5-11 February 2017
Hyatt Regency Chicago
America/Chicago timezone

The STAR beam energy scan phase II physics and upgrades

7 Feb 2017, 18:10
Regency A

Regency A

Oral Future Experimental Facilities, Upgrades, and Instrumentation Parallel Session 4.1: Baryon-Rich QCD Matter and Astrophysics (I)


Chi Yang (USTC)


The second phase of the Beam Energy Scan at RHIC, BES-II, is scheduled
for 2019-2020 and will explore with precision measurements the high baryon
density region of the QCD phase diagram. The program will examine the
energy regime of interest determined from the results of BES-I. Some of
the key measurements anticipated are: the kurtosis of net-protons that
could pinpoint the position of a critical point, the directed flow of
baryons vs. energy that might prove a softening of the EOS, and the chiral
restoration in the dilepton channel. The measurements will be possible
with the order of magnitude better statistics provided by the electron
cooling upgrade of RHIC and with the detector upgrades planned to extend
STAR's experimental reach. The upgrades are: the replacement of the inner
TPC sectors (iTPC) that increases the rapidity coverage of identified
particles, the Event Plane Detector (EPD) that improves the triggering and
event plane resolution, and the end-cap TOF (eTOF) that extends
the PID capabilities to larger rapidities in one hemisphere of STAR. The
talk will highlight the physics opportunities enabled by these upgrades.

Preferred Track Future Experimental Facilities, Upgrades, and Instrumentation
Collaboration STAR

Primary author

Chi Yang (USTC)

Presentation materials