RC Meeting Information

Current RC: Jiwan Poudel

RC Daily Meetings are at 3:30 (pm) via Zoom and in person in the counting house meeting room (2nd floor)

Useful Links

Beam off for pass change in Hall C around 9:20 yesterday then Hall is accessed to fix GEM DAQ and BBCAL-HV
First harp scan during day shift wasn't good https://logbooks.jlab.org/entry/4305263, and MCC took beam away to fix optics
Tune back back to hall in swing shift only. Beam profile and carbon hole scan https://logbooks.jlab.org/entry/4305386 was good, so ready for production around 17:50
HCAL threshold scan with 2uA current on LD2 w/radiator was completed for -15 to -35 mV https://logbooks.jlab.org/entry/4305569
Many SBS GEMs were found off by Holly around 6 am (they seems to be tripped off around 3:40 am and shift crew didn't notice !!!)
Paul changed the current threshold for parity DAQ

Accelerator beam studies currently scheduled on May 19th (starting at 7:00 am) and May 20th (until 7:00 am)

Raster is on.
Target is LD2 with a radiator
BB magnet at 750 A and SBS magnet at 1470 A (70%)
Set ps3=0 (coin trigger), ps5=5 , all others to -1 .
Set BBCal threshold to approximately ~1140 MeV ( -300 mV in BBCALHI DAC) and HCAL threshold (-25 mV)
Beam current ~2.5 uA
2 hr long runs

Frequent DAQ crashing (mostly during the start of run )
SBS magnet readback current fluctuation (set to 1470 A but reaches upto 1500 A sometimes) https://logbooks.jlab.org/entry/4305766, https://logbooks.jlab.org/entry/4305709
Open shift schedule (Saturday Day, Sunday Day and Swing shifts) https://misportal.jlab.org/mis/physics/shiftSchedule/?experimentRunId=GEn-RP_KLL

Moller measurement--when??
Hall Access to remove Analyzer on Sunday (Radcon will survey the hall starting 7:00 am)
GEMs HV/Luminosity scan on Sunday https://docs.google.com/document/d/1rIy6yNIc4nWDFDWbIboZqdVADxWlbNlhXIRjIiuWVaU/edit
Parity DAQ run during beam studies