Nu Xu 1/15STAR Collaboration Meeting, BNL, February 24 – March 1, 2013

February 27, 2013

Status of STAR - A report to the Council

Nu Xu

Nu Xu 2/15STAR Collaboration Meeting, BNL, February 24 – March 1, 2013

RHIC Physics Focus

Polarized p+p program - Study proton intrinsic properties

Forward program - Study low-x properties, initial condition, search for CGC - Study elastic and inelastic processes in pp2pp

1) At 200 GeV at RHIC - Study medium properties, EoS - pQCD in hot and dense medium

2) RHIC beam energy scan (BES) - Search for the QCD critical point - Chiral symmetry restoration

2020 - eRHIC(eSTAR)

Nu Xu 3/15STAR Collaboration Meeting, BNL, February 24 – March 1, 2013

2 TE RHIC, SPS

3

3 Large μB

NICA, FAIR

Exploring the QCD Phase Structure

1

1 Tini, TC

LHC, RHIC

2P

arto

nic

Mat

ter

Had

ron

ic M

atte

r

LHC+RHICsQGP properties

√sNN ~ few TeV

RHIC BES-IIQCD phase

structure and critical point √sNN ≤ 20 GeV

NICA/FAIRQCD phase structure

√sNN ≤ 12 GeV

Future eRHICCold nuclear

matter properties

e + ion collisions

Emergent properties of QCD matter

Nu Xu 4/15STAR Collaboration Meeting, BNL, February 24 – March 1, 2013

QCD Phase Diagram (2010)

LHC RHICeRHIC (EIC)

K. Fukushima and T. Hatsuda, Rept. Prog. Phys. 74, 014001(2011); arXiv: 1005.4814

Hot QCD Matter Cold QCD Matter

- Helicity structure of proton- PDF/NPDF at small-x region

HFTTPC

TOFBEMCMTD FGT EEMC

η = -1 η = 0 η = 1

STAR Detector System (2014)

Nu Xu 6/15STAR Collaboration Meeting, BNL, February 24 – March 1, 2013

Infrastructures for HFT

Nu Xu 7/15STAR Collaboration Meeting, BNL, February 24 – March 1, 2013

HFT at STAR

D-TubeKinematic Mounts

Sectors

Pixel Support Tube (PST)

Read-out

Nu Xu 8/15STAR Collaboration Meeting, BNL, February 24 – March 1, 20132/24/2013 8

MTD Installation

1) ~ 50% MTD has been installed2) Trigger setup in progress

Nu Xu 9/15STAR Collaboration Meeting, BNL, February 24 – March 1, 2013

Particle Identification at STAR

TPC

TOF

EMC

HFT

Neutral particles

e, μ

πK p d

TPC TOF TPC

Log10(p)

Multiple-fold correlations for the identified particles!

Hyperons & Hyper-nuclei

Jets

Heavy-flavor hadrons

MTD

High pT muonsJets & Correlations

Charged hadrons

Nu Xu 10/15STAR Collaboration Meeting, BNL, February 24 – March 1, 2013

STAR Detector Configurations

STAR: Large coverage, excellent PID, fast DAQ - detects nearly all particles produced at RHIC

- multiple fold correlation measurements

- Probes: bulk, penetrating, and bulk-penetrating

STAR: Perfect mid-y collider experiment

STAR: Expanding into forward rapidity regions

Period Detectors Physics

2001-2010 TPC u, d, s

2010 TPC + TOF u, d, s + dilepton

2013 TPC + TOF + MTDu, d, s, c, b + dilepton2014 TPC + TOF + MTD + HFT

Nu Xu 11/15STAR Collaboration Meeting, BNL, February 24 – March 1, 2013

p/Ae

0

EMCal iTPC Tracking PID EM/HCalTracking

HFTTPC

TOFBEMCMTD EEMC GEM

η = -1 η = 0 η = 1

STAR Forward Upgrade Plan (2018)

HLT

Built on the mid-y success: Evolution, not revolution!

(1) eSTAR taskforce: E. Sichtermann and Z.B. Xu(2) STAR Upgrade/Decadal Plan: C. Gagliardi, H. Huang and F. Videbaek

Be part of STAR’s forward upgrades!

Nu Xu 12/15STAR Collaboration Meeting, BNL, February 24 – March 1, 2013

2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

pp HI pp/HI HI pp pA/HI pA pA ep ep/eA ep/eA

Study QCD Phase Structure

HFT/MTD: HF, dileptons HFT’

BES-I e-cooling&iTPC BES-II, √sNN ≤ 20GeV

Upgrades at large-y & iTPC, CGC, pdf eSTAR/eRHIC

CBM Experiment (QCD phase structure)

LH

C

FA

iR

R

HIC

LHC √sNN = 5.5 TeV (sQGP properties)

Spin: Δg, W±, AN

STAR CorePrograms

x10 x100

Nu Xu 13/15STAR Collaboration Meeting, BNL, February 24 – March 1, 2013

Future STAR Meetings

Date name location chair focus

2/24 - 3/1 Collaboration BNL J. Dunlop

6/6-7 Regional Prague J. Bielcik HF,HBT

? Analysis meeting ? BES-I, strangeness

7/22-27 SQM2013 Birmingham

10/20-25 Collaboration LBNL? HF, strangeness

11/4-8 HP2013 Stellenbosch, SA

Nu Xu 14/15STAR Collaboration Meeting, BNL, February 24 – March 1, 2013

- Be part of STAR forward upgrade- iTPC: BNL, IU, KS, LBNL, SDU, SINAP, UC Davis, USTC - Forward-y: IU, LBNL, Penn State Texas A&M, UCLANeed more efforts!

- Be part of STAR operation- Software efforts:- Operation efforts: detector maintain, Early summer, Operation Meeting with conveners. Of

course, all are welcome!

- Be part of STAR physics analysis

- Trainor issue: solvable if the council put its act together

Challenges in the Collaboration

Nu Xu 15/15STAR Collaboration Meeting, BNL, February 24 – March 1, 2013