Agenda

Simulations/Analysis
Preparation of parts for FCAL2 modules -- Sasha
Module fabrication -- Sasha
Light Monitoring System -- Arshak
- https://halldweb.jlab.org/DocDB/0057/005729/002/LMS_report_v1.pdf

Minutes

Attendees: Sasha, Tegan, Arshak, Zisis, Phil, Jon, Olga, Jane, Liping, Tim B., Axel., S.T.

10 more Crytur crystals arrived -- delivery rate is ~40-50/month
Sasha met with Tim and Fernando regarding installation plans for next year
- Want thin readout cables with (rather expensive) lemo connectors
- Plan to make meeting more regular
75 more PMT housing units are arriving soon
Light guides becoming available
Waiting for brass straps (need ~300)
Detector support group working on wrapping modules
Module production to resume this week
Sasha plans to test PMT dividers before collaboration meeting
- NPS saw noise issues -- hopefully with our lower amplifier gain this will not be an issue
Arshak is preparing a report on LMS efforts
- Current design uses 2 plexiglas pieces
- Uniformity at the level of 20% except near edges -- working on attenuation of the light in these regions
- Light input currently from both top and sides -- Sasha suggested maybe switch to sides only?
- Suggested stack some crystals near plexiglas, check for crosstalk
- Will need to redo FCAL2 plexiglas (need to cut out the inner part) -- maybe need new plexiglas?
- Plan to use FCAL system for control