JEF meeting, October 21, 2022
From GlueXWiki
Meeting time and location:
- 9:30 am EST (JLab time) remote only
- Zoom meeting ID: 161 050 9142 Passcode: 004965
Agenda
- Simulations/Analysis
- Preparation of parts for FCAL2 modules -- Sasha
- Order 25 CRYTUR crystals (Total 1613 + 25 = 1638)
- Wrapped CRYTUR crystals: 727
- Available for wrapping: 762 - 727 = 35
- DSG group continues wrapping
- List of available parts
- Module fabrication -- Sasha
- Status of fabrication
- Fabricated modules: Total 1303 (5 modules fabricated since last week)
- All SICCAS 576 SICCAS
- 727 CRYTUR, available: 35
- Updates from the FCAL installation meetings with Tim's group -- Sasha
- Light Monitoring System -- Arshak
- DNP practice talk: Philip Cole, Engaging Undergraduate Students in Constructing the PbWO4 Calorimeter for the JEF Experiment at JLab
Minutes
Attendees: Igal, Phil, Arshak, Sasha, Zisis, Liping, Axel, Jane, Bill, Jon, Sean, S.T.
- Module fabrication room has a humidity issue
- Soft iron starting to become rusty
- De-humidifier has been installed: 60% humididy -> 20% humidity
- New lab is available elsewhere in EEL building but want to minimize movement of crystals (also not humidity controlled!)
- PR for 25 Crytur crystals has been signed -> would lead to 42 spares
- Wrapping continues (35 crystals remaining)
- All PMTs received
- 1540 light guides have been glued to PMTs to date (not all wrapped yet)
- PMT housing: waiting for ~200 pieces
- Received brass straps, need ~250
- Fabricated modules: 1303, expect 65 crystals by the end of the year, can fabricate 100 more this year
- Installation meetings every 2 weeks
- Discussed lead glass unstacking + possible refurbishment
- Store on shelves sorted according to various potential problems
- Some PMTs may need to be replaced because the HV is currently at the maximum 1.8 kV
- Some dividers may need to be replaced due to high current draw
- Will discuss location of racks + cabling
- LMS design needs to be finalized (likely go with plexiglas)
- Manpower from students? Sasha working on task division
- Test set of crystals in dark box?
- Discussed lead glass unstacking + possible refurbishment
- Phil gave a nice practice talk on student efforts for the DNP