Difference between revisions of "JEF meeting, August 25, 2023"
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* '''Ongoing projects''' -- Sasha, all | * '''Ongoing projects''' -- Sasha, all | ||
** Visual inspections of fabricated modules [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/19_05_2023/modules_qa.docx] - done | ** Visual inspections of fabricated modules [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/19_05_2023/modules_qa.docx] - done | ||
− | ** | + | ** All crystals moved to Hall D[https://halldweb.jlab.org/detectors/fcal2/installation/photos/move_to_halld/prepare_to_move.jpg] [https://halldweb.jlab.org/detectors/fcal2/installation/photos/move_to_halld/prepare_to_move1.jpg][https://halldweb.jlab.org/detectors/fcal2/installation/photos/move_to_halld/prepare_to_move2.jpg]. |
** Tested, labeled, and bundled all 100 (+ 2 spares) [https://halldweb.jlab.org/detectors/fcal2/installation/photos/label_signal/signal_bundles.jpg] signal cables connected from the flash ADC to the patch panel [https://halldweb.jlab.org/wiki/index.php/Testing_and_labeling_cables] - done | ** Tested, labeled, and bundled all 100 (+ 2 spares) [https://halldweb.jlab.org/detectors/fcal2/installation/photos/label_signal/signal_bundles.jpg] signal cables connected from the flash ADC to the patch panel [https://halldweb.jlab.org/wiki/index.php/Testing_and_labeling_cables] - done | ||
− | ** Test and label | + | ** Test and label 1100 short signal cables - ongoing |
** Tested fabricated modules using LMS [https://halldweb.jlab.org/wiki/index.php/Testing_ECAL_modules] - done (need to update the wiki page) | ** Tested fabricated modules using LMS [https://halldweb.jlab.org/wiki/index.php/Testing_ECAL_modules] - done (need to update the wiki page) | ||
** Cutting optical fibers and gluing plastic caps [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/06_23_2023/glue_caps.jpg], waiting for 7600 ft of optical fibers | ** Cutting optical fibers and gluing plastic caps [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/06_23_2023/glue_caps.jpg], waiting for 7600 ft of optical fibers | ||
− | ** Work on refurbishing LG modules. About | + | ** Work on refurbishing LG modules. About 80 modules have small imperfections and have to be fixed (rejected during installation) |
+ | **:- Mindy is re-wrapping crystals (12 during last week). She also continues soldering wires to the PMT connectors | ||
** [https://docs.google.com/presentation/d/1euIA49SszoQmSM4Lxu1OtZ8OfjltgwzXIbXo6TPEB3s/edit#slide=id.p Report from students] | ** [https://docs.google.com/presentation/d/1euIA49SszoQmSM4Lxu1OtZ8OfjltgwzXIbXo6TPEB3s/edit#slide=id.p Report from students] | ||
* '''[[Testing of PMT dividers]]''' -- Sasha / Vlad | * '''[[Testing of PMT dividers]]''' -- Sasha / Vlad | ||
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<!-- ** [https://halldweb.jlab.org/detectors/fcal2/installation/photos Disassembling FCAL] --> | <!-- ** [https://halldweb.jlab.org/detectors/fcal2/installation/photos Disassembling FCAL] --> | ||
*'''Light monitoring system''' -- Arshak | *'''Light monitoring system''' -- Arshak | ||
+ | |||
+ | =Minutes= | ||
+ | Attendees: Igor, Igal, Arshak, Jane, Olga, Bill, Zisis, Sasha, Liping, Jon, Malte, Phil, S.T. | ||
+ | * Found 8 chipped + 4 low quality SICCAS crystals out of set of 70 of the final batch -- likely send them back | ||
+ | * Short signal cables continue to arrive, expect ~600 more | ||
+ | * All fabricated modules have been moved to the hall | ||
+ | ** All inspected visually, tested with LMS in dark box | ||
+ | ** Dimensions measured using calipers | ||
+ | ** Sorting in preparation for installation | ||
+ | * Still expecting last batch of fibers for LMS | ||
+ | * Minding from detector support group continues to re-wrap modules that have issues | ||
+ | * Installation of modules in FCAL continues -- now 1196 ECAL+1400 LG | ||
+ | ** Need to be careful -- crystals are very brittle, found 3 cracked lead tungstate crystals + 1 cracked LG block; required partial unstacking and restacking | ||
+ | * Discussed fiber veto for region near beam line not covered by TOF scintillators | ||
+ | * Tungsten absorber with holes for optical fibers on the way |
Latest revision as of 07:58, 28 August 2023
Meeting time and location:
- 9:30 am EST (JLab time) remote only
- Connection information
Agenda
- Preparation of parts for ECAL modules -- Sasha
- Crystals:
- Received 1100 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
- All crystals moved to Hall D[5] [6][7].
- 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 1100 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 80 modules have small imperfections and have to be fixed (rejected during installation)
- - Mindy is re-wrapping crystals (12 during last week). She also continues soldering wires to the PMT connectors
- 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
Minutes
Attendees: Igor, Igal, Arshak, Jane, Olga, Bill, Zisis, Sasha, Liping, Jon, Malte, Phil, S.T.
- Found 8 chipped + 4 low quality SICCAS crystals out of set of 70 of the final batch -- likely send them back
- Short signal cables continue to arrive, expect ~600 more
- All fabricated modules have been moved to the hall
- All inspected visually, tested with LMS in dark box
- Dimensions measured using calipers
- Sorting in preparation for installation
- Still expecting last batch of fibers for LMS
- Minding from detector support group continues to re-wrap modules that have issues
- Installation of modules in FCAL continues -- now 1196 ECAL+1400 LG
- Need to be careful -- crystals are very brittle, found 3 cracked lead tungstate crystals + 1 cracked LG block; required partial unstacking and restacking
- Discussed fiber veto for region near beam line not covered by TOF scintillators
- Tungsten absorber with holes for optical fibers on the way