JEF meeting, November 22, 2024

Connection

Meeting time and location:

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

Agenda

Preparation of parts for ECAL -- Sasha

-Expected delivery date of the ECAL HV distribution boards 11/18/2024 [1][2]

-Meeting with Fernando and Chris regarding updating the LMS light source, a few new LEDs have been ordered

-Four temperature sensors (RTD) were ordered. They will be installed in the ECAL divider region

-Tim ordered two additional fans to increase the air flow in the divider region

-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]
• First cosmic event in the ECAL [22]
• Temperature scan in the ECAL divider region [23][24][25][26]

Meeting with Tim, additional fans will be installed

• Repairing a few ECAL LMS optical fibers [27][28]
• Preparing for the installation of the insulation on the detector face

- Removing Tedlar from the face of the detector [29]

- ECAL flash ADC scalers before removing detector face cover [30]

• Preparing for the run

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

- Installing insulation on the detector's face

Restoring PS test setup [31]

ECAL commissioning -- Sasha, All

Laveen update[[32]]

Calibrations

-First look on cosmic data -- Zhikun

Analysis/Simulation

Minutes

Attendees: Sasha, Zhikun, Phil, Bill, Vlad, Jane, Olga, Laveen, Liping, Xiaolin, S.T.

• Final inspection of optical fibers completed, techs put new Tedlar on FCAL face and will install new insulation foam
• Everything looks good on the ECAL north side according to scalers
• Still waiting for HV boxes
• Tests continue to increase LMS light output
  • Fernando found brighter LEDs, will test
  • Driver modified, added many more LEDS to board (5 -> 25)
  • Will still use integrating sphere
• Four more temperature sensors for ECAL divider region ordered
• Two more fans ordered, to be place to left and right of existing assembly
• Laveen working on reference PMT design
• One LV channel needs to be fixed
• Documentation coming together: ECAL shift page for upcoming run, ECAL in ESAD, ePAS for general maintenance
• Zhikun developed script to create new HV config file based on Amp<->HV curve
  • Will use fitted peak positions from cosmic data
• CSS for HV control ready to be tested
• Calibration plans to be discussed next meeting
  • Cosmics for initial HV settings
  • Compton events
  • π0 refinement