LANL Heavy Ion, Cold Nuclear Matter & Spin Program Outline

LANLLANL Nuclear Nuclear PhysicsPhysics

Heavy Ion, Cold Nuclear Matter & Heavy Ion, Cold Nuclear Matter & Spin Physics ProgramsSpin Physics Programs

Mike LeitchPhysics Division, Los Alamos National Laboratory


LANL Heavy Ion, Cold Nuclear Matter & Spin ProgramOutline

• Personal, activities, collaborators• Physics highlights

– dAu & AA J/’s– 1st Upsilons at RHIC– J/ spin asymmetry in polarized p+p– Hadron correlations– CMS/LHC gamma-jet studies

• Technical accomplishments– Muon tracker operations– Forward Silicon Vertex detector upgrade

• Future goals• Budget


LANL Heavy Ion, Cold Nuclear Matter & Spin Program Current Personnel

Physics Analysis Brooks, Butsyk(PD), Camacho(PD), Constantin(PD), Kunde, Lee,

Leitch, Liu, McGaughey, Miranov(PD), Purwar(PD), van HeckeForward Silicon Vertex Upgrade*

add Kapustinsky, Sondheim, BoissevainCMS Heavy Ion* Constantin(PD), Kunde, Miranov(PD)Theory

Ivan Vitev(Oppenheimer PD)*

* with LDRD support


LANL Heavy Ion, Cold Nuclear Matter & Spin Program Major Collaborators

Muon Spectrometers in PHENIXLANL, ORNL, Ecole Polytechnique ,Saclay,

Riken, Kyoto, Korean Universities,University of Colorado, UNM, NMSU

Forward Si Vertex (FVTX) PHENIX upgradeLANL, BNL, Charles University(Prague),

Columbia, FNAL, HYTEC, Inc.Iowa State University,

New Mexico State UniversityUniversity of New Mexico


LANL Heavy Ion, Cold Nuclear Matter & Spin Program PHENIX Activities

Physics working groups: all, Brooks (heavy-quark physics convener & speakers bureau)Paper writing: Brooks, Constantin, Kunde, Leitch, Liu, McGaughey, PurwarInternal paper review committee: Lee, Leitch, McGaughey, van Hecke

Muon Tracking operations & repairs: Leitch, Butsyk, Lee, Liu, Sondheim, Purwar… Period coordinator: Leitch (run03,04,05,06)

FVTX Upgrade proposal: Brooks, Kunde, Lee, Leitch, Liu, McGaughey, van HeckeIntegration & Engineering: Sondheim, Boissevain

Detector Council Members: van Hecke(past MVD), Brooks(past muon), Leitch(past muon),McGaughey (past muon) Subsystem manager: Lee (muon mechanical)

Executive Council: Leitch (past)PHENIX Physics Impact Panel for QM05 – LeitchConvenor of RHIC II pA/Forward physics group – Leitch

NSAC Heavy Ion Review: Barnes


LANL Heavy Ion, Cold Nuclear Matter & Spin Program PHENIX Activities

Organized Annual Muon Workshop in Santa Fe in June, 3 days including invited theory talks

2003, 2004, 2005 ~50+ attendees

Organized Muon Software Workshop in BNL February 2005

Organized FVTX workshop at LANL on triggering

PANIC organizing Committees and operations + LHC Panic satellite workshop

APS Hadron Physics Topical Group Executive Committee - Leitch

Host for students, postdocs, staff from elsewhere for physics analysis:

NMSU - Xiaorong Wang, Han Liu, Hisham Al-Bathaineh (in residence with LANL group)

Korea U. & Yonsei - Minjung Kweon, Woojin Park, DongJo Kim, MinKung Lee, BeomSu Chang

Saclay - Hugo Pereria; UNM - Imran Younis; UCR - Vasili Dzhordzhadze

UIC - Miroslav Mihaylov; NMSU -Alberto Canabal-Rey

Many former postdocs or staff now contributing elsewhere – John Sullivan, Jane Burward-Hoy, Ben Norman (LANL); David Silvermyr (ORNL); Rusty Towell (ACU); Paul Reimer (ANL); Shekhar Mishra (FNAL) to name a few.


