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["Van Buren, Gene" <gene AT bnl.gov>]

OK - thanks, Yuri. I will get this going.
-Gene


> On Jun 16, 2023, at 12:40 PM, Fisyak, Yuri V via Star-tpc-l 
> <Star-tpc-l AT lists.bnl.gov> wrote:
> 
>         Hello, I have checked new dE/dx calibration sample for RunXIX-XX 
> FXT.
> I see that the calibration sample for 3p85GeV_fixedTarget_2019 has to be 
> increase by a factor of 20 to provide a reliable dE/dx calibration.
>  
>  
> 13p5GeV_fixedTarget_2020      : No. of Prinmary Vertices =    0.34298M, 
> Good =    0.34298M,     No. positve tracks =     13.079M,       negative 
> tracks =     7.0701M
> 19p5GeV_fixedTarget_2020      : No. of Prinmary Vertices =     0.3622M, 
> Good =     0.3622M,     No. positve tracks =     14.105M,       negative 
> tracks =     8.3027M
> 26p5GeV_fixedTarget_2020      : No. of Prinmary Vertices =    0.37886M, 
> Good =    0.37886M,     No. positve tracks =     14.277M,       negative 
> tracks =     8.8486M
> 31GeV_fixedTarget_2019        : No. of Prinmary Vertices =    0.31423M, 
> Good =    0.31423M,     No. positve tracks =     11.891M,       negative 
> tracks =     7.4593M
> 31p2GeV_fixedTarget_2020      : No. of Prinmary Vertices =    0.43853M, 
> Good =    0.43853M,     No. positve tracks =     16.939M,       negative 
> tracks =     10.678M
>  
> 3p85GeV_fixedTarget_2019      : No. of Prinmary Vertices =   0.048554M, 
> Good =   0.048554M,     No. positve tracks =     1.7863M,       negative 
> tracks =    0.45417M <<<<<<<<<<<
>  
> 4p59GeV_fixedTarget_2019      : No. of Prinmary Vertices =    0.93338M, 
> Good =    0.93338M,     No. positve tracks =     37.116M,       negative 
> tracks =     11.387M
> 5p75GeV_fixedTarget_2020      : No. of Prinmary Vertices =    0.47772M, 
> Good =    0.47772M,     No. positve tracks =     14.857M,       negative 
> tracks =     5.4902M
> 7.3GeV_fixedTarget_2019       : No. of Prinmary Vertices =    0.38862M, 
> Good =    0.38862M,     No. positve tracks =     14.227M,       negative 
> tracks =     6.0581M
> 7p3GeV_fixedTarget_2020       : No. of Prinmary Vertices =    0.42879M, 
> Good =    0.42879M,     No. positve tracks =     16.363M,       negative 
> tracks =     6.9606M
> 9p8GeV_fixedTarget_2020       : No. of Prinmary Vertices =    0.60542M, 
> Good =    0.60542M,     No. positve tracks =     23.333M,       negative 
> tracks =      11.36M
> 
>                                                               Yuri Fisyak
> 
> STAR                                           Phone: +1 631 344 3913
> Brookhaven National Laboratory  Fax:    +1 631 344 4206
> 510A/1-161
> http://www.star.bnl.gov/~fisyak       E-mail: fisyak AT bnl.gov
>  
>  
>  
> From: Star-tpc-l <star-tpc-l-bounces AT lists.bnl.gov> on behalf of Richard 
> Witt via Star-tpc-l <star-tpc-l AT lists.bnl.gov>
> Date: Thursday, June 15, 2023 at 12:43 PM
> To: Star-tpc L <Star-tpc-l AT lists.bnl.gov>
> Subject: [Star-tpc-l] TPC Meeting Minutes
> 
> Present: Alexei, Flemming, Tommy, Yuri, Gene, David, and myself
>  
> == Hardware
> — water leak at blower
> — problem with cathode HV supply
> — discussed with sPHENIX
> — Alexei investigating and getting quote for power supply
> — long delay in production (~20 weeks)
> — looking into use of alternative PS from test stand
> — some concern about absence of good laser runs
> — were not taken due to water leaks in magnet cooling system (under repair 
> currently)
> — expect will be better laser runs soon 
>  
>  
> == Electronics
> — good progress
> — TPX FPGA code is mostly done
> — about 3 RDOs done in sector 1, started moving through sector 2
> — may be some issue with timing 
> — but new code is running on a number of RDOs in system
> — online plots are filling correctly
> — hope to test much larger part of system next week
>  
> == Software
> — Gene noted the volume of zero field data and its utility in calibrations 
> and alignment
> — discussed work with Temple 
> — students Charlie Clark, Richard Chruchley will be working
> — SC for run 23, usually done by HLT group, new person this year, Baoshan
> — Gene putting Baoshan in touch with Babu
> — all 2019 and 2020 FXT runs done for dE/dx calibration 
> — Yuri working on dE/dx FXT 2019 and 2020
> — FF vs RFF for 2021 is still a puzzle since no TPC movement has been 
> detected
> — O+O and 7.7 Au+Au were taken with FF
> — other data after RFF change do not show same distortion
> — 1 mrad TPC roatation shown by survey, but Yuri does not see that in his 
> work
> — only for 2021 FF does TPC appear to be rotated
> — old survey position works before and after that period
> — Irakli increased statistics by factor ~5
> — Yuri working on combined PID in O+O data
> — now trying to understand ToF
> — want to better understand how ToF resolution is calculated
> — Yuri looking into RDO activity map
> — 2020 and 2021 data
> — need confirmation from 2 independent experts 
> — currently only have one such expert
> — expect strong effect on embedding for 2020/21
> — New cluster finder 
> — after FPGA work is done, need to check what is produced offline and 
> online (compare)
> — expecting new drift velocity today
> — Alexei says can check data from last night and this morning for new drift 
> velocity
>  
>  
> == AOB
> — Request from Frank to present status of several TPC topics in next week’s 
> S&C meeting
> — Richard will call to discuss with Frank and update the group
> — Yuri also need some help from Tommy to run over as much data as possible 
> from previous years for FF and RFF comparison 
> — years all the way back to 2013, etc.
> — want to understand if the problem seen in O+O can be found in earlier data
>  
> 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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