RC Meeting Information

RC Daily Meetings are at 3:15pm, remote connection link: https://bluejeans.com/256205934

Accelerator and Hall Status

Overall not much new, we are in stable production phase at present.

Beam in Hall A is stable, we've been taking production runs with stable beam with few interruptions.
We did a ion chamber calibration in last swing shift, with SBS-ON, thin carbon target. This improved beam tripping situation.
Cycling through 2h LH2, 8h LD2 and 0.5 hour dummy target runs
Beam line optics will be kept as is.
A 2~3 hour long 10 uA and 12 uA on LD2 target run is planned in Tuesday Swing shift, this run includes the steps of gradually increasing beam current, see if GEM can tolerate it. RC will call GEM experts when this run happens

Controlled access list for tomorrow

Bob and David are working on a script to read scaler information, and calculate beam charge for each run, 90% finished
Eric is working on a simulation putting an absorber at the exit of the target chamber

HCAL:Need to fix the raspberry pi controllers for HVs, and plug them into a controllable power supply; Updating Panguin plots
BBCal: Need to fix the trigger DAC GUI during controlled access
Timing hodoscope: None
Grinch: None
GEMS: A discussion on the risk of operating GEMs under 12 uA on LD2 target, we are doing it in today's swing shift, experts have been notified
Beamline: Code for accurate beam charge calculation is close to finish, 90%. looking for data to test.
DAQ: DAQ get stuck from time to time, probably due to MPD needs resetting regularly. Working on an alarm for DAQ when DAQ hungs
Replay analysis: Found an APV whose pedestal drifted from 400ADC to 900 ADC, probably need physical access to check if there's any hardware issue.

Follow the SBS-11 run plan listed on the wiki: https://sbs.jlab.org/wiki/index.php/Main_Page