JEF meeting, August 11, 2023
From GlueXWiki
Meeting time and location:
- 9:30 am EST (JLab time) remote only
- Connection information
Agenda
- Preparation of parts for ECAL modules -- Sasha
- Crystals:
- - 70 SICCAS crystals were shipped to us
- Received 900 short signal cables [1]
- Procurement parts for the LMS:
- - Waiting for 7,600 ft of optical fibers (August/September)
- Crystals:
- Module fabrication -- Sasha
- All modules have been fabricated, checked, and inventorized (about 1610 modules in total)
- Ongoing projects -- Sasha, all
- Visual inspections of fabricated modules [2] - done
- Prepare to move modules into Hall D [3] [4][5], wrap modules with sort towels.Moved about 800 crystals to the hall [6].
- Tested, labeled, and bundled all 100 (+ 2 spares) [7] signal cables connected from the flash ADC to the patch panel [8]. Receive cartridges for the printer, will resume labeling and cable bundling today.
- Cutting optical fibers and gluing plastic caps [9], waiting for 7600 ft of optical fibers
- Report from students
- Test fabricated modules using LMS [10], 1242 modules have been tested (need to update the wiki page)
- Work on refurbishing LG modules (wrapping, PMTs, etc.)
- Testing of PMT dividers -- Sasha / Vlad
- Received 10 dividers (first article) ! , going to test them during this week (Chris)
- Proceedures
- Installation of the FCAL2 detector & integration to GlueX -- Sasha / Arshak / Vlad / Hakob
- Detector installation [11][12][13]
- Detector installation page
- Updates from the meetings with Tim's group [14]
- Discussion of the FCAL2 installation procedures [15]
- Final mapping of low-voltage cables
- Projects for summer students
- Summer Students (2023)
- Light monitoring system -- Arshak
- Analysis/Simulation
- Island algorithm update--Simon
Minutes
Attendees: Igal, Bill, Phil, Sasha, Arshak, Malte, Jon, Liping, Axel, Igor, Olga, S.T.
- Still not have received the remaining length of fibers -- expected late August/early September?
- Continue moving crystals to Hall D (now ~1000 on shelves)
- All external (outside of dark room) cables labelled and bundled (+2 spares)
- Checking of modules using dark box and LED continuing
- Electronics for 10 first article PMT dividers arrived -- if okay plan to order full set week of 8/14/23
- Installation of FCAL-2 modules continues -- now up to middle of insert region
- Some disassembly/reassembly was need to get rid of uneven surfaces
- Inner support pipe will be reduced in length before installation
- Rely on air cooling -- expect gradient across insert
- Plan to keep temperature for FCAL-2 blocks near 15 degrees Celsius (can go down to 5 degrees Celsius)
- Arshak continuing to work on fiber ends for integrating sphere
- Discussed possibility to build new fiber profiler to use to measure shower profile
- Simon presented a proof-of-principle that we can use electron tracks in the real data to measure the profile and the S-curve dependence of the position of the showers