Presentation is loading. Please wait.

Presentation is loading. Please wait.

Nu Xu1/20STAR Regional Meeting, VECC, India, November, 2008 STAR Experiment STAR at RHIC Nu Xu Lawrence Berkeley National Laboratory.

Published byElmer Blair Modified over 9 years ago

Similar presentations

Presentation on theme: "Nu Xu1/20STAR Regional Meeting, VECC, India, November, 2008 STAR Experiment STAR at RHIC Nu Xu Lawrence Berkeley National Laboratory."— Presentation transcript:

1 Nu Xu1/20STAR Regional Meeting, VECC, India, November, 2008 STAR Experiment STAR at RHIC Nu Xu Lawrence Berkeley National Laboratory

2 Nu Xu2/20STAR Regional Meeting, VECC, India, November, 2008 Outline 1)Introduction 2) STAR Physics Program - Physics working group - Upgrade programs - Run plan for 2009 – 2013* * As prepared in May 2008 3) Summary and Questions

3 Nu Xu3/20STAR Regional Meeting, VECC, India, November, 2008 - Identify and study the property of matter (EOS) with partonic degrees of freedom. - Explore the QCD phase diagram. - Study the origin of spin in p. - Investigate the physics at small-x, gluon-rich region. Physics Goals at RHIC RHIC Au+Au, Cu+Cu, d+Au, p+p at 200 – 5 GeV Polarized p+p at 200 & 500 GeV p+p, d+Au pp2pp

4 Nu Xu4/20STAR Regional Meeting, VECC, India, November, 2008 STAR Physics Focus 1) At 200 GeV top energy - Study medium properties, EoS - pQCD in hot and dense medium 2) RHIC beam energy scan - Search for critical point - Chiral symmetry restoration Polarized spin program - Study proton intrinsic properties Forward program - Study low-x properties, search for CGC - Study elastic (inelastic) processes (pp2pp) - Investigate gluonic exchanges

5 Nu Xu5/20STAR Regional Meeting, VECC, India, November, 2008 STAR Physics Working Groups 1)Spin:g contribution to spin structure 2)UPC: UPC, pp2pp 3)Heavy Flavor:c-, b-quark hadrons 4)Light Flavor Spectra: u-, d-, s-quark hadrons, di-leptons, photons 5)Bulk Correlations:v 1, v 2, correlations/fluctuations 6)Jet Correlations: high-p T triggered correlations

6 Nu Xu6/20STAR Regional Meeting, VECC, India, November, 2008 STAR Detector MRPC ToF barrel 100% ready for run 10 RPSD PMD FPD FMSFMS EMC barrel EMC End Cap DAQ1000 100% ready for run 9 Complete Ongoing R&D TPC FTPC Full azimuthal particle identification! γ, e, π, ρ, K, K*, p, φ, Λ, Δ, Ξ, Ω, D, Λ C, J/ψ, Υ …

7 Nu Xu7/20STAR Regional Meeting, VECC, India, November, 2008 STAR DetectorMRPC ToF barrel 100% ready for run 10 RPSD PMD FPD FMSFMS EMC barrel EMC End Cap DAQ1000 FGT Completed Ongoing MTD R&D HFT TPC FHC

8 Nu Xu8/20STAR Regional Meeting, VECC, India, November, 2008 HFT TPC FGT STAR Detectors: Full 2π particle identification! EMC+EEMC+FMS (-1 ≤  ≤ 4) TOF DAQ1000

9 Nu Xu9/20STAR Regional Meeting, VECC, India, November, 2008 Particle Identification at STAR STAR TPC STAR ToF STAR EMC STAR HFT Neutral particles Strange Jets Heavy Quark hyperons Hadrons Multiple-fold correlations among the identified particles! e, μ π K p d TPC ToF TPC Log 10 (p)

10 Nu Xu10/20STAR Regional Meeting, VECC, India, November, 2008 Particle Identification (ii) Reconstruct particles in full azimuthal acceptance of STAR! Charm Bottom

