Star-tpc-l mailing list

[Frank Geurts <geurts AT rice.edu>]

Hi,

Please let me know what particular PRs are taking long. At this time, I see 
only one listed that is pending one reviewer.

My understanding is that additional reviewers can always be added, so for 
TPC-related work it would be fine to include Richard.

-Frank




______________________________________________________
Frank Geurts   (he/him)
Professor of Physics & Astronomy • Rice University, Houston TX
 T.W. Bonner Nucl. Lab.          • Dept. of Physics & Astronomy
 office 713-348-5314             • web http://heavyions.rice.edu

> On Jul 13, 2023, at 11:55 AM, Richard Witt via Star-tpc-l 
> <star-tpc-l AT lists.bnl.gov> wrote:
>
>
> Present: Alexei, Flemming, Tommy, Yuri, Gene, and myself
>
> == Hardware
> — email came from power supply company, they received PO
> — will start to build spare PS (~1 month)
> — new 6-pack of methane
> — DV seems to be coming back to normal
> — have about 40 days of gas
> — trying to understand why some 6-packs are “bad” (affect DV) and others 
> are okay
> — Alexei trying to compare with reference gas from a small bottle he has
> — has located a gas chromatography group at the lab and will ask about 
> doing comparison work
>
>
> == Electronics
> — system is behaving well with low intensity beams
> — full system has been included for about 2 weeks
> — with saturated minbias ZDC rate is ~13 kHz
> — can record at ~4.2 kHz in those conditions
>
> == Software
> — Gene wants to look for distortions due to increase in gated grid rate
> — SC & GL for d+Au 200 is a high priority for working groups
> — Babu is currently very busy with thesis work but can likely wrap-up soon
> — other priority is AuAu 17.3 GeV calibrations
> — Gene started on it yesterday, through one iteration so far
> — hope is to finish in next few days
> — will then do calibration production for dE/dx and bToF
> — Run 22 pp500 is the other activity for calibrations
> — Richard from Temple is getting started there
> — Flemming mention the beam line into STAR has moved by a couple 
> millimeters in past few days
> — Gene will look at impacts from that
> — Irakli is continuing alignment work
> — results using DAQ file and event files are different
> — DAQ files are not ordered by event number but event files are
> — Yuri does not find significant differences when reading event files in 
> same order as events were collected (order in DAQ file)
> — Tommy estimated SC from files
> — also compared PV reconstruction from east and west individually, there is 
> a difference
> — plots are attached to previous TPC meeting agenda
> — Yuri believes the result is an overestimated efficiency
> — may be a reproduction of 2019 and 2020 FXT, Gene may try to reproduce the 
> calibration to remove the problem
> — problem will still exist in P21ib
> — Gene will look into comparing with work previously done by Irakli
> — if there is a difference we may need to include the correction for the 
> reproduction
> — Yuri still looking into combined PID
>
>
> == AOB
> — Pull requests from Yuri and others are taking extremely long to be 
> approved due to requiring two independent approvers
> — TPC group will request that either Richard W. be added as an approver for 
> pull requests on TPC software, or the requirement be reduced to one approver
> — Richard will follow-up with Frank on this
>
> Best Regards,
>   Richard
>
> Sent from my iPad
> --
> "Education is the most powerful weapon which you can use to change
> the world."
>
> --Nelson Mandela
>
> ~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~
>  Richard Witt, Professor of Physics     Phone (USNA): 410-293-6675
>     United States Naval Academy         Email: witt AT usna.edu
> ~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~
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