Difference between revisions of "JEF meeting, September 9, 2022"
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* Light Monitoring System -- Arshak | * Light Monitoring System -- Arshak | ||
**https://halldweb.jlab.org/DocDB/0057/005729/002/LMS_report_v1.pdf | **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 | ||
Latest revision as of 08:20, 12 September 2022
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
- Module fabrication -- Sasha
- Light Monitoring System -- Arshak
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
