JEF meeting, July 29, 2022

Meeting time and location=

• 9:30 am EST (JLab time) remote only
• Zoom meeting ID: 161 050 9142 Passcode: 004965

Agenda

• Simulations/Analysis
  • Island algorithm update (Simon) File:Ia update 0729.pdf
• Preparation of parts for FCAL2 modules -- Sasha
  • Preparation of parts[1][2][3]
    • Preshaping ESR foils (with the DSG)
    • Wrapping crystals (with the DSG)
    • Preparing Silicon cookies
    • Module fabrication
    • Cleaning brass assemblies
    • Gluing light guides
  • Wrapped CRYTUR crystals: 654
    • All currently available (consider to borrow some spares from NPS)
• Module fabrication -- Sasha
  • Status of fabrication
  • Fabricated modules: Total 1064
    • All SICCAS 577 SICCAS
    • 487 CRYTUR, Remaining: 167
  • Clean room EEL126
• Light Monitoring System -- Arshak

Minutes

Attendees: Bill, Zisis, Phil, Tegan, Sasha, Jon, Azizah, Axel, Karthik, Liping, Jane, Olga, S.T.

• Simon gave an update on η→π0γγ signal/background studies using updated island code
  • Two parameters play off merging vs. splitting of clusters
  • Liping pointed out that Igal's presentation from previous week showed sharp cut-off in efficiency below 4 cm cluster separation
  • Igal and Simon will check for consistency, also look at quality of energy sharing between clusters
• Two technicians working on brazing brass assemblies, 2 new students working on module preparation and fabrication
• Some early modules being refurbished
• Module fabrication stalled due to missing components
  • PMT housing have all been used, new ones being annealed
  • Light guides
  • Grand total fabricated modules up to 1-64
• 50 Crytur modules arriving/month
• Moving to new lab week of August 1
• 25 PMT dividers have been prepared, put on COMCAL in January?
• Student manpower for next year: Phil to look into SULI
• Liping encouraged students to apply to present contribution to JEF project at upcoming DNP
  • Deadline August 2