The STAR experiment

Summary

 1) STAR Collaboration and CAD have a good understanding of each other's plan and goals

   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.

 

 

 
1) Run15 Calib
- subsystem updates [includes Bingchu's slides]

2) Run16 preps

3) DIGMAPS

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Agenda

- Run15 Calib progress, including Alignment
- Anything missing from DOE presentation?
- AOB

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-- Run15 Calibration (+Alignment)
+ HFT-TPC alignment issues
+ PXL masking, IST fixes, SSD tables etc [1-3 slides with brief statements welcome]
+ Calib Production request
+ Tracking efficiency and event vertex studies for pp

-- Run14 Data with SSD [when to produce?]

-- Run16 preparation. 
Given all the experience and software readiness from Run14, we should aim to have the HFT in tracking included in fast offline production so we can get quick feedback on the real performance. This will need:

1) [real time] Calibration and DB tables should be migrated to offline regularly.

2) Alignment calibration done before physics runs.

3) Offline QA tool (Daniel K. did the development in Run14, it is time to review and make use of them in the coming run)

-- AOB
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1) Update on Run15 alignment

    - Sanshiro is looking into IST and SSD too and he is going to discuss at the meeting.

2) Run15 calibration status

    - ZF cosmic runs taken in the middle and at the end of Run15. I would be very interested to seeing how stable our alignment is throughout the run. Would be good to get all subsystem in place.

    - Other pp200 and pAu200 physics runs. Yaping is done with IST Tables and Jonathan is finishing the SSD. 
3) DOE meeting on 11/12 
 - Efficiencies with +SSD

4) Embedding news 

5) AOB

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 Mustafa's slides are here:
http://www.star.bnl.gov/protected/heavy/mstftsm/run14/hft-geometry-in-embedding/2015-10-xx.pdf


-  Updates on DOE preps (see also here )
-  Run15 Calibs (see also here last week's meeting)
- AOB


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