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["Ma, Rongrong" <marr AT bnl.gov>]

Hello All

You can find the slides from Yue Xu (https://drupal.star.bnl.gov/STAR/system/files/Acceptanceindffproduc_20231208.pdf) and Wei Zhang (https://drupal.star.bnl.gov/STAR/system/files/nsigmaE_Distribution.pdf) here. They posted the links in a small group discussion thread. 

Yue also mentioned:

And the expected de/dx (Bichsel fuction) is:

1. For triton : dedx_expected = charge*charge*(TMath::Exp(Bichsel::Instance()->GetMostProbableZM(TMath::Log10(p*TMath::Abs(charge)/mass), 1)));

2. For helium3 :

    Float_t ParfHe3Mean[4] = {29.3642,-0.983422,0.0958638,0.169811};

    dedx_expected = ParfHe3Mean[0]*TMath::Power(p, ParfHe3Mean[1] + ParfHe3Mean[2]*log(p) + ParfHe3Mean[3]*log(p)*log(p));

Best

Rongrong

On Dec 7, 2023, at 1:03 PM, Richard Witt via Star-tpc-l <Star-tpc-l AT lists.bnl.gov> wrote:

Present: Alexei, Tommy, Gene, Jim, Flemming, Rongrong, Weizhang, Yuri, Yue, Sonoraj, and myself

== Hardware

— Monday Alexei fixed the bottle leak (using old style clamps)

— will watch over next 3 months

— Finished moving RDOs to make room for target for TPC survey

— now need to ensure all holes are clean enough for survey

— will request survey be done next week at 2 o’clock meeting today

— some beneficial adjustments made to scaffolding 

== Electronics

— nothing new reported this week

== Software

— Run 22 SC (pp500) work is ongoing

— some impact due to vertex finding recently due to pedestal correction

— Yuri just finished dE/dx calibration for Run 19 AuAu200

— checked and found no surprises

— Now working on revisiting Irakli’s alignment work with cosmics 

— all five year with iTPC

— lacked some statistics for Run 19 and 20

— recovered those and now making some progress

— see https://drupal.star.bnl.gov/STAR/blog/fisyak/AuAu200GeV2019-dEdx-recalibration-new-model-has-finished

== AOB

— Yue Xu present on light nuclei acceptance in Runs 21 and 23

— links to slides will be posted to TPC list

— requesting a 10k production, keeping event.root, with libraries SL21d and SL23e 

— Weizhang presented photonic electrons from  AuAu 14.6 GeV using SL21c and SL23d 

— comparison of nsignmaE (electron) between libraries

— links to slides will be posted to the TPC list 

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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