JEF meeting, May 24, 2024

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Meeting time and location:

Agenda

  • Preparation of parts for ECAL -- Sasha
    • - HV long cable, 18 ready (out of 36), discussion with the DSG group regarding help
    • - HV distribution boards: has not yet been designed, need 4 boards
    • - LV cables: missing about 20 cables, waiting for the last delivery batch.
    • - LV distribution boards [1]. One board out of 4 is ready, using for testing dividers Media:lv_distribution.jpg
    • - LED: prototype board is ready, have to start testing
  • Ongoing projects - All
  • Testing of PMT dividers -- Sasha / Vlad / George / Mindy
    • - File:Regulators.xlsx Map of dividers with removed regulators
    • - Testing procedure [2]
    • - All dividers have been fabricated and tested by George [3]
      • Continue removing regulators from the PCB (about 70 regulators have been removed, require re-testing dividers)
  • Installation of the FCAL2 detector & integration to GlueX -- Sasha / Vlad / Hakob / Laveen
  • Summer students -- Sasha
    • - Olivia, Ben, and Shane are on site. Expect one student from Wuhan (have to start with the paperwork)
    • - Projects: document all test results, assist with the cable/divider installation, install signal cables on patch panel, work on the ECAL monitoring plots
  • 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 (?)
      • Impact of veto on eta channels from Feb'24 collaboration meeting: File:P9.pdf
  • FCAL2 posters for open house
    • JEF/ECAL/FCAL poster (Laveen + students + feedback from all of us)
    • JEF physics poster (Laveen)
  • Analysis/Simulation

Minutes

Attendees: Sasha, Bill, Igal, Anapum, Liping, Zisis, Olga, Stjepan, Jon, Axel, Jane, S.T.

  • Sasha working on getting help on long HV cables from detector support group
  • HV distribution board design not started
  • One LV distribution board prepared
  • Prototype board for LEDs ready to be attached to integrating sphere
  • Working on removing as many voltage regulators on dividers as feasible, George from detector support group will retest
  • Installation and testing of PMT dividers in insert continues
  • Chiller test had not started as far as I know by the time of the meeting on Friday
  • Students working on detector poster for open house, Laveen made first draft of JEF physics poster
  • Discussion of what to do with "calorimeter" arm of PS setup in hall
    • Would like to use to study small-scale prototypes for understanding FCAL2, but there are some EIC projects that want to use the arm as well
    • Hall-D projects should have priority
    • xy-translation stage?
  • Discussion of inner TOF veto -- is it useful?
  • Discussion of shower reconstruction algorithm -- need to understand "efficiency" for close shower separation
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