RC Meeting and Run Plan, Wednesday, January 7th 2020

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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

Target Readiness

  • Raytum people finished laser fiber repairs. (EPR fiber bundle?)

Remaining work:

  • 1 BNC cables need to be made and attached to these coils.

Current Run Plan

  • Currently measuring laser polarization with new polarimeter
  • Friday (?): Optimistically, Close up the enclosure. Start taking 1-pass data for two days with the same settings as in December.

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[1]
  • Temporary Laser instructions can be found here [2]

Current Issues

  • Polarimetry debugging in progress
  • (ARUN) Transverse didn't indicate a higher polarization. Need to understand why?

Ongoing Work in the Hall

  • DC Power (Mark Todd) needs an escorted access tomorrow at 9am (~1 hour)

Planned Accelerator Configuration Changes

Special Requests

  • Keep target expert schedule filled out on whiteboard