Difference between revisions of "JEF meeting, March 3, 2023"
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<!-- ** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/fcal_fabrication.pdf Status of fabrication ] --> | <!-- ** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/fcal_fabrication.pdf Status of fabrication ] --> | ||
** Fabricated modules: <span style="color:#FF0000"> Total 1450 </span> (15 modules fabricated since last week) | ** Fabricated modules: <span style="color:#FF0000"> Total 1450 </span> (15 modules fabricated since last week) | ||
| − | **: | + | **: Currently available for fabrication: 32 |
<!-- *** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/module_fabrication.pdf All SICCAS 576 + 3 SICCAS] --> | <!-- *** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/module_fabrication.pdf All SICCAS 576 + 3 SICCAS] --> | ||
<!-- *** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/module_fabrication_crytur.pdf 834 CRYTUR], available: 1 --> | <!-- *** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/module_fabrication_crytur.pdf 834 CRYTUR], available: 1 --> | ||
<!-- *** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/11_11_22 Moving modules to the new lab (EEL108)] --> | <!-- *** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/11_11_22 Moving modules to the new lab (EEL108)] --> | ||
* '''[[Testing of PMT dividers]]''' -- Sasha / Arshak | * '''[[Testing of PMT dividers]]''' -- Sasha / Arshak | ||
| − | ** | + | ** FCAL2 modules with dividers installed on the CCAL [https://logbooks.jlab.org/entry/4140983] |
| − | + | ||
| − | + | ||
* '''Installation of the FCAL2 detector''' -- Sasha / Arshak | * '''Installation of the FCAL2 detector''' -- Sasha / Arshak | ||
** [https://halldweb.jlab.org/wiki/index.php/FCAL_Installation Detector installation page] | ** [https://halldweb.jlab.org/wiki/index.php/FCAL_Installation Detector installation page] | ||
| Line 33: | Line 31: | ||
** Manpower and division of tasks | ** Manpower and division of tasks | ||
** [https://halldweb.jlab.org/wiki/index.php/List_of_tasks_and_manpower Projects for summer students] | ** [https://halldweb.jlab.org/wiki/index.php/List_of_tasks_and_manpower Projects for summer students] | ||
| + | ** [https://halldweb.jlab.org/detectors/fcal2/installation/students_2023/list_of_students_2023.xlsx Summer Students (2023) ] | ||
** Meeting with the detector imaging group | ** Meeting with the detector imaging group | ||
* '''Light Monitoring System''' -- Arshak | * '''Light Monitoring System''' -- Arshak | ||
| − | |||
* '''Simulations/Analysis''' | * '''Simulations/Analysis''' | ||
** [https://halldweb.jlab.org/wiki/images/2/2e/Glue-jefxd-igal-jaegle-03032023.pdf Updates on eta to ggpi^0] -- ig | ** [https://halldweb.jlab.org/wiki/images/2/2e/Glue-jefxd-igal-jaegle-03032023.pdf Updates on eta to ggpi^0] -- ig | ||
| + | |||
| + | =Minutes= | ||
| + | Attendees: Sasha,Bill,Igal,Olga,Susan,Liping,Jane,Arshak,Axel,S.T. | ||
| + | * Total number of fabricated modules = 1450 | ||
| + | ** 32 wrapped, ready to be assembled into FCAL-2 modules | ||
| + | ** After March 20 (end of run) can convert 20 COMCAL modules into FCAL-2 modules | ||
| + | ** 95 Crytur crystals expected late April/early May -- plan to get students involved with module fabrication | ||
| + | * Detector support group working on shaping ESR in preparation for new Crytur modules | ||
| + | * 60 PMT housings still missing -- these have been reordered | ||
| + | ** 2 month lead time (could be 4 months) | ||
| + | * New PMT dividers have been installed in 5x5 COMCAL array | ||
| + | ** Installed in hall D -- study rates using beam | ||
| + | ** Plan to use for TAC (flux normalization) run | ||
| + | ** Plan to replace unshielded ribbon cables and connectors for LV distribution with locking connectors and shielded ribbon cables | ||
| + | * More (first article) dividers have been ordered, due next week | ||
| + | * First look at response of 5x5 array of FCAL-2 modules | ||
| + | ** Inner module nearest beam saw 2 MHz rate (not shielded by tungsten absorber, planned for actual insert) | ||
| + | ** Expect ~1 MHz rate in inner modules for FCAL-2 insert | ||
| + | * Schedule for students during summer coming into focus | ||
| + | * Sasha discussed with Hovanes regarding controls | ||
