elorriaga S M Miller N M Jordan Y Y Lau R M Gilgenbach and R D McBride IEEE Trans Plasma Sci 46 3973 (2018)
5 Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack J Applied Physics 124 153301 (2018)
6 Core structure and secondary breakdown of an exploding wire in the current-pause Regime V M Romanova A R Mingaleev A E Ter-Oganesyan T A Shelkovenko G V Ivanenkov S A Pikuz Matter and Radiation at Extremes 4 026401 (2019)
7 Early Stage of the Explosion of Thin Flat Foils in a High-Current Diode at a Current of 40ndash80 kAN Tilikin T A Shelkovenko A R Mingaleev V M Romanova S A Pikuz Journal of Experimental and Theoretical Physics 128 pp 946ndash951 (2019)
8 Effects of a preembedded axial magnetic field on the current distribution in a Z-pinch implosionD Mikitchuk M Cvejić R Doron E Kroupp C Stollberg Y Maron A L Velikovich N D Ouart J L Giuliani T A Mehlhorn E P Yu and A Fruchtman Phys Rev Lett 122 045001 (2019)
9 Determination of the ion temperature in a high-energy-density plasma using the Stark effect D Alumot E Kroupp E Stambulchik A Starobinets I Uschmann and Y Maron Phys Rev Lett 122095001 (2019)
10 Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments S P Theocharous S N Bland D Yanuka A Rososhek M P Olbinado A Rack Ya E Krasik Rev Sci Instrum 90 013504 (2019)
11 Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array D Yanuka S Theocharous S Efimov S N Bland A Rososhek Ya E Krasik M P Olbinado A Rack J Appl Phys 125 093301 (2019)
12 X-ray radiography of the overheating instability in underwater electrical explosions of wires D Yanuka A Rososhek S Theocharous S N Bland Ya E Krasik M P Olbinado A Rack and EV Oreshkin Phys Plasmas 26 (2019)
13 Two-colour interferometry and Thomson scattering measurements of a plasma gun J D Hare J MacDonald S Bland J Dranczewski J HallidayS Lebedev L Suttle E Tubman W Rozmus Plasma Physics and Controlled Fusion 61 ISSN 0741-3335 (2019)
14 Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilitiesS V Lebedev A Frank A and D D Ryutov Rev Mod Phys 91 0034-6861 (2019)
15 Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas I E Ochs N J Fisch Phys Plasmas 25 122306 (2018)
16 Favorable Collisional Demixing of Ash and Fuel in Magnetized Inertial Fusion Ian E Ochs Nathaniel J Fisch Phys Rev Lett 121 235002 (2018)
17 Understanding turbulence in compressing plasma as a quasi-EOS S Davidovits N J Fisch Phys Plasmas 26 062709 (2019)
18 Viscous Dissipation in two-dimensional Compression of Turbulence S Davidovits and N J Fisch Phys Plasmas 26 082702 (2019)
19 Radial Current and Rotation Profile Tailoring in Highly Ionized Linear Plasma Devices E J Kolmes I E Ochs M E Mlodik J M Rax R Gueroult and N J Fisch Phys Plasmas 26 082309 (2019)
19 Peer reviewedpublications
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Conference Proceedings
(FY 2019)
46
1 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners S W Cordaro S C Bott-Suzuki T Oliver 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
2 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver W Potter J Banasek S Rocco B R Kusse D A Hammer 11th International Conference on Dense Z-Pinches Beijing China August 19-23 2019
3 Magnetized shock experiments using exploding wire arrays L Suttle 11-th Int Conf on Dense Z-pinches Beijing China August 2019
4 Study of flat foil explosion at (01 ndash 5)109 Acm2 current density T A Shelkovenko S A Pikuz I N Tilikin A R Mingaleev W Potter D A Hammer 11-th Int Conf on Dense Z-pinches Beijing China Book of Abstracts p71 (2019)
5 Z-pinch driven laboratory astrophysics experiments at Imperial College SV Lebedev 11-th Int Conf on Dense Z-pinches Beijing China August 2019
6 Z-pinch Simulations at Imperial College J Chittenden 11-th Int Conf on Dense Z-pinches Beijing China August 2019
7 New insights into the pulsed power-driven explosion of underwater wires and wire arrays S N Bland 11-th Int Conf on Dense Z-pinches Beijing China August 2019
