JEF meeting, August 18, 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:
- Received 960 short signal cables [3]
- Procurement parts for the LMS:
- - Waiting for 7,600 ft of optical fibers (August/September)
- 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 [4] - done
- Prepare to move modules into Hall D [5] [6][7], wrap modules with sort towels. Need to move about 100 modules to the Hall.
- Tested, labeled, and bundled all 100 (+ 2 spares) [8] signal cables connected from the flash ADC to the patch panel [9] - done
- Test and label 960 short signal cables - ongoing
- Tested fabricated modules using LMS [10] - done (need to update the wiki page)
- Cutting optical fibers and gluing plastic caps [11], waiting for 7600 ft of optical fibers
- Work on refurbishing LG modules. About 60 modules have to be checked / fixed (rejected during installation)
- Report from students
- 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 [12][13][14]
- Detector installation page
- Updates from the meetings with Tim's group [15]
- Discussion of the FCAL2 installation procedures [16]
- Final mapping of low-voltage cables
- Mindy continues with wrapping crystals and soldering wires to sockets.
- Projects for summer students
- Summer Students (2023)
- Light monitoring system -- Arshak
- Writeup on FCAL-2 for JLab newsletter
Minutes
Attendees: Sasha, Bill, Axel, Jon, Zisis, Olga, Phil, Liping, S.T.
- Received 70 SICCAS crystals
- 66 pre-selected by Jane's group + 4 from previous batch (these look terrible!)
- 960 short signal cables labelled and tested -- 1 found to be bad
- No update on arrival of remaining LMS fibers
- Visual inspection of fabricated modules done, in process of moving modules to Hall D
- All modules tested using LMS and dark box, found 2 bad PMTs (have been replaced)
- Stacking continues in hall: now 1286 lead glass + 996 lead tungstate modules have been installed
- Had to replace some modules due to surface imperfections
- Survey group checked flatness/slope at current stage of construction, no major issues observed
- Sasha communicated with detector support group to provide further support when Arshak leaves
- Mindy from detector support group continues wrapping modules
- Plan to arrange with JLab communications office to highlight FCAL-2/JEF
- Phil also discussed press release from his institution