Revision as of 13:10, 12 August 2024

Meeting time and location:

• 9:30 am EST (JLab time) remote only
• Connection information

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

• • Installation and testing cables and dividers [7][8]
  • Installation of long signal cables [9]
  • Installation LV patch panels and cables [10]
  • Installation of optical fibers [11]
  • Detector installation page
  • Safety briefings
• 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
  • \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 η→&pi0;γγ 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