RC Meeting and Run Plan, Tuesday December 18th 2019

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RC Meeting Information

RC Daily Meetings are at 4:15 PM, 2nd floor Counting House Meeting Room

  • Bluejeans remote connection information:
 To join the Meeting:
 To join via Room System:
 Video Conferencing System: bjn.vc -or-
 Meeting ID : 861439920
 To join via phone :
 1)  Dial:
   +1.408.740.7256 (US (San Jose))
   +1.888.240.2560 (US Toll Free))
   +1.408.317.9253 (US (Primary, San Jose))
   (see all numbers - http://bluejeans.com/numbers)
 2)  Enter Conference ID : 861439920

Useful Links

Current Status

Target related work:

  • Spectral analysis of all lasers - no issues
  • Elastics data taken on reference cell with N2
  • Polarimetry
    • NMR -- STATUS?
    • EPR -- STATUS?
    • pNMR -- STATUS?


  • Data taken with certain HMS paddles (1 - 9) and SHMS (1 - 7) turned off. Have to make sure that we have the correct settings before taking data (right type of target, reference cell gas, magnetic fields, kinematics settings etc.).


  • Raster size specified = required now i.e. 5mm = 5mm

Current Run Plan

Wednesday--> Swing + Night shifts:

  • Empty cell run
  • He3 pressure curves runs
  • Energy measurement
  • BCM calibration
  • Elastics on He3 cell
  • Back to He3 transverse measurements (start if we have time)

Thursday -->Day shift (+ Swing?):

  • Spectrometer rotation tomorrow morning
  • MOLLER measurement
  • Optics delta scan
  • Back to He3 transverse measurements (if not finished tonight)

  • Day by Day Options [1]

Notices in Effect for Shift Crew

  • Policy for CANS-related hall status change: Make a logbook entry when the hall goes in, or comes out of laser-controlled access.
  • Magnet policies
    • HMS Q1 must be ramped down in 50A steps in all cases
    • Do not ramp HMS Q2 to zero, only go to 10A and then switch off power.
  • Inform the RC of any access that the Target Team requires. The RC will coordinate with RadCon to make everything run smoothly.
  • The operators have been somewhat careful with our beam orbit locks. Please make sure that the orbit locks are enabled and the beam does not drift from its nominal position.
  • Ramp rate lock instructions are here and added to checklist[2]
  • Temporary Laser instructions can be found here [3]

Current Issues

  • Polarimetry debugging

Ongoing Work in the Hall

Planned Accelerator Configuration Changes

Special Requests

  • Keep target expert schedule filled out on whiteboard