Connection

Meeting time and location:

Agenda

Preparation of parts for ECAL -- Sasha

- PCBs with 5 (12 x 4) and 5 (6 x 8) connectors are ready for two distribution boards. One more board will be ready during next week.

- Boxes for HV boards have been ordered. The lead time about 3 weeks.

- Communicated with Vince P. (JLab's machine shop) and Tim. Ordered 2 temporary distribution boards, if the delivery of the real ones is delayed

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

- Fine-tune the light source. Slightly modified the design, ordered new LEDs

- rocecal3 crate was fixed [5] (initial DAQ implementation [6])

- implementing flash ADC scalers [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]

- Installation of scintillating paddles for cosmic tests [11]

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

- Connecting cooling pipes to the ECAL fan (done by tech group)

- Installing dark room ceiling and insulation inside the room, required for cooling test (almost complete)

- Test cooling system (in progress, almost complete)

- Installing HV distribution boards, start switching the detector ON (waiting for HV boxes)

Restoring PS test setup [16]

ECAL commissioning -- Sasha, All

Attendees: Bill, Igal, Sasha, Vlad, Zhikun, Liping, Ilya, S.T.

HV distribution boards in house, being populated with connectors, but box to house them has still not been delivered
- Box has been ordered and PR signed, expect delivery in ~3 weeks
- In the meantime planning for temporary box
LV distribution boards lowered, need to re-cable
LMS
- Tuning of light source underway
  - Use more LEDs and/or increase power
  - Modify to use narrower aperature LEDs -- Vlad Popov
- Some fibers need repair
- Reference PMT: may need additional magnetic shielding, alpha source needs to be coordinated with RadCon
Integration of ECAL into DAQ
- ECAL LMS trigger now working
- GTP trigger with small number of channels implemented
- Working on VTP-based trigger, needs firmware update
- Recorded waveform for one PMT --> translation table and low-level reconstruction library working!
Translation table for lead glass region implemented
Dark room almost complete
- Checked interlock system, humidity/temperature sensors not included yet
- Dehumidier(s) will be installed
ECAL commissioning plan being fleshed out
- Expect will need ~1 month
- Start with 2V setting on flash-ADCs, but may need to go down to 1V, need data to decide
- Need to minimize gain variation to ~5% level for trigger
ECAL has been added to ESAD