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m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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MICE report
M. Apollonio – University of Oxford
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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Brunel A. Khan, P. Kyberd, J.J. Nebrensky
CCLRC Daresbury A. Moss, M. Poole
Glasgow F. J. P. Soler, K. Walaron
Lancaster & Cockcroft Accelerator Centre R. Seviour, M. Stables
Liverpool P. Cooke, R. Gamet
Imperial College London G. Barber, R. Beuselinck, P. Dornan, R. Flack, A. Jamdagni,
K. Long, T. Matsushita, D. R. Price, C. Rogers, J. Sedgbeer,
M. Takahashi
Oxford & John Adams Institute M. Apollonio, J. H. Cobb, P. Lau, W. Lau, S. Yang
CCLRC RAL D.E. Baynham, T.W. Bradshaw, M. Courthold, P. Drumm,
R. Edgecock, M. Hills, Y. Ivanyushenkov, A. Jones, W.J. Murray, C. Nelson, J.H. Rochford, K. Tilley, K. Walaron
Sheffield C. N. Booth, P. Hodgson, L. Howlett, R. Nicholson, P.J. Smith
The MICE-UK Collaboration
i-MICE = 38 institutions in UK, US, JP, China & Europe
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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Difference in oscillation ratesbetween conjugate channels:
a Neutrino FactoryStore ~20 GeV muons in a ring
decays and eDetectors at few x 1000 km
non zero then e
wrong sign muons at detector
ande e
Leptonic CP violation
Need to store 1021 muons / year
Muons are tertiary beams must ‘cool’ before acceleration
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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Cooling needed in order to reduce the volume of p.s. initially large due to
inherent production mechanisms and cope with physical apertures in the
acceleration stages
x ~ 10 cm, ~ 150+ mr large normalised emittance, n
12 2 2 2
1( )
x xn x p xp xm c
In 2D at a focus
Cooling is nothing but emittance reduction 2-10 x N in the accelerator
Highly advantageous for a NF, necessary in a -collider
Finite lifetime (2.2 s) prevents from using traditional
techniques ionization chooling
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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Section of Cooling Channel + Emittance measurements + PID
• Design, build, commission & operate realistic section of cooling channel• Measure performance in variety of operating modes & beam conditions
Results will inform the NF CDR Engineering is challenging
MICE in new 200 MeV/c muon beam at RAL
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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the principle of IONISATION COOLING is simple
Pass muons of ~200 MeV/c through absorbers reduce pt and pl RF replaces pl beam ‘cooled’
Emittance decreases exponentially:
dE----------------------------------------------
dXERFERF
Absorber RF Cavities
dE----------------------------------------------
dXERFERF
dE----------------------------------------------
dXERFERF
Absorber RF Cavities
dE/dX versus scattering (X0)
low Z absorber material
tight focus (low function)
2
2 30
0.014 GeV
2tn nd dE
dX E dX Em X
• Figure of Merit = X0 dE/dX H2 is best absorber material
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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the construction of an IONISATION COOLer is not …
MICE has been thought as a developing system 6 steps progressive developement 2 phases 1st funded, 2nd waiting for approvalOptimizing resources and allowing an ongoing knowledge of the device
PHASE I
PHASE II
I & II characterise beam
III control systematics
IV demonstrate cooling
V cooling + re-acceleration
VI full lattice section
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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PHASE I (progress)
hall, target, beam, tracker & PID (STEP 1)
spectrometer (STEP 2)
the beam is part of the system ...
expected beamOctober 2007
PID + Tracker
after few months
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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HALL & infrastructure
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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Need large emittance BEAM • target dips into ISIS halo pions muons• muons captured in SC solenoid (PSI Zurich) • beam transport tuneable 140 – 240 MeV/c• lead diffuser emittances of 2, 6, 10 () mm-rad
aim is 600 muons / 1 msec ‘spill’ @ 1Hz through MICE
extensively studied with linear optics codes + GEANT4 simulations
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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dipping target system titanium blade (1x10x35 mm) magnetic shuttle
target mechanism successfully installed on ISIS (end of October) [Sheffield] successful data taking particle production rates and beam profile (currently being analysed) 2 shifts at the beginning of November [logistics/detectors by RAL &Glasgow] a HW problem prevented a second data taking run in December future:
analyse datafurther develop control electronics
full power electronics provided by Daresbury successfully tested up to 20A, now being modified at Daresbury to allow running at higher currents.
