Agenda

Preparation of parts for ECAL -- Sasha
- - HV long cable: Sammy and Mindy have to assemble 10 cables
- - HV distribution boards [1][2]
- - Fix front panel of two LV distribution boards, re-install the boards on the detector frame [3]
- - LED: Started testing the prototype of the LMS (need to make the detector room light tight)
Installation of the FCAL2 detector & integration to GlueX -- Sasha / Vlad / Hakob / Laveen
- Report from students [4]
- Installation of HV cables [5][6]

- two remaining bundle of cables will be ready in about a week

- Installation and testing cables and dividers [7][8]
- Installation of long signal cables [9]
- Installation LV patch panels and cables [10]
- Installation of optical fibers [11]
- Detector installation page
- Safety briefings
Students -- Sasha
- - Expect one student from Wuhan, paperwork is in process.
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 (?)
Analysis/Simulation
- \eta \to \gamma\gamma\pi^0 selection criteria -- ig

Minutes

Attendees: Igal, Laveen, Sasha, Hakob, Stjepan, Phil, Olga, Susan, Jane, S.T.

Still missing 6 HV cables
Have 2 HV distribution boards, one with 6x8 and one with 12x4 configuration
PMT divider installation continues, now finished top 10 layers
- Check signals with LMS: found a few problems with solder joints, small amplitudes, bad lemo connectors, ...
Have prototype (final?) design for LMS driver board to be installed on integrating sphere
Igal gave an update on η→π0γγ selection criteria
- Tested on spring 2017 GlueX data
- No signal seen
- Apparent η→3π0 cross section ~2x larger than expected from Jon's studies -- additional background?
- Machine learning suppresses 3π0 background