11 Nu Xu11/20STAR Regional Meeting, VECC, India, November, 2008 9.2 GeV Collider Acceptance √s NN 6 GeV 17 GeV √s NN = 9.2 GeV Au+Au Collisions at RHIC Fix-target Mode NA49 Collider Mode STAR

12 Nu Xu12/20STAR Regional Meeting, VECC, India, November, 2008 sQGP and the QCD Phase Diagram In 200 GeV Au+Au collisions at RHIC, strongly interacting matter formed: - Jet energy loss: R AA - Strong collectivity: v 0, v 1, v 2 - Hadronization via coalescence: n q -scaling Questions: Is thermalization reached at RHIC? - Systematic analysis with dN/dp T and dv 2 /dp T results… - Heavy quark measurements When (at which energy) does this transition happen? What does the QCD phase diagram look like? - RHIC Beam Energy Scan

13 Nu Xu13/20STAR Regional Meeting, VECC, India, November, 2008 Quark Masses 1)Higgs mass: electro-weak symmetry breaking. (current quark mass) 2)QCD mass: Chiral symmetry breaking. (constituent quark mass) éNew mass scale compared to the excitation of the system. éImportant tool for studying properties of the hot/dense medium at RHIC. éTest pQCD predictions at RHIC. Total quark mass (MeV)

14 Nu Xu14/20STAR Regional Meeting, VECC, India, November, 2008 Charm Hadron v 2 and R AA - 200 GeV Au+Au m.b. collisions (500M events). - Charm hadron collectivity  drag/diffusion constants  Medium properties! - 200 GeV Au+Au m.b. collisions (|y|<0.5 500M events) - Charm hadron R AA  - Energy loss mechanism! - QCD in dense medium!

15 Nu Xu15/20STAR Regional Meeting, VECC, India, November, 2008 The QCD Phase Diagram - LGT prediction on the transition temperature, T C ~ 170 MeV. - LGT calculation, universality, and models point to the existence of the critical point on the QCD phase diagram* at finite baryon chemical potential. - Experimental evidence for either the critical point or 1 st order transition is important for our knowledge of the QCD phase diagram*. * Thermalization is assumed Stephanov, Rajagopal, and Shuryak, PRL 81, 4816(98) Rajagopal, PR D61, 105017 (00)http://www.er.doe.gov/np/nsac/docs/Nuclear- Science.Low-Res.pdfhttp://www.er.doe.gov/np/nsac/docs/Nuclear- Science.Low-Res.pdf STAR’s plan: run10: RHIC Beam Energy Scan run11: Heavy Quark measurements

16 Nu Xu16/20STAR Regional Meeting, VECC, India, November, 2008 Au + Au Collisions at 9.2 GeV 1)~ 3500 collisions collected 2)Determine Luminosity 3)STAR has preliminary results on: Particle identification in TPC; charged multiplicity,  -  interferometry, particle spectra and ratios; v 1 and v 2 PID will be further significantly extended using full TOF. (Lokesh SQM08)

17 Nu Xu17/20STAR Regional Meeting, VECC, India, November, 2008 Run 9: 25 Cryo-week (scenario I) STAR priorities for Runs 9 and 10: (1)200 GeV longitudinally polarized p+p -  g(x ) (2) Beam energy scan down to  s NN ~ 5-6 GeV - Search for the QCD critical point ** C-AD transverse stochastic cooling test important! **

18 Nu Xu18/20STAR Regional Meeting, VECC, India, November, 2008 Runs 11 - 13 (30 cryo-week/yr) Run 11: (i) 1 st measurement of flavor dependence of sea q/anti-q polarization in the proton at  s = 500 GeV p+p collisions (ii) HFT engineering prototyping in  s NN = 200 GeV U+U collisions Run 12: Anticipating RHIC-II high luminosity (i) 1 st HFT physics measurements of charm hadron v 2 (p T ) and R CP (p T ) in  s NN = 200 GeV Au+Au collisions (ii) Focused energy-scan in the search for the QCD critical point. Prior accelerator development is crucial at  s NN = 5-6 GeV (iii) gamma-jet and quarkonia states measurements Run 13: (i) HFT physics reference measurement of charm hadron spectra in  s = 200 GeV pp collisions; complete remaining  s = 200 GeV spin milestones. (ii) Measurement of the x dependence of W production at  s = 500 GeV FGT HFT

