STAR QA Board

["Ting Lin" <tinglin@sdu.edu.cn>]

Hi all:

A brief minutes for today's meeting:
https://drupal.star.bnl.gov/STAR/comp/qa/pwg-qa/run-22-qa

For Run-22 offline QA:
 1). Run 23070009: TPC sector-by-sector hit distributions skewed. Gene found 
that this was caused by a bad space-charge correction scaler in one file, 
that caused the average hit positions to be shifted. Gene will zero out the 
TPC status for a short period around this errant scaler so that the data 
won't be used in analyses.
  -> It also happen for day-66 last week. If the shift is > 10cm, it will 
fail and stop the production. But this run is below this threshold.
 2). Runs 23073028 – 033 have very low hit densities in most sectors in the 
anode 3 & 4 region. Shift log reported very high, ~100% TPX and iTPC dead 
time. Runs marked BAD by fast-offline QA.
 3). Bad dE/dx mean and bands in run 23071024:
 4). Also on day 073 the FCS trigger IDs were changed which affected the 
trigger grouping assignments used for the st_fwd data stream. This caused 
many of the “XX” triggers to be labeled “MB” in the fast-offline shift 
reports. This was quickly corrected by Jeff Landgraf and Gene and only 
affected a few runs from 23073070 – 074027. The QA shift crew (R. Witt) 
corrected the entries (MB -> XX) by hand
 5). Run 23074012: Bad dEdx mean, Almost empty dEdx bands Empty BTOF 1/ b 
plot Almost empty MTD – TPC track matching plot. Usually these 5 plots are 
either filled as usual, or are totally empty, e.g. when there is no start 
-time. Shift log reported run stoppage to take out di -muon trigger.

>From PWG:
 1). Since last week, several mid-rapidity triggers like JP1 are discontinue 
to increase the rate for forward upgrade.
 2). LF group found that for Run23069019-031, no TOF information in picoDst 
root files. Gene check the logfile, there are btof hits, but none of them 
match to TPC tracks. Maybe calibration issues for these runs.
 3). Continue to see double vz peak.
 4). TPC Vz - VPD Vz = 5cm

Best,
Ting

> -----Original Messages-----
> From: "Ting Lin" <tinglin@sdu.edu.cn>
> Sent Time: 2022-03-17 09:19:07 (Thursday)
> To: "star-qaboard-l@lists.bnl.gov" <star-qaboard-l@lists.bnl.gov>
> Cc: 
> Subject: QA Board Meeting March 18
> 
> Hi all:
> 
> We will have a QA board meeting on Friday at noon BNL time.
> https://drupal.star.bnl.gov/STAR/comp/qa/pwg-qa/run-22-qa
> 
> If you have slides to show, please link to the meeting page (in below link) 
> or send it to me.
> https://drupal.star.bnl.gov/STAR/event/2022/03/18/QA-Board-Meeting
> 
> It is daylight-saving time now at the US, so the meeting will be one hour 
> earlier than before for people in China. 
> 
> Join ZoomGov Meeting:
> https://urldefense.com/v3/__https://bnl.zoomgov.com/j/1618435669?pwd=L3B6M3JKcjRFMVFxQTNhaEdBdkZ5UT09__;!!P4SdNyxKAPE!Vf4NfWIsOJ36FVM6gMsyshfaGS_3RwuIml4ChzYH-t5GGZ1JqDFVCtiU48CuBFXvMTT86-yd5ss$
>  
> Meeting ID: 161 843 5669
> Passcode: 194299
> 
> Thanks.
> Ting