Wednesday, April 22: SWING Shift

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• General considerations
  • Kijun Park is the current Run Coordinator. Please contact directly via RC phone 757-876-1787
  • Follow the generic Instructions for shift takers
  • Shift leaders: Please make sure to fill out the beam time accounting form and write a "Shift Summary" log entry at the end of your shift regardless if there is beam or not.
  • In general, Hall technical staff should not be contacted by the shift crew - please call the RC first.
  • The target operator is required to supervise the cryo-target.
  • Make sure to use the DVCS CODA configuration for all runs (even when taking single arm HRS data).

• Instructions for this shift
  • 0) Check the beam position
    • - request beam position: BPM A=(+1.5:0.75), BPM D=(+1.5:-0.75) ---- please double check
  • 1) When beam arrives to the Hall
    • - Ask MCC to run the Harps: 1H04A/B (close to target)
    • - halog the results
  • 2) Confirm the beam position using the carbon hole target.
    • - request CW 5uA without raster
    • - check the scaler rate rastered target up to 2x2 or 3x3
    • take LHRS & RHRS run with prescale PS1=1
  • 3) Do SpotL and SpotR
    • - to check the hole is centered on the raster current X vs. Y plot
  • 4) Bullseye scan
    • - once beam is centered
    • - scan with both LHRS & RHRS
    • - PS1=1, PS8=10 : for RHRS
    • - 103kHz = 4096, S0&S2m =1 : for LHRS

Optics Calibration Data

• • Note: Keep an eye on the white board in CC more detail

• • • Beamline commissioning how-to.