Connection =

Meeting time and location:

Agenda

Preparation of parts for ECAL -- Sasha

-Four boxes for HV distribution boards have arrived to the lab. PCBs with HV connectors were installed on 2 distribution boards [1][2]

-Updated design of the LMS light source with 25 LEDS. PCB layout under preparation, expect to order the new PCB during next week.

-Four temperature sensors (RTD) arrived to the lab. They will be installed in the ECAL divider region during next week.

-Two additional fans for cooling the ECAL dividers arrived. Will be installed today.

-Installation of the FCAL2 detector & integration to GlueX -- Sasha, All

- rocecal3 crate was fixed [4] (initial DAQ implementation [5])

- implementing flash ADC scalers [6][7]

- translation table for the ECAL (finalize/check translation DB, generate xml file, import to the CCDB) - done [8]

- implementing and verifying ECAL LMS trigger [9]

- implementing and verifying the ECAL physics trigger. First event reconstructed using the GlueX software [10]

- Start implementing VTP trigger modules. Requires modification of firmware. The trigger crates may be unavailable for 1 - 1.5 months.

- The VTP was installed in the D2-1-TOP crate, IP address assigned, and can be booted now

- New version of DAQ, VTP included as a DAQ component [11]

Installation of scintillating paddles for cosmic tests [12] [13][14]
ECAL HV interlock check [15]
Cable map of the ECAL LG modules after installing ECAL [16]
Reinstalling cables on the ECAL LV distribution board [17]
Safety briefings - Vlad, Sasha
Detector installation page
Commissioning north part of the ECAL (instrumented with 2 temporary HV distribution boards) [18][19][20][21][22]
Commissioning of the south bottom region [23]
Commissioning of the south top region [24]
Commissioning of the top north region [25]
Commissioning of the bottom north region [26]
All HV distribution boards installed, set HV on the whole detector [27]
Fix LV issues (north top region) [28]
First cosmic event in the ECAL [29]
Temperature scan in the ECAL divider region [30][31][32]/4321188 [33]

Meeting with Tim, additional fans will be installed

- Removing Tedlar from the face of the detector [36]

- ECAL flash ADC scalers before removing detector face cover [37]

EPAS for Maintenance of the Hall D ECAL (Jlab-PTW-5236)

- Installing additional fans (will be installed today)

- Installing insulation on the detector's face (done)

Restoring PS test setup [38]

ECAL commissioning -- Sasha, All

Laveen update[[39]]

Calibrations

-First look on cosmic data -- Zhikun

Analysis/Simulation

Minutes

Attendees: Bill, Phil, Igal, Liping, Sasha, Vlad, Zhikun, Jane, Olga, Laveen, Jane, Zisis

HV Distribution Boards:
- installed 2 HV distribution boards on the north side
- cables arranged and connected; issues resolved (by Sammy):
  - two connectors with broken lock clips
  - two connectors with small holes
  - multi-pin connectors being pressed by long screws
  - one faulty HV channel on the bottom north PCB—reconnected to a spare channel
Detector power-up and testing using the LMS:
- entire detector powered up
- fixed minor issues, such as loose PMT socket connections
- confirmed all ECAL channels are operational
- need to restore HV cable mapping in CSS after final board installation
Temperature sensors
- two sensors on the top corners of the detector are operational (critical temperature region)
- some issues with two other sensors, one positioned around the beam pipe, the other one on the bottom north corner (need to uninstall and fix)
- two sensors will be included into the HV interlock (consider to include the fan into the interlock as well)
- will be ready to collect cosmic ray data after that
Chris is finalizing the LMS light source design (to be ordered by end of 2024)
Bobby 3D printed parts for reference PMTs
ECAL calibration discussions to begin in the next JEF meeting.