LANL Heavy Ion, Cold Nuclear Matter & Spin Program Applications & Spinoffs

Muon Radiography Front End Preamplifier:

Using analog electronics expertise developed for the PHENIX muon spectrometer, we designed a preamplifier circuit for the Muon Radiography program at LANL. This low noise, differential output amplifier solved a crosstalk problem in their front-end circuitry, as well as providing reduced detection threshold in their drift tubes. 128 channels have been installed and are performing well. Hundreds more channels are either under construction or planned for the near future.

Low Cost Radiation Monitor for Remote Borders:

Based upon our experience with scintillation detectors and low noise electronics, we wrote a proposal to DNDO/DHS for the development of a low cost gamma-ray and neutron detection system which could instrument long sections of the US border. The detector would consist of long tubes of liquid scintillator, whose light would be detected using vacuum photo-diodes and processed with low-noise current integrators. $600K of first year funding was requested, with a decision expected in early spring of 2006.


LANL Heavy Ion, Cold Nuclear Matter & Spin Program Spin Physics at RHIC with Muons

1st measurement of single-spin asymmetry for J/ in polarized p+p (M. Liu)

Only LANL is working on spin measurements with muons


CNM calculations with weak shadowing and absorption – need more precise dAu data.

AA suppression is somewhat stronger than CNM calculations predict

0 mb

5 mb

1 mb

3 mb

R. Vogt CNM calcs.

Low x2 ~ 0.003(shadowing region)

Also developing case for RHIC-II dA physics

200 GeV d+Au J/

LANL Heavy Ion, Cold Nuclear Matter & Spin Program Cold Nuclear Matter (CNM) Suppression of J/

(1st RHIC dAu J/ PRL - Leitch)


1st Upsilons at RHIC from ~3pb-1

2005 p+p (Leitch, Butsyk)

1st comprehensive AA J/ results from RHIC!(Brooks and many others)• regeneration compensates for QGP screening• OR sequential screening – the J/ never dissolved (as recent recent lattice-QCD calculations suggest)

screening

regeneration

total

LANL Heavy Ion, Cold Nuclear Matter & Spin Program Regeneration or Screening – That is the Question?


Trigger on one leading hadron, and look for associated particles, “near” and “away” Is jet production modified in medium?Yes -- Away-side shape modification: broadening - pp, dAu, peripheral AuAu splitting - central and mid-central AuAu (and not more broadening)

AuAu 0-10% centralityAuAu 30-40% centralityAuAu 60-92% centrality

p-pd-Au

Δφ [rad]

PHENIX Preliminary

D D

Dijet event in a hot QCD medium

pTrigger = 2-3 GeVpAssociated = 1-2 GeV

LANL Heavy Ion, Cold Nuclear Matter & Spin Program Interaction of Hadronic Dijets with the QGP

Splitting of away-side jets (Constantin)


h

pair*l+

L-

qq

g

q*

s

jet

In-medium fragmentation functions Dqh(z,Q2) via Virtual-photon/Z0 tagged jet

• Could give 1st direct measurement of energy-loss• Virtual μμ avoids π0 backgrounds

CMS Simulation

Large CMS Acceptance is Crucial

G.J.Kunde P.Constantin M.Mihaylov C.Mironov

LANL-LDRD-ER FY06-08

Other LHC interests: Quarkonia and pA collisions in the small-x gluon saturation region

LANL Heavy Ion, Cold Nuclear Matter & Spin Program LANL in CMS at the Large Hadron Collider (LHC)

(Kunde, Constantin, Mironov, Mihaylov)


Au Au

Continuing operations and repairs of muon tracking systemslead along with Ecole Polytechnique

LANL Heavy Ion, Cold Nuclear Matter & Spin Program The PHENIX Muon Spectrometers


Enable a complete onia + open-heavy flavor physics picture• open-charm constraints on J/ regeneration• consistent gluon saturation picture from onia and charm/beauty• gluon polarization via charm & beauty over broad x range

Identification of forward/backward detached vertices:• B J/ X & B,D μ at large pT

• rejection of π & K decays to clean single & pair spectra• improved J/, ’ mass resolution/separation

