STAR QA Board

[Takahito Todoroki <todoroki@bnl.gov>]

Hello Flemming,

Thank you very much for the useful input. The event number dependence of #tracks in the inefficient region has been added on page 17 of the slides:

https://drupal.star.bnl.gov/STAR/system/files/2022_1129_Run19AuAu200QA.pdf

It seems that the region was as efficient as the other regions at the beginning but deteriorated at least three times as the run continued. 

Right now it’s difficult to see if the deteriorations were sudden jumps or continuous changes due to the gaps in 

the event number because of inaccessible PicoDst files.

Best regards,

Takahito

On Dec 4, 2022, at 0:29, videbaek <videbaek@bnl.gov> wrote:

Hallo Ting et al.

I took at look at the other QA info we have on this run. There is nothing obvious in the online QA plot
in the 2D plots (the eta-phi ineff for the run 192001 correspond to sector 1), but if you look at the
charge dist vs. phi for itpc you see a small loss. These are not split into eta> and < 0. The few runs during that night was noticed by Tonko to have many autorecoveries for itpc S1-RDO1 and was reprogrammed during the day. This by itself
should not cause ineffeciency as busy for the whole tpcreadout is set.

Would it be possible to make a plot of #tracks in for that sector (eta>0 and phi =60deg +-15) vs event number
(appropriately binned) to see if the is there is a time dependence. In any case the run should be marked as bad, but
it could be useful to understand what happened.

best Flemming




On 2022-12-03 06:36, Takahito Todoroki via STAR-QAboard-l wrote:

Hello Ting and all,
Thanks a lot for the minutes. Here is a follow-up for the homework:
https://drupal.star.bnl.gov/STAR/system/files/2022_1129_Run19AuAu200QA.pdf
I have compared the phi distribution between run 20193001 and all the
runs.
In 20193001, there is an inefficient area in TPC around phi = 1 & eta

0, which

seems to have caused the deviation close to 5 sigma.
As we discussed in the meeting, probably we should keep this run as
good, but
some analyses such as spectra measurements would require attention to
this run.
Best regards,
Takahito

On Dec 3, 2022, at 2:22, Ting Lin via STAR-QAboard-l
<star-qaboard-l@lists.bnl.gov> wrote:
Hi all:
A brief minutes for today's meeting:
1. 2019 200GeV Data QA by Takahito Todoroki:
1) 97M events analyzed (138M in total), get three bad runs:
– 20191005: refmult
– 20191015: dE/dx
– 20192001: dE/dx
2) run 20193001 has average phi at 4.9sigma, but below the 5sigma
cut. It would be useful to compare this run's phi distribution to
other runs.
We will continue to meet every two weeks.
Best,
Ting

-----Original Messages-----
From: "Ting Lin" <tinglin@sdu.edu.cn>
Sent Time: 2022-12-01 11:29:02 (Thursday)
To: "star-qaboard-l@lists.bnl.gov" <star-qaboard-l@lists.bnl.gov>
Cc:
Subject: QA Board Meeting Dec 2
Hi all:
We will have a QA Board meeting on Friday at noon BNL time.
Takahito has sent out an update on the Au+Au 200 QA, so we will
discuss this and also any other updates that may available.
https://drupal.star.bnl.gov/STAR/event/2022/12/02/QA-Board-Meeting
Join ZoomGov Meeting:

https://urldefense.com/v3/__https://bnl.zoomgov.com/j/1618435669?pwd=L3B6M3JKcjRFMVFxQTNhaEdBdkZ5UT09__;!!P4SdNyxKAPE!AVtwKU9d7gouQ2g-TlUbb4y_YY5uO99mdb5YydNp7N5uNRfUYiZpdEJaFdUdmQzy8jeR4hdrva-mza1Bmv6l0ilLljmiKA0$

Meeting ID: 161 843 5669
Passcode: 194299
All the previous agendas are listed in the page below:
https://drupal.star.bnl.gov/STAR/comp/qa/pwg-qa/run-22-qa
Thanks.
Ting

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--
Flemming Videbaek
senior scientist, emeritus
videbaek @ bnl.gov
Brookhaven National Lab
Physics Department
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Upton, NY 11973

phone: 631-344-4106
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