JEF meeting, February 16, 2024
From GlueXWiki
Meeting time and location:
- 9:30 am EST (JLab time) remote only
- Connection information
Agenda
- Preparation of parts for ECAL -- Sasha
- - signal cables - done
- - signal patch panel [1] - done
- - HV cables: received 165 cables 1445 in total
- - HV distribution boards: in preparation
- - LV cables: 100 cables received, 250 cables in total
- - LV distribution boards. Received 4 boards, performed initial cehck, need to solder connectors [2]
- - Optical fibers and parts for the trigger/DAQ have been ordered
- Ongoing projects -- Sasha, all
- - Testing and labeling cables, 100 short LV cables tested and labeled during this week.
- - Prepare modules for the TAC and prototypes (using crystals with some imperfections)
- - Radiation tests of the PMT active base [5]
- Finished tests, working on the tech note
- - Inventory database and GUI for installed electronics
- - Summer Students (2023)
- Testing of PMT dividers -- Sasha / Vlad / George
- Installation of the FCAL2 detector & integration to GlueX -- Sasha / Vlad
- Analysis/Simulation
- Rough draft of Feb. collaboration talk -- Simon
- updates -- ig
Minutes
Attendees: Sasha, Bill, Igal, Liping, Vlad, Laveen, Zisis, Stjepan, Olga, Susan, Jane, Jon, S.T.
- Chris S. fabricating dividers, George J. from detector support group testing them (134 last week)
- ~100 to be tested
- Fabrication quality improved (only one "bad", already fixed)
- Expect to use 3x amplier ~10x10 array around beam pipe due to high rate
- Also plan to run at lower HV than others
- Cables/dividers installed up to third row from bottom of insert
- Desigining tool for replacing dividers: laparoscopy grasping forceps
- Testing dividers in place with HV (make light tight first)
- LMS installation continues
- Needed to order face shield due to UV light backsplash
- Fibers ordered into bundles, clamped and clamps attached to plexiglas
- Position of integrating sphere to be fixed
- Some bad fibers identified, moved to side
- S.T. showed look at simulation of a small inner TOF counter covering the hole not covered by the regular TOF
- Rates in 1 mm wide strips look manageable
- Need to check impact of new veto on golden channel
- Beam test in March: only GEMTRD studies, nothing else turned on
- Hopefully no significant activation in inner region of insert
- Igal studying golden channel using low level objects (not DReactionFilter)
- Chi^2 test to select best candidate per event
- BCAL veto needed to get rid of ω background
- TOF veto not as effective as originally thought after TOF bug in simulation found and fixed
- Working with Daniel L. on machine learning algorithm