Proposal: https://www.phenix.bnl.gov/phenix/WWW/publish/leitch/fvtx/fvtx_xx.doc

Detector/project synopsis (Manager M. Brooks):• <200μm zvtx resolution; <1.5% central AuAu occupancy• 4 mini-strip silicon umbrellas in front of each muon arm• fast trigger to enrich & enable timely physics• $4.5M cost with completion target end FY10

LANL Heavy Ion, Cold Nuclear Matter & Spin Program Forward Silicon Vertex (FVTX) Upgrade Proposal

(will be sent to DOE before March retreat)


• Continue to examine the suppression/enhancement of J/ production in A+A collisions in the light of cold nuclear matter effects from d+Au and various theoretical pictures.

• Prepare & push for new Au+Au and d+Au runs to obtain more precise data to allow disentangling the physics of J/ suppression in both d+A and A+A .

• Extract open charm production in Au+Au collisions via single muons to help disentangle J/ suppression due to the QGP and small-x physics from nuclear medium effects.

• Study spin physics measurements (gluon polarization via J/ and open charm asymmetry measurements) in polarized p-p collisions & look for 1st W’s in run6 500 GeV pp run.

• Submit proposal for forward silicon vertex detector upgrade and continue R+D towards a 1st prototype and the full detector.

• Continue the process of establishing a role in the LHC heavy ion program with study of gamma-jet correlations & p+A onia physics.

LANL Heavy Ion, Cold Nuclear Matter & Spin Program Research Goals, FY06 and beyond


Spin physics from muons at RHIC is now coming and LANL is largely alone in leading this effort

• need to add a new young energetic physicist to help Liu and LANL push this physics

LANL leading major new effort for FVTX upgrade to PHENIX• we cannot shut down our physics efforts while we do this like largely happened during the muon tracker construction!• need to maintain strong physics while building FVTX

Lee probably retiring or phasing out over next few years• need replacement with superb detector and management skills in order to assure success in the FVTX project

LANL Heavy Ion, Cold Nuclear Matter & Spin Program Summary of Strategy for Staffing and Effort


Year FY06 FY07 FY08

presidents -5% flat +3.5% proposed

KB02+KB01 $2132+896k $2320+1100k 2204+1045 2320+1100 2401+1139 2552+1210

Budget $3028k $3420k $3249k $3420k $3540k $3762k

FTE 5.8+3.2PD 6.8+3.2PD 5.8+3.2PD 6.8+3.2PD 7.1+3.2PD 7.5+3.2PD

J/, p+p,d+A,A+A

subcritical AuAu

good subcritical marginal good

single-μ c,b quarks

too thin good subcritical marginal good

gluon polarization

good for beginning

good subcritical marginal goodfully

engaged

jet correlations

small effort

FVTXMajor new

effort

CMS/LHC LDRD add pA?

no newstaff

M&Stight

maintainphysics & FVTX

robust FVTX+ more LHC

LANL Heavy Ion, Cold Nuclear Matter & Spin Program Resource Distribution & Comments – FY08


Activity FY06 FY07

KB01 KB02 KB01 KB02

J/, - p+p,d+A,A+A 0.8 + 0.5 PD 0.5 + 0.5 PD 1 + 0.5 PD 0.7 + 0.5 PD

single-μ - c,b quarks 0.8 + 0.5 PD 1 + 0.5 PD

gluon polarization 0.9 + 0.5 PD 1.3 + 0.5 PD

jet correlations 0.25 + 0.5 PD 0.25 + 0.5 PD

FVTX 0.2 2.35 + 0.75 PD 0.2 2.35 + 0.75 PD

CMS/LHC LDRD LDRD

KB01 or KB02 1.9 + 1 PD 3.9 + 2.2 PD 2.5 + 1 PD 4.3 + 2.2 PD

total 5.8 + 3.2 PD 6.8 + 3.2 PD

With LDRD for FVTX also

LANL Heavy Ion, Cold Nuclear Matter & Spin Program Resource Distribution & approximate

KB01, KB02 FTE Breakdown


Spin physics from muons at RHIC is now coming and LANL is largely alone in leading this effort

• need to add a new young energetic physicist to help Liu and LANL push this physics