19 Nu Xu19/20STAR Regional Meeting, VECC, India, November, 2008 Run 09: p+p collisions Starts on Feb. 2, 2009 500 GeV p+p collisions - total of 10 cryo-weeks => ends on April 5 th 5 weeks at 500 GeV - IF sufficient fy09 funds arrives total of 22 cryo-weeks => 4 weeks at 500 GeV plus 11-12 weeks at 200 GeV longitudinally polarized p+p collisions to measure  g(x) at a FoM: 6.5 pb -1 Run 06 Run 09 de Florian et al, arXiv: 0804.0422

20 Nu Xu20/20STAR Regional Meeting, VECC, India, November, 2008 Summary STAR collaboration and its physics program are strong: - more groups join in - best positioned for Exploring the QCD phase diagram - best equipped for  g measurements at the highest energy polarized proton collider - Excellent for precision measurements and great potential for new discoveries Complementary to ALICE at LHC at higher energy Complementary to CBM at FAIR at lower energy Problems: (1) Stable funding for upgrades and beam time (2) Need more collaborators to work on detector

Download ppt "Nu Xu1/20STAR Regional Meeting, VECC, India, November, 2008 STAR Experiment STAR at RHIC Nu Xu Lawrence Berkeley National Laboratory."

Similar presentations

Mass, Quark-number, Energy Dependence of v 2 and v 4 in Relativistic Nucleus- Nucleus Collisions Yan Lu University of Science and Technology of China Many.

Mass, Quark-number, Energy Dependence of v 2 and v 4 in Relativistic Nucleus- Nucleus Collisions Yan Lu University of Science and Technology of China Many.
Explore QCD Emerging Property

Explore QCD Emerging Property
The Physics of HFT the Heavy Flavor Tracker at STAR Spiros Margetis Kent State University, USA Excited QCD 2010.

The Physics of HFT the Heavy Flavor Tracker at STAR Spiros Margetis Kent State University, USA Excited QCD 2010.
The Heavy Flavor Tracker (HFT) The Silicon Vertex Upgrade of RHIC Spiros Margetis Kent State University, USA Excited QCD 2010, Slovakia.

The Heavy Flavor Tracker (HFT) The Silicon Vertex Upgrade of RHIC Spiros Margetis Kent State University, USA Excited QCD 2010, Slovakia.
Heavy Flavor Physics in HIC with STAR Heavy Flavor Tracker Yifei Zhang (for the STAR HFT Group) Hirschegg 2010, Austria Outline:  Physics motivation 

Heavy Flavor Physics in HIC with STAR Heavy Flavor Tracker Yifei Zhang (for the STAR HFT Group) Hirschegg 2010, Austria Outline:  Physics motivation 
ISMD’05, Kromeriz, Aug 09  15, 2005 1 Heavy  Flavor (c,b) Collectivity – Light  Flavor (u,d,s) Thermalization at RHIC Kai Schweda, University of Heidelberg.

ISMD’05, Kromeriz, Aug 09  15, Heavy  Flavor (c,b) Collectivity – Light  Flavor (u,d,s) Thermalization at RHIC Kai Schweda, University of Heidelberg.
Nu Xu1/32“Critical Point and Onset of De-confinement”, 23-29 August, 2010, JINR, Dubna High-Energy Nuclear Collisions and the QCD Phase Structure Nu Xu.

Nu Xu1/32“Critical Point and Onset of De-confinement”, August, 2010, JINR, Dubna High-Energy Nuclear Collisions and the QCD Phase Structure Nu Xu.
Relativistic Heavy-Ion Collisions: Recent Results from RHIC David Hardtke LBNL.

Relativistic Heavy-Ion Collisions: Recent Results from RHIC David Hardtke LBNL.
DNP03, Tucson, Oct 29, 2003 1 Kai Schweda Lawrence Berkeley National Laboratory for the STAR collaboration Hadron Yields, Hadrochemistry, and Hadronization.

