JEF meeting, May 31, 2024
From GlueXWiki
Meeting time and location:
- 9:30 am EST (JLab time) remote only
- Connection information
Agenda
Agenda
- Preparation of parts for ECAL -- Sasha
- - HV long cable, 18 ready (out of 36), discussion with the DSG group regarding help
- - HV distribution boards: has not yet been designed, need 4 boards
- - LV cables: missing about 20 cables, waiting for the last delivery batch.
- - LV distribution boards [1]. One board out of 4 is ready, using for testing dividers Media:lv_distribution.jpg
- - LED: prototype board is ready, have to start testing
- Ongoing projects - All
- Testing of PMT dividers -- Sasha / Vlad / George / Mindy
- - File:Regulators.xlsx Map of dividers with removed regulators
- - Testing procedure [2]
- - All dividers have been fabricated and tested by George [3]
- Continue removing regulators from the PCB (about 70 regulators have been removed, require re-testing dividers)
- Installation of the FCAL2 detector & integration to GlueX -- Sasha / Vlad / Hakob / Laveen
- Installation and testing cables and dividers [4] [5]
- Detector installation page
- Summer students -- Sasha
- - Olivia, Ben, and Shane are on site. Expect one student from Wuhan (have to start with the paperwork)
- - Projects: document all test results, assist with the cable/divider installation, install signal cables on patch panel, work on the ECAL monitoring plots
- Beam tests with the PS
- measure shower beam profile and reconstruction in the crystal/LG transition region
- (install prototype with 5x5 PbWO4 modules + ? LG)
- Other hardware projects
- prototype of the ECAL veto counter (?)
- FCAL2 posters for open house** File:1-OH24-Poster-H-Laveen-revised4.pdf
- Analysis/Simulation
- Challenges in Rare-Decay Measurements (Liping Gan)
Minutes
Attendees: Igal, Phil, Olga, Ben, Shane, Sasha, Liping, Laveen, Stjepan, Jon, Jane, Olivia, Ilya, S.T.
- Sasha's talk at the CALOR2024 conference was well received.
- All cables are in house, hope to get some help from detector support group with these
- Laveen continues to label and test cables
- Chris S. to start working on HV distribution board design
- Installation of PMT dividers in ECAL continues (now have installed 16 layers)
- Found and fixed 2 problems
- Drafts for 2 posters (one from Laveen on JEF physics and one from students on hardware) presented and feedback given
- Liping gave a presentation on the issues facing extraction of rare η decays
- Non-rare decays can lead to large backgrounds for rare decays
- For η→π0γγ need to suppress both shower overlaps and false shower splits --> use island algorithm
- Showed examples of usage of island algorithm compared to our implementation
- Apparent 10% inefficiency at large shower separations needs to be understood
- Showed examples of usage of island algorithm compared to our implementation