8 Stabilizing Liner Implosions with a Time-Dependent Axial Magnetic Field P C Campbell T M Jones J M Woolstrum N M Jordan John B Greenly William Potter E S Lavine C E Seyler B R Kusse D A Hammer and R D McBride 11th International Conference on Dense Z-Pinches (DZP) 2019
9 Laser Gate Experiment for Reducing Preheat Energy Coupling Losses in Magnetized Liner Inertial Fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Validation of PERSEUS and Convergence Ratio Effects on Z-Pinch Implosions JM Woolstrum DA Yager-Elorriaga P C Campbell S M Miller N M Jordan C E Seyler and R D McBride 11-th Int Conf on Dense Z-pinches Beijing China August 2019
10 Conference proceedings
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Invited Talks
(FY 2019)
47
1 Mega-amps and Megabars S N Bland Michigan Institute of Plasma Science and Engineering Seminar April 2019
2 New insights into the pulsed power driven explosion of underwater wires and wire arrays S N Bland IEEE PPPS Conference Orlando June 2019
3 Investigating Ion Energy Partitioning in Gas-puff Z-pinches with Thomson Scattering S V R Rocco J T Banasek W Potter E S Lavine and D A Hammer June 2019 IEEE ICOPS Orlando FL
4 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle 46th EPS Conference on Plasma Physics Milan Italy July 2019
5 Interactions of magnetized plasma flows in pulsed-power driven experiments L Suttle 6th Workshop on Magnetic fields in Laboratory High Energy Density Plasmas Pingtang China June 2019
6 Interacting magnetized plasma flows in pulsed-power driven experiments L Suttle Xian Jiaotong University August 2019
7 Laser and pulsed power coupling for magnetized liner inertial fusion (MagLIF) S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum C C Kuranz M R Gomez N M Jordan and R D McBride at the 6th International Conference on High Energy Density Science (Oxford UK March 31 ndash April 5 2019)
8 Upgrades to the 1-MA 100-ns MAIZE Pulsed Power Facility A P Shah at the High-Energy-Density Summer School University of California San Diego (La Jolla July 28 ndash August 10 2019)
9 Overview of Pulsed Power Driven Research at the University of Michigan N M Jordan at the Z Fundamental Science Workshop (Albuquerque NM August 2019)
10 Multi-University Center of Excellence for Pulsed-Power-Driven High-Energy Density Science E Sander Lavine OLUG workshop April 24 2019
10 Invited Talks
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
Contributed TalksPosters
(FY 2019)
48
1 J T Banasek S V R Rocco W M Potter E S Lavine T Byvank B R Kusse C E Seyler and D A Hammer Thomson Scattering on Laboratory Plasma Jets to
Study Current Polarity Effects 2019 Thomson Scattering Workshop Rochester NY Aug 2019
2 J T Banasek S V R Rocco T Byvank W M Potter B R Kusse and D A Hammer Thomson Scattering on Laboratory Plasma Jets to Study Current Polarity
Effects IEEE-ICOPS Orlando Fl June 2019
3 J T Banasek S V R Rocco W M Potter T Byvank B R Kusse and D A Hammer Electron Plasma Wave Thomson Scattering on Laboratory Plasma Jets APS-
DDP Portland OR Nov 2018
4 SV Lebedev Thomson scattering in pulsed power driven HEDP experiments on MAGPIE generator Thomson scattering workshop Rochester NY USA August
2019
5 High Voltage Coaxial Vacuum Gap Breakdown for Pulsed Power Liners Sam Cordaro Simon Bott-Suzuki Levon Atoyan Tom Byvank William Potter Bruce
Kusse John Greenly presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23 - 28 June 2019
6 Thomson Scattering Measurements of Bow-shocks in radiatively cooled magnetically accelerated plasma flows Simon C Bott-Suzuki S W Cordaro T Oliver
W Potter J Banasek S Rocco B R Kusse D A Hammer presented at the IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-28 June 2019
7 Direct observation of the current evolution in a small-scale self-compressing plasma column Christine Stollberg Eyal Kroupp Dmitry Mikitchuk Marko Cvejic
Ramy Doron Evgeny Stambulchik Y Maron Amnon Fruchtman Uri Shumlak John Giuliani IEEE Pulsed Power and Plasma Science Conference Orlando FL 23-
28 June 2019
