RC Meeting and Run Plan, Wed, January 22nd 2020
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Contents
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: https://bluejeans.com/861439920 To join via Room System: Video Conferencing System: bjn.vc -or-199.48.152.152 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
General updates
Target training on Thursday 1/23
- Thursday from 2:30PM to 4:00PM in counting house.
- Please send an email to JP (jpchen@jlab.org) or Arun (arunts@jlab.org) to register.
Tuesday day – Wednesday owl
- Laser alignment and wavelength adjustment
- New correction coil settings [1]
- AFP loss per pass: 1.6% in pumping chamber, 0.2% in target chamber [2]
- NMR field sweep program transverse pumping chamber signal works [3]
Wednesday day
- Multiple accelerator problems overnight and today; some beam this morning
- Harp scan around noon
- Moller & spin dance postponed
Current Run Plan
- Take NMR every 5–6 hours
- Always take 120Hz of EDTM
Once beam is back
- Tune beam; want width < 300 um
- Check beam positions [6]
- Moller & spin dance (maybe)
- Take data:
- if (3He polarization > 40%):
- else:
Wednesday swing – Thursday owl
- See above beam comments
- Anything else?
Thursday day
- DOE tour in the morning
- 8:00 AM RadCon sweep
- 9:30 AM restricted access
- 10:30 AM tour, over by lunch presumably
- Afternoon
- Moller and spin dance (pending Hall A's status)
- We can postpone spin dance until next week if needed
- Moller and spin dance (pending Hall A's status)
Special Requests
- Keep target expert schedule filled out on whiteboard
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[7]
- Temporary Laser instructions can be found here [8]