JEF meeting, November 12, 2021
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Meeting time and location= 9:30 am EST (JLab time) Bluejeans only
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Agenda
- SICCAS crystals
- Module fabrication
- - New SICCAS crystals --Sasha
- - Beam test of fabricated modules
- COMCAL tests, TAC running, etc.
- Data analysis
- Simulations
Minutes
Attendees: Sasha,Olga,Phil,Bill,Zisis,Liping,Arshak,Tim B.,S.T.
- Management considering backup plan if SICCAS fails to deliver crystals
- Plan to report to management regarding status; also considering writing a letter
- Azizah is working on event samples for split-off studies
- Expect fabrication of modules to resume in December after end of SRC-CT experiment
- Still need manpower, hope for student manpower in summer of next year
- PMTs continuing to arrive at lab, need to check diameters
- Sasha installed 12 modules to check using PS setup in hall
- Read out with PS trigger, looked at image of each module on the PS
- Looked at single module resolutions = ~2.5-3% σE/E
- Sasha also looked at a set of 12 crystals (9 CRYTUR, 3 SICCAS) with optical grease between crystal and PMT
- Does not see much systematic difference between coupling with optical grease and actual production version using light guide and cookie
- SICCAS crystals: 1 brown, 1 scratched, 1 "ok": brown crystal showed largest deviation from average energy resolution