JEF meeting, May 24, 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, 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
  • - Update from Laveen
• 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
  • Installation and testing cables and dividers [4] [5]
  • Detector installation page
• 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