JEF meeting, December 6, 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]
• Commissioning of the south bottom region [22]
• First cosmic event in the ECAL [23]
• Temperature scan in the ECAL divider region [24][25][26][27]

Meeting with Tim, additional fans will be installed

• Repairing a few ECAL LMS optical fibers [28][29]
• Preparing for the installation of the insulation on the detector face

- Removing Tedlar from the face of the detector [30]

- ECAL flash ADC scalers before removing detector face cover [31]

• 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 [32]

ECAL commissioning -- Sasha, All

Laveen update[[33]]

Calibrations

-First look on cosmic data -- Zhikun

-Adjusting HVs

Analysis/Simulation

Minutes

Attendees: Xiaolin, Sasha, Vlad, Zhikun, Bill, Igal, Axel, Olga, Jane, S.T.

• 4 HV distribution boards finally arrived
  • 2 installed in hall on south side, now being cabled up
  • Installed 399 cables -> dividers, 2nd distribution box not connected yet
    • Ran scalers to check signals, found 5 swapped ables and a few other problem channels, all fixed --> scalers look ok
• Chris S. finalizing design for LMS light source, now with 25 LEDs, will order week of Dec 9.
• 4 temperature sensors arrived to be mounted on ECAL dividers
• 2 fans arrived, techs will install
• Used cosmic data to find peak positions and adjust HV (Zhikun)
  • Set amplitude goal to 9 ADC counts above base line
  • Plan to use LMS to do voltage scan, verify amplitude-hv relationship
  • May need to lower voltage to have high energy photons be in fADC range
• Trigger development: waiting for firmware update