RC Update and Run Plan for Aug 5, 2020
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Contents
RC Meeting Information
RC Daily Meetings are at 4:15 PM, 2nd floor Counting House Meeting Room
Wednesday Aug 5 2020.
- Hall C in beam permit waiting to re-establish beam.
- MCC is recovering the machine.
General updates
- Finishing 1-pass beam to Hall B and will establish 30 uA (planned) to Hall C.
- Pass change for B before bringing A online. Priority will be beam at desired current to C.
Pending problem
- Need beam. Want beam to 42 uA for BCM calibration.
Recent polarization measurements
- ~34%
Current Run Plan
Normal Production running
- Prerequisites
- Make sure operational restrictions are followed.
- Make sure the raster size is correct (4-4.5)
- Monitor beam parameters/configuration very often and post an entry like this at the beginning of your shift and when run conditions have changed
- Running on cell targets: raster always ON (4-4.5, size will be determined by the scraping checks), orbit locks ON, current ramp rate 1 muA/sec
- Always take 120Hz of EDTM
- Fill the BTA with realistic numbers. If the desired beam current is not delivered prorate your ABUs!
- Change the IHWP every 4 hours when running on glass cells
- Run plan
- Re-establish beam [1].
- When first able to send CW beam to dump, target in no target position, 2min. on 1uA, 1.5uA, 2uA. Simona here for Solid Cer data.
- If MCC can deliver up to 42 muA we will do a BCM calibration [2]
- Production on 3He; if not able to reach 30 uA, pro-rate the ABUs
Notes for tomorrow's 7:45 meeting
- ?
Future
- After ~ 10 days of running Hall C will go to 1 pass for ~3 days
Hall Access
- None planned right now
When there is a down:
- If the down is 2+ hours call Simona: she will check with the RC to see if there is an opportunity for work in the Hall (SoLID Cherenkov parasitic test)
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
- Spectrometer GUI (
go_magnets
) should always be visible on Shift Leader computer, hcdesk3 - 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.
- If any of the Spectrometers magnets trip, take a screenshot of the PSU window and check the hall for smoke or water with the camera before resetting the interlock and post it to hclog.
- Spectrometer GUI (
- Inform the RC of any access that the Target Team requires. The RC will coordinate with RadCon to make everything run smoothly.
- 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[3]
Planned Accelerator Configuration Changes
- 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