Difference between revisions of "JEF meeting, August 9, 2024"

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(Created page with "Meeting time and location: *9:30 am EST (JLab time) remote only * [https://halldweb.jlab.org/wiki-private/index.php/JEF_Weekly_Meeting#Connection_information Connection inform...")
 
(→‎Minutes)
 
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=Agenda=
 
=Agenda=
 
*'''Preparation of parts for ECAL''' -- Sasha  
 
*'''Preparation of parts for ECAL''' -- Sasha  
 +
** - HV long cable: Sammy and Mindy have to assemble 10 cables
 +
** - HV distribution boards  [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/08_09_2024/hv_board1.jpg][https://halldweb.jlab.org/detectors/fcal2/installation/meetings/08_09_2024/hv_board2.jpg]
 +
** - Fix front panel of two LV distribution boards, re-install the boards on the detector frame [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/08_09_2024/lv_board1.jpg]
 +
** - LED: Started testing the prototype of the LMS (need to make the detector room light tight)
 +
<!-- **  - [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/05_10_2024/May-10-2024-L.pdf Update from Laveen] -->
 
* '''Installation of the FCAL2 detector & integration to GlueX''' -- Sasha / Vlad / Hakob / Laveen  
 
* '''Installation of the FCAL2 detector & integration to GlueX''' -- Sasha / Vlad / Hakob / Laveen  
 +
** Report from students [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/06_28_2024/student_report_06_28_2024.pptx]
 +
** Installation of HV cables [https://logbooks.jlab.org/entry/4313492][https://halldweb.jlab.org/detectors/fcal2/installation/meetings/08_02_2024]
 +
::: - two remaining bundle of cables will be ready in about a week
 +
** Installation and testing cables and dividers [https://logbooks.jlab.org/entry/4314504][https://logbooks.jlab.org/entry/4314582]
 +
** Installation of long signal cables [https://logbooks.jlab.org/entry/4312667]
 +
** Installation LV patch panels and cables [https://logbooks.jlab.org/entry/4312759]
 +
** Installation of optical fibers [https://logbooks.jlab.org/entry/4311499]
 +
** [https://halldweb.jlab.org/wiki/index.php/FCAL_Installation Detector installation page]
 +
** [https://halldweb.jlab.org/detectors/fcal2/installation/safety_docs/Document_240716_195013-1.pdf Safety briefings]
 
* '''Students''' -- Sasha
 
* '''Students''' -- Sasha
 +
** - Expect one student from Wuhan, paperwork is in process.
 
* '''Beam tests with the PS'''
 
* '''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'''
 
* '''Other hardware projects'''
 +
** prototype of the ECAL veto counter (?)
 
*'''Analysis/Simulation'''
 
*'''Analysis/Simulation'''
 +
** [https://halldweb.jlab.org/DocDB/0065/006576/001/glue-jefxd-igal-jaegle-09082024.pdf \eta \to \gamma\gamma\pi^0 selection criteria] -- ig
 +
 +
=Minutes=
 +
Attendees: Igal, Laveen, Sasha, Hakob, Stjepan, Phil, Olga, Susan, Jane, S.T.
 +
* Still missing 6 HV cables
 +
* Have 2 HV distribution boards, one with 6x8 and one with 12x4 configuration
 +
* PMT divider installation continues, now finished top 10 layers
 +
** Check signals with LMS:  found a few problems with solder joints, small amplitudes, bad lemo connectors, ...
 +
* Have prototype (final?) design for LMS driver board to be installed on integrating sphere
 +
* Igal gave an update on &eta;&rarr;&pi;0&gamma;&gamma; selection criteria
 +
** Tested on spring 2017 GlueX data
 +
** No signal seen
 +
** Apparent &eta;&rarr;3&pi;0 cross section ~2x larger than expected from Jon's studies -- additional background?
 +
** Machine learning suppresses 3&pi;0 background

Latest revision as of 13:11, 12 August 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 [1][2]
    • - Fix front panel of two LV distribution boards, re-install the boards on the detector frame [3]
    • - 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
    • Report from students [4]
    • Installation of HV cables [5][6]
- two remaining bundle of cables will be ready in about a week
  • 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, Laveen, Sasha, Hakob, Stjepan, Phil, Olga, Susan, Jane, S.T.

  • Still missing 6 HV cables
  • Have 2 HV distribution boards, one with 6x8 and one with 12x4 configuration
  • PMT divider installation continues, now finished top 10 layers
    • Check signals with LMS: found a few problems with solder joints, small amplitudes, bad lemo connectors, ...
  • Have prototype (final?) design for LMS driver board to be installed on integrating sphere
  • Igal gave an update on η→π0γγ selection criteria
    • Tested on spring 2017 GlueX data
    • No signal seen
    • Apparent η→3π0 cross section ~2x larger than expected from Jon's studies -- additional background?
    • Machine learning suppresses 3π0 background
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