STAR QA Board

[林挺 <tinglin@sdu.edu.cn>]

Hi all:

A brief minutes for today's meeting:

https://drupal.star.bnl.gov/STAR/event/2021/10/29/qa-board-meeting

1. 19.6 GeV Run-by-Run QA:

Comments:

1). RunID 450 to 500, the jump in eta/phi plot likely due to the RDO problems during this runing period.
2). At the beginning of the run, the beam is not centered, so there is shift in eta;

Things to do:

1). Compare the bad run-list to those points that outside the normal ranges, see if there is plotting issues;

2). Check the RunLog to find out the possible reasons for the bad runs;

3). Check other variables like Q;

4). Change the tolerance from 5sigma to 3sigma, to check the sensitivity of cuts.

Conclusion: 

Need to do some checks, but the run list after this QA is good enough for centrality.

2. Discussion:

1). Centrality group is fine with using DCA, but will also monitor the sDCA. May change DCA to sDCA after having a good understanding of this variable.

2). Yu Hu will update the code in Github.

3) We are 80% of the way through 14.6 GeV production. 14.6 GeV QA will start ASAP after the data production is done.

4) For FXT run QA, need a few changes eg. need to change RefMult to number of primary tracks, shift vr cuts. Each working group should think about the changes on QA.

Best,

Ting