JEF meeting, December 20, 2024

Connection =

Meeting time and location:

• 9:30 am EST (JLab time) remote only
• Connection information

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

• Implementing ECAL into the GlueX DAQ [3]

- 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

• Repairing a few ECAL LMS optical fibers [34][35]
• Preparing for the installation of the insulation on the detector face

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

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

• Preparing for the run -- Sasha

Page for shift Takers

ECAL in the Experimental Safety Assessment Document (ESAD)

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

• FCAL2 Engineering Meetings
• Remaining installation tasks

- 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

-Adjusting HVs

Analysis/Simulation

Minutes

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

• 2 HV distribution boards installed on the north side
  • Arranged and connected all cables
  • Fixed several issues on the top north
    • 2 connectors have broken lock clip, 2 connectors have small hole
    • long screws were pushing on the multi-pin connectors attached to the CAEN modules (Sammy came to the hall and resolved the problems)
  • Problem with one HV channel on the bottom north; unable to hold high voltage above 1 kV. The problem was on one of PCBs. Reconnected cable to the spare channel (too much work to uninstall the board)
  • Powered up the entire detector and checked with the LMS
    • minor issues with some modules, loose connection of the PMT socket (fixed)
    • all ECAL channels are operational
    • need to restore the HV cable mapping in the CSS after installing the final distribution boards
• Temperature sensors arrived and have been installed

• LV problem for North top fixed (was drawing 4 Amps)
  • Consider lower trip setting for LV?
• 3D printing for reference PMT (for LMS) setup sarted
• Chris S. working on final layout for LMS light source (with 25 LEDs), to order the week of 9/16/24, receive next year?
• Temperature sensors arrived and have been installed
• 2 new fans have been installed
  • Need to be put into interlock