LANL leading major new effort for FVTX upgrade to PHENIX• we cannot shut down our physics efforts while we do this like largely happened during the muon tracker construction!• need to maintain strong physics while building FVTX

Lee probably retiring or phasing out over next few years• need replacement with superb detector and management skills in order to assure success in the FVTX project

LANL Heavy Ion, Cold Nuclear Matter & Spin Program Summary of Strategy for Staffing and Effort


BACKUP SLIDESBACKUP SLIDES


FY FY08 FY09 FY10 FY11 FY12

KB01+KB02 1210+2552 1295+2731 1385+2922 1482+3126 1586+3345

+FTE +1.75 +2.25 +2.75 +3.5 +4.25

evolution Robust HI, CNM, Spin

+ FVTX, some LHC

Ramp up Spin, LHC Add J-

PARC?

Out-year Plan for “proposed” (+10%/yr) Scenario

• loss of present LDRD projects (DR & ER) after FY08• unlikely to get new DR but ER(s) possible, e.g. for J-PARC or E906/FNAL

• construction funding for FVTX HOPEFULLY will start flowing in FY08• in out years proposed funding levels, besides giving robust heavy-ion, cold nuclear matter, and spin program at RHIC; could allow:

• substantial program at LHC (heavy ions and pA)• J-PARC or E906 program started through LDRD-ER


Heavy Quarks as a Probe of a New State of MatterPrincipal Investigators:

Patrick McGaughey, Emil Mottola

Additional Investigators:

Melynda Brooks, Rajan Gupta, Gerd Kunde, David Lee, Ivan Vitev,

Abstract

Intriguing evidence that a new state of matter, the quark-gluon plasma (QGP), is formed in collisions of ultra-relativistic heavy ions has been presented during the past year by physicists working at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory. We propose to develop a unique capability at RHIC for the direct identification of heavy quarks which will be used to accurately determine the properties of this new state of matter produced in central collisions,. We will construct a Silicon micro-vertex detector (SVD) covering the forward collision region, which will provide the world’s best determination of heavy quarks in the high multiplicity environment of nuclear collisions. We will develop novel theoretical and computational tools to model and interpret the data, with the goal of establishing the nature of the strongly interacting non-equilibrium plasma .

Los Alamos RHIC Program LDRD-DR Proposal


There are strong indications that a new state of matter is produced in heavy ion collisions at relativistic energies. It is called the Quark Gluon Plasma and appears to have the properties of a nearly ideal liquid. Current plasma probes include jets, which are well understood from elementary collisions. Analysis of jets inserted into the medium created by heavy ion collisions contributes to the claim of producing the Quark Gluon Plasma. However, these jet studies have thus far been limited to studying only the leading charged hadrons, which strongly couple to the medium. This approach entails several complications, e.g. not even the initial energy of the jet is known, but rather it has to be inferred from models. The qualitative new approach proposed in this ER is the study of jets tagged by lepton pairs. The lepton pair does not strongly interact and escapes the collision undisturbed while the opposite side jet passes through the quark gluon matter that is produced. The recoiling lepton pair will carry information about the kinematical features of the jet, and will thus be the first ever direct measurement that isolates in-medium effects such as jet energy loss and fragmentation function modification. We propose joining the CMS (Compact Muon Solenoid) experiment at the LHC (Large Hadron Collider) at CERN - the only place that this physics can be done. The result of this ER will be a complete study of the proposed jet-tagging via simulations and the analysis of the first real LHC nucleus-nucleus data in 2008. The physics result obtained will be the first direct measurement of the plasma opacity.

LANL LDRD-ER, “A New Probe for the Quark Gluon Plasma”Kunde, Constantin, (Norman), Mihaylov, Mironov


Proposal for a Forward Silicon Vertex Tracker (FVTX) for the PHENIX ExperimentK.A. Drees, R. Pak

Brookhaven National Laboratory, Upton NY USAM. Finger, M. Finger

Charles University, Prague, Czech RepublicJ. Klaus

Czech Technical University, Prague, Czech RepublicP. Mikes, J. Popule, L. Tomasek, M. Tomasek, V. Vrba

Institute of Physics, Academy of Sciences, Prague, Czech RepublicB. Cole, E. Mannel, D. Winter, W. Zajc