DNP03, Tucson, Oct 29, Kai Schweda Lawrence Berkeley National Laboratory for the STAR collaboration Hadron Yields, Hadrochemistry, and Hadronization.
03/14/2006WWND2006 at La Jolla1 Identified baryon and meson spectra at intermediate and high p T in 200 GeV Au+Au Collisions Outline: Motivation Intermediate.

03/14/2006WWND2006 at La Jolla1 Identified baryon and meson spectra at intermediate and high p T in 200 GeV Au+Au Collisions Outline: Motivation Intermediate.
4/1/2010MRPC workshop at USTC, Lijuan Ruan (BNL)1 STAR di-lepton measurements Outline: Motivation and Introduction Results from 200 GeV p+p collisions.

4/1/2010MRPC workshop at USTC, Lijuan Ruan (BNL)1 STAR di-lepton measurements Outline: Motivation and Introduction Results from 200 GeV p+p collisions.
Nu XuInternational Conference on Strangeness in Quark Matter, UCLA, March 26 - 31, 20061/20 Search for Partonic EoS in High-Energy Nuclear Collisions Nu.

Nu XuInternational Conference on Strangeness in Quark Matter, UCLA, March , 20061/20 Search for Partonic EoS in High-Energy Nuclear Collisions Nu.
5-12 April 2008 Winter Workshop on Nuclear Dynamics STAR Particle production at RHIC Aneta Iordanova for the STAR collaboration.

5-12 April 2008 Winter Workshop on Nuclear Dynamics STAR Particle production at RHIC Aneta Iordanova for the STAR collaboration.
Heavy Ion Physics in Future -- Dense Matter Physics & Critical Point Search Nu Xu Nuclear Science Division Lawrence Berkeley National Laboratory Many Thanks.

Heavy Ion Physics in Future -- Dense Matter Physics & Critical Point Search Nu Xu Nuclear Science Division Lawrence Berkeley National Laboratory Many Thanks.
DPG spring meeting, Tübingen, March 2003 1 Kai Schweda Lawrence Berkeley National Laboratory for the STAR collaboration Recent results from STAR at RHIC.

DPG spring meeting, Tübingen, March Kai Schweda Lawrence Berkeley National Laboratory for the STAR collaboration Recent results from STAR at RHIC.
Nu Xu1/17STAR Regional Meeting, Warsaw University of Technology, November 5 th, 2012, Warsaw STAR November 5, 2012 Status of STAR Experiment at RHIC Study.

Nu Xu1/17STAR Regional Meeting, Warsaw University of Technology, November 5 th, 2012, Warsaw STAR November 5, 2012 Status of STAR Experiment at RHIC Study.
STAR Physics Program at RHIC Nu Xu Nuclear Science Division Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

STAR Physics Program at RHIC Nu Xu Nuclear Science Division Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
QCD Phase Boundary and the Critical Point B. Mohanty (1), X.F. Luo (2,3), H.G. Ritter (3) and N. Xu (3) (1)VECC, Kolkata, 700064, India (2)Modern Physics.

QCD Phase Boundary and the Critical Point B. Mohanty (1), X.F. Luo (2,3), H.G. Ritter (3) and N. Xu (3) (1)VECC, Kolkata, , India (2)Modern Physics.
ICPAQGP 2010, Goa, India High-Energy Nuclear Collisions and QCD Phase Structure Nu Xu (1) Nuclear Science Division, Lawrence Berkeley National Laboratory,

ICPAQGP 2010, Goa, India High-Energy Nuclear Collisions and QCD Phase Structure Nu Xu (1) Nuclear Science Division, Lawrence Berkeley National Laboratory,
Recent Results from STAR: Correlations James C. Dunlop Brookhaven National Laboratory for the STAR Collaboration March 20, 2009 1 J.C. Dunlop, Moriond.

Recent Results from STAR: Correlations James C. Dunlop Brookhaven National Laboratory for the STAR Collaboration March 20, J.C. Dunlop, Moriond.

Similar presentations

Ads by Google