Difference between revisions of "JEF meeting, July 26, 2024"

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*'''Analysis/Simulation'''
 
*'''Analysis/Simulation'''
 
** [https://halldweb.jlab.org/DocDB/0065/006576/001/glue-jefxd-igal-jaegle-26072024.pdf What is the optimal incident photon-beam energy range to search for eta to ggpi^0?]
 
** [https://halldweb.jlab.org/DocDB/0065/006576/001/glue-jefxd-igal-jaegle-26072024.pdf What is the optimal incident photon-beam energy range to search for eta to ggpi^0?]
 +
 +
=Minutes=
 +
Attendees: Igal, Bill, Phil, Sasha, Laveen, Vlad, Liping, Zisis, Olga, Ilya, S.T.
 +
* Detector support group assembling HV cables (have 26 out of 36)
 +
* Design of HV distribution board completed, boards need to be installed in hall
 +
* Have prototype for LED driver pcb for LMS
 +
* Cabling of detector continues, starting upper part of ECAL
 +
** Goal to finish by end of August
 +
** Plan to check layer-by-layer after row of PMT dividers installed
 +
** Need to think about checking with DAQ, but DAQ won't be fully ready until (perhaps) September
 +
* Igal presented an update on his continuing η→π0γγ studies
 +
** Argued that boost argument for background suppression is not valid for this channel
 +
** Argued that running at lower beam energies than nominal GlueX settings might be beneficial for JEF program because the η cross section is higher and 2π0 background appears to be lower
 +
*** Compared data for E&gamma;>8.3 GeV and  3 < E&gamma; < 6 GeV
 +
*** Fit using shapes from MC appears to work well
 +
*** No significant signal for &eta;&rarr;&pi;0&gamma;&gamma; seen in any of M(&pi;0&gamma;&gamma;) distributions
 +
* Ilya and S.T. exchanged plots showing close shower separation for two showers in insert using two different implementations of island algorithm showing good agreement
 +
* Zisis suggested writing an internal report about the current state of analysis/simulation for JEF -- S.T. agreed to start working on a draft

Latest revision as of 16:22, 29 July 2024

Meeting time and location:

Agenda

  • Preparation of parts for ECAL -- Sasha
    • - HV long cable: Sammy and Mindy have to assemble 10 cables
    • - HV distribution boards. Chris has completed the design of the HV distribution boards. We met with Chris, Tim, and Scot regarding location of the boards on the detector frame
    • - LED: Started testing the prototype of the LMS (need to make the detector room light tight)
  • Installation of the FCAL2 detector & integration to GlueX -- Sasha / Vlad / Hakob / Laveen
  • Students -- Sasha
    • - Expect one student from Wuhan, paperwork is in process.
  • Beam tests with the PS
      • measure shower beam profile and reconstruction in the crystal/LG transition region
      • (install prototype with 5x5 PbWO4 modules + ? LG)
  • Other hardware projects
    • prototype of the ECAL veto counter (?)
  • Analysis/Simulation

Minutes

Attendees: Igal, Bill, Phil, Sasha, Laveen, Vlad, Liping, Zisis, Olga, Ilya, S.T.

  • Detector support group assembling HV cables (have 26 out of 36)
  • Design of HV distribution board completed, boards need to be installed in hall
  • Have prototype for LED driver pcb for LMS
  • Cabling of detector continues, starting upper part of ECAL
    • Goal to finish by end of August
    • Plan to check layer-by-layer after row of PMT dividers installed
    • Need to think about checking with DAQ, but DAQ won't be fully ready until (perhaps) September
  • Igal presented an update on his continuing η→π0γγ studies
    • Argued that boost argument for background suppression is not valid for this channel
    • Argued that running at lower beam energies than nominal GlueX settings might be beneficial for JEF program because the η cross section is higher and 2π0 background appears to be lower
      • Compared data for Eγ>8.3 GeV and 3 < Eγ < 6 GeV
      • Fit using shapes from MC appears to work well
      • No significant signal for η→π0γγ seen in any of M(π0γγ) distributions
  • Ilya and S.T. exchanged plots showing close shower separation for two showers in insert using two different implementations of island algorithm showing good agreement
  • Zisis suggested writing an internal report about the current state of analysis/simulation for JEF -- S.T. agreed to start working on a draft
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