JEF meeting, November 3, 2023

Meeting time and location:

• 10:30 am EST (JLab time) remote only
• Connection information

Agenda

• Preparation of parts for ECAL -- Sasha
  • - signal cables: all cables are ready. Received 75 long cables. They have been tested, labeled and bundled (will be used to replace FCAL cables removed from the FCAL)
  • - signal patch panels are ready [1]
  • - HV cables: have received 100 short cables, have been testes and labeled. 320 cables are ready for installation. 36 long cables are in production
  • - HV distribution boards: Chris is finalizing design of the distribution board, should order 4 boards soon.
  • - LV cables: ordered, lead time unclear
  • - LV distribution boards: met with Chris and Stephanie on Monday last week. The design of the LV distribution board has been finalized.
  • - Optical fibers: received all
• Ongoing projects -- Sasha, all
  • - Testing and labeling cables (Recently labeled cables in boxes)[2]
  • - Prepare modules for the TAC and prototypes (using crystals with some imperfections) [3]
    • Wrapped crystals
    • Parts for TAC[4]. Chris D. and Keith prepared brass straps assemblies.
    • Modules for prototype (25 are ready). All parts are ready to assemble 30 CCAL-style modules.
  • - Polished 320 fiber plastic caps, all fibers are ready. Meeting with Stephanie and Tim, 3-D printed a mounting plate to couple with the integrating sphere [5]
  • - Installation of the trigger and readout electronics
    • - 7 VXS crate, 3 HV crates, and 1 LV (Wiener) crate have been installed. Power lines will be installed in a week.
    • - Installed flash ADC, SDs, TIs. Uploaded new firmware [6]
    • - Work on the installation of ROCs and VTPs (with Ben R.)
  • - Summer Students (2023)
• Testing of PMT dividers -- Sasha / Vlad / Aoran / Boaxin
  • - Testing procedure [7]
  • - Tested 178 dividers [8]
• Installation of the FCAL2 detector & integration to GlueX -- Sasha / Vlad / Hakob
  • Detector installation [9][10][11]
  • Detector survey
  • Installation of racks [12][13]
  • Detector installation page
  • Updates from the meetings with Tim's group [14]
  • Discussion of the FCAL2 installation procedures [15]
• Light monitoring system
  • Plastic caps have been glued to all fibers
• Returning low-quality crystals to SICCAS -- Sasha
  • 11 crystals were wrapped and placed into the box; they are ready for shipment to SICCAS [16]

• Analysis/Simulation

Minutes

Attendees: Sasha, Arshak, Phil, Liping, Igal, Jon, Olga, Jane, Vlad B., S.T.

• 75 long signal cables arrived (out of 400)
  • Also using unused cables from FCAL, which are different in length by about 5 feet --> slightly different timing delays
• LV patch panel design finalized
• HV distribution being finalized
• LV cables have not arrived
• All optical parts for LMS are here
• 100 short HV cables tested and labled (2 bad cables found)
• Parts for making several small-scale lead tungstate detectors are ready
  • 3x3 array for use in PS test setup in hall
  • 5x5 array for measuring energy resolution, study shower profile -- using ECAL design
    • Fiber profiler?
  • 5x5 array to replace TAC using COMCAL design (no light guides)
• 320 donuts for LMS polished
• 3D printed disk with many holes for fibers for interface to integrating sphere has been constructed
• Electronics for ECAL has been installed in hall
  • Found 2 bad flash ADC modules
  • Working on ROC/VTP installation
  • Aoran putting components into database
• Checking of PMT dividers underway (recording waveform and peak amplitude)
  • 178 with PMT socket, found 3 bad dividers
  • Discussion with radcon regarding radiation damage
• Canbus cables for lead glass being installed
• Plexiglas for lead glass LMS not ready yet
• 11 bad crystals sent back to SICCAS
• Discussion regarding GlueX-III/JEF extension onging