Monday, Apr. 4: DAY Shift
Go back to Daily Run Plan Daily Run Plans
- DVCS calorimeter calibration runs - 2 pass
LH2 target, unrastered beam (which means beam current 5 uA - not more than 5 !!!).
LHRS in positive polarity.
Open LHRS collimator
DAQ: DVCS config
angle LHRS= 38.04 deg
momentum LHRS= 2.127 GeV
beam energy= 4.5 GeV
We will take about 1 hour beam with three calorimeter angles: 26.5, 25 and 23.5 deg.
When in need of asking MCC for a harp scan don't forget to mention that the raster should be OFF.
Before starting checking the beam (the profile with harp scans, its centering with the raster target or the C hole target, etc.) don't forget to turn OFF the DVCS calo HV, and also the HV on the VDCs. When ready for production don't forget to turn them back on.
- After a period of 3 hours or more without beam (like beam study, pass change,...) ask MCC to run 5uA 2 by 2 rastered beam on the carbon hole target and make sure you can see the hole (use Spot++ to analyze the C hole run)