8 Ion velocities measurements in Z-pinch with pre-embedded axial magnetic field Marko Cvejić Dimitry Mikitchuk Eyal Kroupp Ramy Doron Yitzhak Maron Uri
Shumlak IVS-IPSTA 2019 - 37th Annual Conference and WorkshopHaifa Sept 3rd 2019
9 Multi frame synchrotron radiography of instability growth in pulsed power driven HEDP experiments SN Bland APS DPP Conference Portland OR November
2018
10 An ultra-portable X-pinch driver for hard X-ray diagnostics S N Bland UK Pulsed Power Symposium Loughborough UK April 2019
11 An ultra-portable X-pinch driver for hard X-ray diagnostics SN Bland IEEE PPPS Conference Orlando FL June 2019
12 The interaction of a magnetized plasma flow with strongly magnetized bodies in HEDP experiments L Suttle APS-DPP Portland OR November 2018
13 Recent Magnetised High Energy Density Experiments on the MAGPIE Pulsed Power Generator S V Lebedev APS-DPP Portland OR November 2018
14 Magnetised turbulence in high-energy-density pulsed-power-driven experiments J D Hare APS-DPP Portland OR USA November 2018
15 Oblique shocks formed in magnetized plasma flows E Tubman APS-DPP Portland OR USA November 2018
16 Inverse liner Z-pinch An experimental pulsed power platform for studying radiative shocks T Clayson APS-DPP Portland OR USA November 2018
17 Time Resolved Measurements of Electron Acceleration in Pulsed Power Driven Magnetic Reconnection J Halliday APS-DPP Portland OR USA November
2018
18 Magnetic Reconnection Experiments on the MAGPIE Pulsed Power Generator J W D Halliday APS DPP (Mini Conference Magnetic Reconnection) November
2018
19 The effect of advected magnetic fields in jet propagation experiments D Russell APS-DPP Portland OR November 2018
20 Magnetic and Wire Explosion Flyer Launch S Theocharous ICHED 2019 Oxford UK April 2019
21 Flyer Plate Acceleration using Underwater Electrical Wire Explosions S Theocharous PPPS 2019 Orlando FL June 2019
22 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh Direct Drive Fast Ignition Workshop Rome April 2019
23 Potential under-dense experiments to measure extended-magnetohydrodynamic effects C A Walsh International Conference on High Energy Density Physics
Oxford UK April 2019
24 X-ray radiography of copper and tungsten wire underwater electrical explosions D Yanuka APS DPP Portland USA November 2018
25 Multi Frame Synchrotron Radiography of Pulsed Power Driven Wire Explosions D Yanuka International Conference on High Energy Density Physics Oxford UK
April 2019
26 Electrical explosions of cylindrical wire arrays in different materials D Yanuka PPPS Orlando USA June 2019
27 R D McBride G R Laity M L Kiefer M E Cuneo and D B Sinars Pulsed power development needs driver technology workforce and experimentally
validated multi-scale models amp algorithms (seamless integration from PICkinetic to radiation-XMHD) at the Joint Town Hall Meeting for the Plasma 2020
Decadal Assessment by the National Academies of Science and Engineering and the APS-DPP Community Planning Process for the US DOE Office of Fusion Energy
Sciences (University of Rochesterrsquos Laboratory for Laser Energetics Rochester NY May 16 2019)
28 J M Woolstrum P C Campbell S M Miller NB Ramey N M Jordan CE Seyler and Ryan D McBride Experimental and Computational Exploration of the
Effects of Non-Uniform Applied Axial Magnetic Field on Z-Pinch Imploding Cylindrical Foils 60th APS-DPP Portland OR Nov 2018
29 P C Campbell T M Jones C Wagner S M Miller J M Woolstrum N B Ramey A P Shah N M Jordan Y Y Lau R M Gilgenbach and R D McBride Time-
Dependent Helical Magnetic Field Effects on Cylindrical Liner Ablations 60th APS-DPP Portland OR Nov 2018
30 S M Miller S R Klein P C Campbell J M Woolstrum C C Kuranz N M Jordan and R D McBride Laser Gate Experiment for Magnetized Liner Inertial Fusion
(MagLIF) Utilizing a Mini-Pulser 60th APS-DPP Portland OR November 2018
31 A P Shah N M Jordan CE Seyler J M Woolstrum PC Campbell SM Miller and R D McBride Developing Dense Plasma Focus Capabilities at the University
of Michigan 60th APS-DPP Portland OR Nov 2018