Columbia University, NewYork, NYJ.C. Hill, J.G. Lajoie, C.A. Ogilvie, A. Lebedev, H. Pei, G.Skank,

A. Semenov, G. Sleege, F. Wei Iowa State University, Ames, IA 56011, USA

N. Saito, M. Togawa, M. WagnerKyoto University, Kyoto 606, Japan

J.G. Boissevain, M.L. Brooks, S. Butsyk, H.W. van Hecke, J. Kapustinsky, G.J. Kunde, D.M. Lee,M.J. Leitch, M.X. Liu, P.L. McGaughey, A.K. Purwar, W.E. Sondheim

Los Alamos National Laboratory, Los Alamos, NM 87545, USAHisham Albataineh, G. Kyle, H. Liu, S. Pate, X.R. Wang

New Mexico State University, Las Cruces, NM, USAB. Bassalleck, D.E. Fields, M. Hoeferkamp, M. Malik, J. Turner

University of New Mexico, Albuquerque, NM, USA

Also Interested – ANL, Ecole Poly, FSU, Korea U., Saclay, Yonsei

https://www.phenix.bnl.gov/phenix/WWW/publish/leitch/fvtx/fvtx_9feb06.doc


• Cost– R&D - $360k LANL + $495k BNL– Construction - $3.56M + 27% contingency $4.52M– LANL/LDRD prototype - $1.25M/yr for 3 yrs (including theory

and includes $360k above R&D)

• Schedule– Installed & commissioning by end FY10– Construction start October 2007 (FY08)– R&D start January 2006

• Proposal schedule– PHENIX review Dec. 2005– BNL review ~ Jan 2005 March 2006– Submit to DOE for FY08 budget planning ~March 2006

FVTX Cost & Schedule Summary


0

500

1000

1500

2000

2500

FY06 FY07 FY08 FY09 FY10

Fiscal Year

$k Construction

R&D

FVTX Funding Profile


• Baseline: Lead-Lead collisions– “Early Pb Scheme” – much easier to achieve – for 2008 (and

2009?)• Allows study of performance limitations.

– “Nominal Pb Scheme” by 2009 (or 2010?) • Pb-Pb is perceived as posing the most difficult

accelerator physics problems

• Future “upgrades” not in Baseline: – p-Pb collisions under study

• Effects of revolution frequency difference at injection expected to be much weaker than at RHIC

– lighter ion-ion collisions (e.g. Ca, Ar, O, …) appear possible without major upgrades, to be studied.

from talk at PANIC05 Heavy-Ion LHC satellite meeting presented by Bolek Wyslouch

Heavy Ion Collisions - LHC Planning


Nucleon Sea Asymmetry & Parton Energy Loss at JPARC?(descendent of E866/NuSea at FNAL)

DRAFT LOI


1st measurement nuclear dependence in d+A of forward prompt (charm & beauty) muons at RHIC. Suppression at large rapidity (small-x shadowing region) and enhancement at negative rapidity. (M. Liu, X-R Wang)

Heavy Quarks with Single Muons


Azimuthal asymmetry v2 (elliptic flow) as function of pseudo rapidity & centrality for minimum bias A-A collisions at 200 GeV. The measurement from run4 with the MVD pad detectors is colored in magenta; the FVTX will cover the same range in pseudo rapidity. (The MVD is now removed, but the FVTX is, hopefully, coming.) [Norman, Kunde, van Hecke]

Flow with the MVD & anticipation of forward silicon upgrade


• World’s fastest chips (840 Mbit/sec), 0.25um CMOS, developed by FNAL.

• Hits are read out in real-time direct triggering.• Lowest power per pixel and lowest noise (90 uW, 220e-).• Large channel count per chip (up to 2816).• Our vertex detector is first to use this new technology.• Prototypes being tested at LANL and FNAL.

PrototypeSi StripDetector

FPIXReadoutChip

FVTX – Working in the lab with the FPIX Readout & 2 Sensors

Date post:	23-Jan-2016
Category:	Documents
Upload:	kairos
View:	38 times
Download:	0 times

LANL Heavy Ion, Cold Nuclear Matter & Spin Program Outline

Documents