The STAR experiment

SRN 

ID: 1096183

EVO Phone Bridge Telephone Numbers:
---------------
- USA (BNL, Upton, NY)
+1 631 344 6100

- USA (Caltech, Pasadena, CA)
+1 626 395 2112

   for a successful BES-II

2) LEReC project is well under its way now at the construction phase.

     LEReC cooling possible at 11.5GeV 

3) LEReC phase-II (or higher energy cooling for 12--20GeV) is off the table.

    However, we expect a factor of 3 increase in luminosity at these energies

    with more beam intensity. A demonstration test will be performed in run16 or run17.

4) STAR presented in whitepapers and proposal for BES-II a table of requested numbers of events

   at  five beam energies (7.7, 9.1, 11.5, 14.5 and 19.6 GeV center-of-mass) with 7 major physics

   topics. The requested numbers of events are the desired events we should strive to

   achieve so that we can maximize our scientific goals from BES-II.

   As a contingency, the event number required for the net-proton Kurtosis measurement

   at each energy is the minimum for a viable physics program

5) To maximize our operation efficiency, the default plan is to start at highest energies

   and interleave with cooling commissioning with lowest energy running last. However,

   the experimental preference is to have the lowest energy dataset as early as practical.

6) With the needed commissioning time for LEReC and no cooling at

    higher energies, longer run (24 weeks instead of 22 weeks) and/or additional year

    may be required if the minimum goals could not be achieved.