JEF meeting, December 8, 2023
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: Received all needed long cables. Redid and tested 4 bundles. All cables are ready.
- - signal patch panels are ready [1]
- - HV cables: 800 cables are ready for installation. Long cables are in production
- - HV distribution boards: Chris is finalizing design of the distribution board, should order 4 boards soon.
- - LV cables: ordered, lead time unclear
- - LV distribution boards. The LV distribution boards have been ordered.
- - Optical fibers: received all
- Ongoing projects -- Sasha, all
- - Testing and labeling cables (Recently labeled cables in boxes)[2]
- - Prepare modules for the TAC and prototypes (using crystals with some imperfections) [3]
- Wrapped crystals - done
- Parts for TAC[4] - done
- Prepared 26 modules for TAC and 35 modules for beam tests - done
- - Preparation of the LMS
- - Radiation tests of the PMT active base [10]
- - Summer Students (2023)
- Testing of PMT dividers -- Sasha / Vlad / Aoran
- Installation of the FCAL2 detector & integration to GlueX -- Sasha / Vlad / Hakob
- Detector installation [13][14][15]
- Detector survey
- - waiting for survey results
- Detector installation page
- Updates from the meetings with Tim's group [16]
- Meeting with Chris Cuevas regarding installing optical fibers and patch panels
- Installation of electronics [17]
- Lead Glass Efforts -- Malte / Mark / Kevin / Zisis
- Analysis/Simulation
Minutes
Attendees: Liping, Sasha, Igla, Aoran, Stjepan, Zisis, Olga, Jane, Jon. S. T.
- All signal cables ready, have half of short HV cables, long HV cables in production
- LV distribution board design finalized, boards ordered (2 week lead time + 1 week to populate)
- Waiting for LV cables -- received first article
- LMS fibers glued to moujutinge plate, in process making everything light tight
- Met with Fernando regarding LED pulser
- Use one port in integrating sphere to inject light
- Use CAEN1495 module to generate pulse
- PMT divider tests continue
- PMT divider radiation tests completed (total expoasure = 50 kRad)
- Amplitude degrades with dose
- Made visual inspection of FCAL, taking note of location of shims
- Also looking for bubbles in cookie interface -- may need retorquing
- Found one suspicious PMT -- practice removal?
- Requested survey of FCAL-2 perimeter
- No power on FCAL platform yet, expected in January
- Optical fibers for DAQ will be installed in January/February
- Magnetic shielding for reference PMTs for LMS system will be needed
- Installation of plexiglas for lead glass LMS system underway
- Fiber LMS system for insert will be installed in January, then installation of cables, PMT dividers, etc. will take 3-4 months
- Expecting beam profiler from U.Regina in January, to replace existing rad-damaged profiler
- Maybe could refurbish old profiler to use for shower profile measurements
- Plan to build 5x5 ECAL array with some LG surrounding, measure properties in transition region