stator
Loss versus time and depthEdge
of pipe
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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•PSI solenoid for capture & focusing [RAL]•Insulation OK•Cryogenics in situ (being installed)•Commission expected by Q1 ‘07
• design of the pion capture system [Liverpool]
Beamline Components: all magnets at RAL, detailed engineering
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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(mm
rad)
p (MeV/c)
1 6 10
240
200 TT
G4BL
TT
G4BL
TT
G4BL
140
beamline design [RAL, Brunel, IC, Glasgow…]
goal: tune optics for the (,p) matrix
TT
: T
ran
spo
rt &
Tur
tleG
4: G
4Be
amlin
e (in
cl n
ew
Ckv
1)
diffu
ser:
z-po
sitio
n ba
sica
lly d
efin
ed,
radi
us to
be
optim
ised
desi
gn o
f th
e di
ffus
erin
sert
ion
[Oxf
ord]
collimator to limit activity inTOF0
study of fringe field effects
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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each absorber contains 22 litres of Hydrogen
hydrogen stored in hydride beds – first bed delivered
R&D system being developed – mimic absorber functionality
+ use as test cryostat for absorbers & eventually for first absorber
safety reviews & ‘HAZOP’s of system inform design (in progress)
HYDROGEN SYSTEM (RAL ED)
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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spectrometersolenoid (US)
5 superconducting coils uniform 4T field over >1 m for sci-fi tracker
US (LBL) responsibility + engineering & FEA from Oxford
Contracts placed in June 2006
Delivery of first unit (to RAL) november 2007
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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Low mass Sci-Fi tracker inside
solenoid
5 planes x 3 views: 5th station
completed before christmas
checked manufactory procedure: OK
start 1st tracker production
14 station planned (10 + 4 spare)
on time for the first beam (fall 07)
350 micron fibres + VLPC readout
Cosmic ray tests with 3 planes
4-plane prototype tested at KEK
Light yield (~10pe) is OK
Production & QC expertise
gained
Data used as input to simulations
can measure to = 1/1000
SciFi Tracker (IC/Brunel/Liverpool/US/JP)
Initial Emittance (pi mm rad)
Cha
nge
in E
mitt
ance
(%
)
True emittance difference
Recons. emittance difference
Initial Emittance (pi mm rad)
Cha
nge
in E
mitt
ance
(%
)
True emittance difference
Recons. emittance difference
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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PID scope:
upstream: separation(residual in the beam)
TOF0 + TOF1 + CKOV
downstream: e/ separation(e from decay)
TOF2 + Calorimeter
upstream+downstreamTOF1+TOF2: define RF phase of muons (60 ps timing)Q4---5---6 Q7---8---9
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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PID: Time Of Flight (0,1,2) & Cerenkovbasic designs completed (october PID review)
TOF0 [Milan]:tested at Frascati (Jul 06)ready to be completed final decision on f.e.el. to be taken
TOF1: some components ready not ready to start(funds)
TOF2:conceived, but not ready to start
CKOV [US,Louvain] dual aerogel radiators aerogel tested @FNAL (summer ’06) reflector R&D (fall ’06) mech. assembly (may ’07) ready to install (summer ’07) funded
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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ecalorimeter [Rome III, Trieste, UniGe]
design needs to be finalized
KL e-identifier) Pb-SciFi front end (preshower a la KLOE) sci-fi & lead modules being presently built design for PMT B-shielding in progress tests in B-field soon
FEE prototype being tested at CERN funded at 80/90%
SW -identifier) sandwiched layers of scintillator design from UniGe (promising results from sim)
same R/O as KL not yet funded
availability of the entire system by fall 07 still in question
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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DAQDAQ Software Training started in CERN-ALICE group
The ALICE DAQ software framework, DATE, will provide the necessary
EventBuilder tool:
Subevents collected by different processors have to be synchronized and put
together before storage
Complete Flash ADC/BTF Data analysis: Nov 2006
DAQ Test bench including Event builder: Feb 2007
Order Hardware for Stage 1: March 2007
Move DDAQ system to RAL: July 2007
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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PHASE II (proposed)
Implement additional infrastructure required for cooling section
Install magnet PSUs / Expand water system / Incorporate modules into vacuum & control systems
Integrate ex-LBNL & CERN amplifiers into RF power system
Provide RF power distribution & splitters
Procure 6 TH116 tubes
Procure 2nd and 3rd Hydrogen systems
Management of engineering integration & installation
MICE experiment
Continue engineering oversight of integration of cooling channel & interfaces, diffuser….
MICE hall
Drawing management, define installation tolerances, acceptance tests, support structures, pressure vessel certification, safety ….
WP1 – Hall, Infrastructure, & Management of Installation & Integration
(ISIS / RAL-ED / DL / Oxford / Lancaster)
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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WP2 – FOCUS COIL MODULES (Oxford + RAL-ED)
Key components of cooling section
Two S/C coils inside warm-bore cryostat
focus beam at absorbers
Tightly integrated assemblies
Based on FS2 conceptual design
Significant evolution of design
B ~ 4T on axis; flips sign at centre
Large internal & external forces
~200 tons & ~70 tons
Cryocoolers used for coils & absorber
save O(£IM) on cryogenic system
470
mm
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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HYDROGEN ABSORBERS (JP/US)
Full size LH2 absorber
Tested with H2 and He Oxford design & FEA
of thin windowsAbsorber body
KEK test cryostat
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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RF – tests on 201.2 MHz unit (FNAL)
16 MV/m nominal gradient reached @ B=0
plans to test the cavity in the presence of B ~ 2T (ready to start)
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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LBNL – ICST Harbin Collaboration
The relevant design calculations have been done
Preliminary specifications have been written for the coupling magnet
Two designs existSingle coil as shown3 coil (distributed) design
ICST application for funds is being considered
Coupling Coils
ICST CC design
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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SOFTWARE …
Active software group with regular workshops
G4MICE for simulation, reconstruction & analysis – well developed
ICOOL (NF tracking code) expertise acquired
Specific fast code developed for beam optics
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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MAGNETICS (OXFORD & RAL-ED)
End
Coi
l 2Fields at cryocoolersShielding for PID PMTsShielding in Hall &
ISIS control room
Many magnetic calculations of entire system including
– Forces
– Stray fields
– Shielding
– Quench analysis for entire channel
m.apollonio UK Neutrino Factory meeting- RAL - (10/1/2007)
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the international MICE collaboration continues its work towards first beam on fall ’07 detector construction, test and commissioning
aiming at having all PHASE I commitments fulfilled DAQ complete simulation/analysis of MICE STEP VI in view
of PHASE II aware of funding problems which don’t appear as
insurmountable
SUMMARIZING…