32 Brendan Sporer Nick Jordan Ryan McBride Construction of the BLUE Linear Transformer Driver System at the University of Michigan 60th Annual Meeting of
the APS Division of Plasma Physics November 2018
33 Paul Campbell Tanner Jones Jeff Woolstrum Nick Jordan John Greenly William Potter E Sander Lavine Charles Seyler Bruce Kusse Dave Hammer and Ryan
McBride Time-Dependent Helical Magnetic Field Effects On Cylindrical Liner Implosions IEEE-ICOPS 2019
34 Jeff Woolstrum David Yager-Elorriaga Paul Campbell Stephanie Miller N M Jordan Charles Seyler and Ryan McBride Convergence Ratio Effects On Ultra-Thin
Foil Liner Implosion And Explosion Stability IEEE-ICOPS 2019
35 Akash Shah Paul Campbell Stephanie Miller Jeff Woolstrum Brendan Sporer Nick Jordan and Ryan McBride Extending Experimental And Diagnostics
Capabilities On The 1-Ma 100-Ns Maize Pulsed Power Facility IEEE-ICOPS 2019
36 S M Miller S A Slutz S R Klein S N Bland P C Campbell J M Woolstrum M R Gomez C C Kuranz N M Jordan and R D McBride ldquoLaser Gate Experiment
for Reducing Preheat Energy Coupling Losses in MagLIFrdquo NNSA SSAP Symposium 2019 (won best poster)
37 T J Smith SM Miller P C Campbell N M Jordan M D Johnston G R Laity and R D McBride Vacuum Ultraviolet Spectroscopy for Power Flow Studies on
the 1 MA 100 ns MAIZE LTD Z Fundamental Science Workshop August 2019
38 S V R Rocco J T Banasek W M Potter B R Kusse and D A Hammer Examining energy partitioning in gas-puff z-pinches using Thomson scattering APS-DPP
Portland OR November 2018
39 S Rocco J Banasek W M Potter E Lavine and D Hammer Investigating energy partitioning in gas-puff z-pinches using Thomson scattering Weizmann
Institute Rohovot Israel November 2018
40 S V R Rocco J T Banasek W M Potter E S Lavine and D A Hammer Thomson Scattering as a Tool for Differentiating Sources of Spatial Velocity
Distributions in Gas-Puff Z-Pinches Laboratory of Laser Energetics Rochester NY August 2019
41 C Chen E S Lavine J B Greenly J T Blanchard B R Kusse Auto-magnetizing Mirror Liner Design for Wire Plasma Confinement Experiment UCSD-
HEDS Summer School La Jolla CA July 2019
42 J Angel J Greenly W Potter J Banasek and D Hammer Zeeman Spectroscopic Determination of Magnetic Field in Magnetized Plasma Expanding into
Vacuum UCSD-HEDS Summer School San Diego CA July 2019
43 A T Elshafiey I N Tilikin S A Pikuz T A Shelkovenko D A Hammer Time- and Space-Resolved studies of X-ray Emission from Hybrid X-pinch Plasmas APS-
DPP Portland OR November 2018
44 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Hybrid X-pinch Optimization APS-DPP Fort Lauderdale FL October 2019
45 A T Elshafiey J E Musk S A Pikuz T A Shelkovenko D A Hammer Optimizing Micropinches Produced by Hybrid X-pinches for High Time Resolution X-ray
Spectroscopy IEEE-ICOPS Orlando FL June 2019
46 N Qi J T Banasek S V Rocco E S Lavine W M Potter J B Greenly D A Hammer and B R Kusse Zeeman Spectroscopy Studies in Ar Gas Puff Z-Pinches on
1-MA COBRA IEEE-ICOPS Orlando FL June 24 2019
47 J Hamilton W Farmer M Sherlock and C E Seyler Modelling Thermal Conductivity in a Plasma using Higher-Moment Equations with PERSEUS LLNL Summer
Student Poster Symposium Livermore CA Aug 2019
48 E Sander Lavine S V Rocco J T Banasek W Potter T Hentschel N Qi J Greenly D A Hammer B R Kusse Implosion Dynamics and Magneto-Rayleigh-Taylor
Instability in Gas-Puff Z-Pinch Experiments at 1 MA PPPS Orlando Fl June 2019
49 E Sander Lavine S V Rocco J T Banasek Niansheng Qi B R Kusse and D A Hammer Shock Dynamics and Magneto-Rayleigh-Taylor Instability in Gas-Puff Z-
pinch Experiments APS-DPP Portland OR November 2018
50 J Hamilton and CE Seyler Thermoelectric Transport with an 8-Moment Plasma Model in PERSEUS APS-DPP Portland OR November 2018
51 TR Schmidt M Gilmore and E Schamiloglu Millimeter-wave and Near-infrared radiometry and collective Thomson scattering for studies of power balance in
COBRA gas puff pinch plasmas IEEE-ICOPS and PPPS June 23 ndash 28 Orlando FL 2019
51 Contributed talksposters
