STAR QA Board

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

Hi Geary:

I think Gene can comment on this. What they use are the Min-bias events from 
the fast production files (picoDst or MuDst files) generated by the 
production group. 

There is Vx vs. Vy plot in fast offline, but do not get report if that is 
problematic. For the fast offline, Gene said that current setup require that 
there should be a primary vertex exist, then it is working.

As it is holiday, there is no expert present during the meeting, we will 
continue to check using this week's data and discuss in next QA board meeting 
(that will be Dec. 31th, Friday at noon BNL Time).

Thanks,
Ting


> -----Original Messages-----
> From: "Geary Eppley via STAR-QAboard-l" <star-qaboard-l@lists.bnl.gov>
> Sent Time: 2021-12-27 07:04:27 (Monday)
> To: STAR-QAboard-l <star-qaboard-l@lists.bnl.gov>
> Cc: 
> Subject: Re: [STAR-QAboard] 2. Vz – vpdVz distribution is shifted by about 
> 5cm.
> 
> HF & Bulkcorr QA reps:
> 
> The vertex Vx vs Vy plot doesn't look physical. Can the beam really do  
> that? Do you understand why your plot looks so different than L4 for  
> that period? Your central distribution is an order of magnitude more  
> compact than the L4 plot.
> 
> Is your result consistent with the mean vertex position Gene sent out?  
> What plot and analysis chain does Gene use? What analysis chain do you  
> use? Is there a Vx vs Vy plot in Fast offline? If there a Vz VPD-TPC  
> plot in fast offline?
> 
> Could you plot Vz VPD-TPC for just the central Vx vs Vy distribution?
> 
> -Geary
> 
> 
> Re: Re: [STAR-QAboard] QA Board Meeting December 24
> 
> Date  12/24/2021 (10:51:06 PM CST)
> From  Ting Lin <tinglin@sdu.edu.cn>
> To    geary eppley <eppley@rice.edu>
> text/plain Text (3 KB)
> Hi Geary:
> 
> We found this issue from offline QA by HF and Bulkcorr group.
> 
> You can see the slide 3 from HF group by Yingzhou and Kaifeng below:
> https://drupal.star.bnl.gov/STAR/system/files/1225_HF_QA_pp500_0.pdf
> 
> Also slide 3 from Bulkcorr group by Ashish:
> https://drupal.star.bnl.gov/STAR/system/files/Bulkcorr_pp_500GeV_QA_week1_new.pdf
> 
> Best,
> Ting
> 
> 
> 
> Ting Lin tinglin at sdu.edu.cn
> Fri Dec 24 13:17:40 EST 2021
> Previous message: [STAR-QAboard] QA Board Meeting December 24
> Next message: [STAR-QAboard] QA Board Meeting December 24
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> 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. Offline QA software get stuck this morning.
> 2. Run 22355023 – 22357011 have excessive hits in various RDOs. Tonko  
> power cycled the TPX FEE’s and that seems to have fixed the issue.  
> This will very likely to affect the track quality. Need to check with  
> TPC expert if we want to mark these as bad or not.
> 3. Mean dE/dx has been slowly decreasing since the first run  
> e.g.22349015 with MIP at 2.4 keV/cm, which continued on days 351 &  
> 352, but then reduced to more normal values (2.2 keV/cm) on day 353 to  
> the present. Also need to check with expert about the real reason if  
> it happen again.
> 
> > From pwg:
> 1. Most of the problematic runs have been identified by offline QA  
> shift, also noted in the shift-log.
> 2. Vz – vpdVz distribution is shifted by about 5cm.
> 3. Vr shifted during the last few runs in day 356.
> 
>        BulkCorr (Ashish)
>        LF (Chenliang)
>        HF (Yingjie, Kaifeng)
>        JetCorr (Tong)
>        ColdQCD (Bassam): .
> 
> Best,
> Ting
> 
> 
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