JEF meeting, July 19, 2024
From GlueXWiki
Meeting time and location:
- 9:30 am EST (JLab time) remote only
- Connection information
Agenda
- Preparation of parts for ECAL -- Sasha
- - HV long cable, 25 ready (out of 36), discussion with the DSG group regarding help (Sammy and Mindy)
- - HV distribution boards: has not yet been designed, need 4 boards (meeting with Scot/Tim regarding installation during next week)
- - 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 [1]
- - All dividers have been fabricated and tested by George [2]
- 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
- Report from students [3]
- Installation and testing cables and dividers [4][5]
- Installation of long signal cables [6]
- Installing LV patch panels and cables [7]
- Installation of optical fibers [8]
- Detector installation page
- Safety briefings
- 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
- Abstracts for the DNP meeting and proceedings of the CALOR24 conference [9][10] [11]
- Analysis/Simulation
- Island update File:Island jul18.pdf
Minutes
Attendees: Bill, Laveen, Sasha, Axel, Vlad, Zisis, S.T.
- Paperwork for Wuhan student in progress, expect student to come late September
- New tech working on ECAL project (hv cables)
- Progress on hv distribution board: final layout
- LED driver board prepared, to be attached on integrating sphere for LMS
- UMass student working on spreadsheet containing divider test results, started by Olivia
- All long signal cables attached to patch panels
- PMT divider installation for upper half starting, plan to test one layer at a time
- 2 abstracts planned for IEEE conference (SiPM prototype, radiation hardness of active PMT base)
- Simon showed latest 2 photon separation studies with MC
- Removed all material except for BCAL+FCAL
- Efficiency for reconstruction 2 photons with large separation in insert ~100%, but still only ~90% in lead glass
- Some 3 cluster events in lead glass region have 3 distinct cluster as opposed to false splitoffs due to cluster algorithm, but cannot account for full 10% drop for large separations.