RC Meeting, Wednesday, September 29 , 2021
From HallCWiki
Contents
RC Meeting Information
RC Daily Meetings are at 10 am, remote
- 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
Tuesday Status
- The refurbished breaker was installed around 4 pm yesterday, and the beam came back to the hall around 7:30 pm.
- We took around 11 hours of beam from Tuesday 7:30 pm to 6:30 am this morning we further increased the pion count to 4155.
- Maintenance item performed on Tuesday:
- Walter and techs performed N2 pumping on the HMS transfer line.
- Dave switched the leads on the fan, no change on the coolant flow was observed: https://logbooks.jlab.org/entry/3914000
- Based on our request, the raster magnets were restored to the original four coil operation. Now we ask 2x2 raster to get a 2x2 raster: https://logbooks.jlab.org/entry/3913853
- Tune mode generator fixed! (Maybe forever).
- Greg target trained half a dozen people.
Current Run Plan
- Accelerator status
- Accelerator maintenance ends at 4 pm. Beam back into the Hall at 6pm.
- Once the beam is here, resuming Q2=6 GeV left setting
- FACDMODE10 data taken
- Dummy target run daily.
- 3300 pions (32% of the statistics with 52% of the charge)
- MCC whiteboard
- Rotation on Friday?
Current Issues
- Target ladder camera was identified to be bad: Joe will purchase a replacement in the next funding cycle
- Why did target draw so much coolant
- Contact Chris Perry (Cryo engineer)
- HCDESK1 computer still dead
- Contact Ellen if there is an opportunity to access the hall (longer than 4 hours). This is for diagnosing the SHMS power supply.
Special Requests
None
