STAR PWGC meeting

2021-04-09 09:30
America/New York
Friday, 9 April 2021
https://bnl.zoomgov.com/j/1619294511?pwd=TkRhZzFjOWZSQnpvUVdGUGFVMmlHdz09, at 13:30 (GMT), duration : 00:00
1) Paper preview: Probing quadrupole deformation of uranium in relativistic nuclei collisions
- Brief introduction from the PWG conveners (5’) [ShinIchi Esumi]
- Paper proposal (15')  [Presentation by Chunjian Zhang]
- Open discussions (35')
- Summary from the conveners' panel (5’)

Proposal page: https://drupal.star.bnl.gov/STAR/blog/chunjian/probing-quadrupole-deformation-uranium-relativistic-nuclear-collisions

NOTES

2) Study of Run19 14.5 GeV for hlt-allvtx trigger: https://drupal.star.bnl.gov/STAR/blog/kehw/minibias-allvtx-test-production-qa-0 

Conclusions: conveners will discuss the study within PWGs

3) eTOF status in 14.5 GeV. Is it worth calibration effort? 
Phillip "For 14.5 GeV, there is a short period in the beginning (before day 118) when the HV was still at the 19.6GeV-Setting and before pre-amp channels died in masses.
These data are probably usable, but might still be significant effort to calibrate. There are is also already a significant number of channels dead.
Afterwards, high voltage was raised again and more and more channels started dying of in beam loss events.
>50% of all channels died or have high threshold and they are basically randomly distributed about the eTOF surface.
For this period afterwards, i don't see a reliable way to determine any efficiency.
"

Conclusions: it was brought up that data after day 118 could be useful for flow analysis, for which efficiency correction does not play a significant role. Will discuss with eTOF group to see how much efforts are needed for calibration. 

4) Do we want to run eTOF in 2022 (pp 510 GeV)? What is the physics motivation?

Conclusions: conveners will bring this up for discussion at PWG meetings. 
 
5) Status of proton feed-down correction: what is needed to complete the study?

Conclusions: Daniel Brandenburg showed a brief summary of current status (SLIDES). LFSUPC PWG will follow up and perform those agreed-upon studies and checks. 

6) sQM abstracts: merging and speaker selection (ACCEPTANCE LIST)

Conclusions: Conveners will contact relevant PAs to produce merged abstracts (CF - 2, FCV - 1, HF - 1), and discuss with them whether they can decide on a speaker. If not, we will turn to STC. For those pre-merged abstracts, we will ask STC to select a speaker. 
TimeTalkPresenter
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