| + | * Arshak to give final report on LMS developments next week | ||
| + | * Igal presented studies of the impact of including proposed GEMTRD at exit of solenoid on the η→π0γγ channel | ||
| + | ** This is in response to a proposed 10-day experiment to study GEMTRD for e/π separation relevant for J/Ψ studies | ||
| + | ** This prompted a lively discussion about the impact on the JEF program | ||
| + | ** Inclusion of additional material likely to cause signal loss and increased background | ||
| + | ** Would prefer to not have this 10-day proposal run concurrently with JEF/GlueX | ||
| + | * Igal also showed distributions of separations between clusters for η→3π0 | ||
| + | ** Most clusters are separated by distances far above where merging becomes an issue, but the BR is so much larger than the rare decay that cluster merging still needs attention | ||
Latest revision as of 16:29, 3 March 2023
Meeting time and location:
- 9:30 am EST (JLab time) remote only
- Zoom meeting ID: 161 050 9142 Passcode: 004965
Agenda
- Preparation of parts for FCAL2 modules -- Sasha
- Available crystals:
- 1450 (modules)
- 32 (ready for fabrication)
- 40 (installed on CCAL) available on March 20
- (some CCAL crystals from the inner part will not be used for the FCAL2)
- 95 expect to receive from CRYTUR in May [1]
- Total 1617
- Wrapped crystals: 32 (Mindy)
- George (DSG group) finished with disassembling CCAL modules and removing LMS caps
- (work on preshaping of ESR reflectors for CRYTUR)
- Mindy (DSG group) solder wires to sockets (while waiting for crystals)
- Parts. 60 remaining PMT housings and cylinders have been ordered by Tim (should be ready for fabrication in about 2 months)
- Available crystals:
- Module fabrication -- Sasha
- Fabricated modules: Total 1450 (15 modules fabricated since last week)
- Currently available for fabrication: 32
- Fabricated modules: Total 1450 (15 modules fabricated since last week)
- Testing of PMT dividers -- Sasha / Arshak
- FCAL2 modules with dividers installed on the CCAL [2]
- Installation of the FCAL2 detector -- Sasha / Arshak
- Detector installation page
- Updates from the meetings with Tim's group
- Manpower and division of tasks
- Projects for summer students
- Summer Students (2023)
- Meeting with the detector imaging group
- Light Monitoring System -- Arshak
- Simulations/Analysis
- Updates on eta to ggpi^0 -- ig
Minutes
Attendees: Sasha,Bill,Igal,Olga,Susan,Liping,Jane,Arshak,Axel,S.T.
- Total number of fabricated modules = 1450
- 32 wrapped, ready to be assembled into FCAL-2 modules
- After March 20 (end of run) can convert 20 COMCAL modules into FCAL-2 modules
- 95 Crytur crystals expected late April/early May -- plan to get students involved with module fabrication
- Detector support group working on shaping ESR in preparation for new Crytur modules
- 60 PMT housings still missing -- these have been reordered
- 2 month lead time (could be 4 months)
- New PMT dividers have been installed in 5x5 COMCAL array
- Installed in hall D -- study rates using beam
- Plan to use for TAC (flux normalization) run
- Plan to replace unshielded ribbon cables and connectors for LV distribution with locking connectors and shielded ribbon cables
- More (first article) dividers have been ordered, due next week
- First look at response of 5x5 array of FCAL-2 modules
- Inner module nearest beam saw 2 MHz rate (not shielded by tungsten absorber, planned for actual insert)
- Expect ~1 MHz rate in inner modules for FCAL-2 insert
- Schedule for students during summer coming into focus
- Sasha discussed with Hovanes regarding controls
- Arshak to give final report on LMS developments next week
- Igal presented studies of the impact of including proposed GEMTRD at exit of solenoid on the η→π0γγ channel
- This is in response to a proposed 10-day experiment to study GEMTRD for e/π separation relevant for J/Ψ studies
- This prompted a lively discussion about the impact on the JEF program
- Inclusion of additional material likely to cause signal loss and increased background
- Would prefer to not have this 10-day proposal run concurrently with JEF/GlueX
- Igal also showed distributions of separations between clusters for η→3π0
- Most clusters are separated by distances far above where merging becomes an issue, but the BR is so much larger than the rare decay that cluster merging still needs attention
