JEF meeting, April 12, 2024

Meeting time and location:

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

Agenda

• Preparation of parts for ECAL -- Sasha
  • - signal cables - done
  • - signal patch panel [1] - done
  • - HV short cables: received, checked, labeled (last week)
  • - HV long cable, 18 ready (out of 36)
  • - HV distribution boards: in preparation
  • - LV cables: waiting for about 440 cables (will need to test, label, and bundle)
  • - LV distribution boards [2]. Have to populate with connectors, and design a box around the PCB
• Ongoing projects
  • - Bundling short cables (groups of 7, 7, and 6 cables): signal (done), HV (done), LV (29 layers done, waiting for cables)
  • - Testing, labeling, and bundling LV cables [3] [4] [5]
• Testing of PMT dividers -- Sasha / Vlad / George / Mindy
  • - Testing procedure [6]
  • - Mindy has finished with preparing all sockets (~1650) !
  • - All dividers have been fabricated
  • - Need to remove power regulators on about 200 dividers
  • - George has tested about 1400 dividers [7].
  • - Adding ECAL (and updating FCAL) translation table in the TT.DB (needed for EPICS scalers)
• Installation of the FCAL2 detector & integration to GlueX -- Sasha / Vlad / Hakob / Laveen
  • All ePASes are ready for the installation -- Sasha and Vlad
    • - need to prepare one for testing dividers and maintenance
  • Installation of the LMS
    • 1325 fibers have been installed [8]
  • Cable and divider installation [9][10][11]
  • Bundles with optical fibers for the trigger have been installed (Chris, Armen, Mark). Need to install 2 patch panels [12]
  • Receive optical network fibers. Will install them as well as the network switch during next week [13]
  • 7 VXS controllers can be booted now [14]
  • Detector installation page
    • (links from the previous meetings [15][16][17])
  • Other hardware projects
    • --prototype of the ECAL veto counter
    • --study shower profile using PS (also transition region between lead tungstate and LG modules (?) )
• Analysis/Simulation
• FCAL2 poster for open house?
  • JEF/ECAL/FCAL poster
  • exhibit stand (modules, PMTs, etc.)

Minutes

Attendees: Bill, Laveen, Liping, Phil, Igal, Sasha, Vlad, Axel, Olga, Stjepan, S.T .

• Phil is sending a masters student to the lab to work with Igal on ML project
• Have all short HV cables, long cables need to have connectors added
• Work on HV distribution board has not started yet
• Waiting for 440 LV cables
• Bundling/labeling/testing of existing cables continues
• Laveen worked on python script for translation table
• All PMT sockets prepared, work on fabricating dividers continues (~200 need to have LV power regulators removed -- these will need to be retested)
• ~1400 dividers have been tested so far (some suspicious dividers have been identified and repaired)
  • Plan to install row by row, make light tight to test a couple rows at a time
  • Tool for installing dividers has arrived
• Safety ePASes have been prepared for installation/testing/maintenance
• LMS fiber installation continues -- ~83% done
• Optical fibers for trigger supervisor installed
  • Need to install 2 optical patch panels
  • Need network switch
  • 7 VXS controllers booted, need IP address for crate trigger processor
• Plan to work on 2 poster for upcoming open house (JEF physics + FCAL2 hardware)
  • Will also have table for hardware show-and-tell