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:
>From Lanny Ray: 
1) On day 018, (last Tuesday) the anode voltages in grid area 5 in sectors 8 
– 11 were turned off. This persisted from runs 23018065 – 23019026 as 
reported with QA issue 18064. Flemming was notified. 
    -> Flemming: There were massive TPC anode crash at that time, voltage 
disappear, DO have to manually set it up. So lots of confusion at that time, 
it was set to a wrong value 100voltage?, not zero. 
2) TPC tracking: Run integrated signed DCA were shifted >0 on day 015, then 
shifted <0 towards the end of day 016, remaining so through early Tuesday 
(day 018) 
   -> ZDC counts were low at day 015, ZDC scalar is not correctly for a few 
days. There will be efforts to recalibrate this.
3) TPC tracking: Signed DCA vs run-time variations often exceed 0.1 cm.
4) BTOW: A section of towers were reported out for runs 23016081, 082 by D.O. 
Daniel Kincses (see left plot below). However, such large scale outages are 
difficult for the QA shift crew to detect when the histograms are dominated 
by unmasked, hot towers. -> These hot towers were masked starting on Thursday 
(day 020). -> It looks like experts mask these hot channels out. This is very 
helpful for offine QA, will continue to check this.

>From pwg: 
1. Run23015034/35/36 has 0 good events, marked as questionable in Runlog: 
iupsal: TOF HV off, no TOF hits
2. VPD vz - TPC vz is now centering around 0
3. day 014 has power dip, so take cosmic whole day.

Best,
Ting

> -----Original Messages-----
> From: "Ting Lin" <tinglin@sdu.edu.cn>
> Sent Time: 2022-01-20 10:50:32 (Thursday)
> To: "star-qaboard-l@lists.bnl.gov" <star-qaboard-l@lists.bnl.gov>
> Cc: 
> Subject: QA Board Meeting January 21
> 
> 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/2022/01/21/QA-Board-Meeting
> 
> Join ZoomGov Meeting:
> https://urldefense.com/v3/__https://bnl.zoomgov.com/j/1618435669?pwd=L3B6M3JKcjRFMVFxQTNhaEdBdkZ5UT09__;!!P4SdNyxKAPE!XJYqKEMFjlFe1PfkqyrwxMH7lj_Tl2YSZwaUXXUfyzTJ8D_L1IwR0o6fb2EEU-2eeO-fY_ut__g$
>  
> Meeting ID: 161 843 5669
> Passcode: 194299
> 
> Thanks.
> Ting
>