July 29, 2020 online meeting minutes

present: Sergey, vpk, rafo, Raffaella, nathan, Stepan, pasyuk, cuevas

1. Trigger upgrade progress: drift chamber - Rafo descried the progress. He was not able to find good solution to fit circles on the tilted segments, and he suggested to rotate segment into vertical position, where fit can be done with simpler formula (see [here]) and angle have to be scanned to find the best fit. Rafo will implement that idea into event display program and results will e reviewed and discussed.

2. DAQ high event rate test: 60kHz random pulser tests were conducted with different subsets of crates; FADCs are working fine; DCRB after firmware upgrade to version 1.5 are working fine as well; some crates with CAEN TDCs (tdcftof's) shows problems in TI readout but it looks like induced by CAEN TDCs and depends on trigger rule 1 settings, study will be continued; VTP readout will be checked as well

3. Preparation for upcoming run: cosmic data being taken occasionally using PROD66 configuration to check various detectors, so far everything works; Sergey is updating daq expert documentation and will work with Rafo to introduce him to daq operations; htcc (and any other calibration runs) have to be coordinated with Mohammad

Other issues discussed:

• Eugene Pasyuk will run 2 cables from Moller to BAND crate to use 2 FADC channels in standalone Moller setup, in a future we may consider designated crate
• Sergey will double check daq settings in upcoming run trigger files
• Chris will work out VXS backplane order