Difference between revisions of "RC Meeting, Wednesday, October 14 , 2021"
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= RC Meeting Information = | = RC Meeting Information = | ||
| − | <b> RC Daily Meetings are at 10 am, remote </b> https://bluejeans.com/861439920 | + | <b> RC Daily Meetings are at 10 am, remote connection link: </b> https://bluejeans.com/861439920 |
= Accelerator Status = | = Accelerator Status = | ||
# Very efficient beam delivery over the last 24 hours | # Very efficient beam delivery over the last 24 hours | ||
| − | # Hall A pass change shown as taking place on Monday on the white board --> this may change depending on commissioning progress. | + | # Hall A pass change shown as taking place on Monday on the white board --> this may change depending on commissioning progress. Hall A will know more once SBS comes up. |
# Next week there will be a maintenance day (Wednesday on white board). May be the possibility for access to the hall. | # Next week there will be a maintenance day (Wednesday on white board). May be the possibility for access to the hall. | ||
= Hall C Status = | = Hall C Status = | ||
# Efficient data taking - no significant hall-related downtime | # Efficient data taking - no significant hall-related downtime | ||
| − | # So far we have collected | + | # So far we have collected 1290 pions (as of 7:40 am) in this configuration |
# One large excursion in bender LHe level [https://logbooks.jlab.org/entry/3923841]. These excursions seem to happen every couple days [https://logbooks.jlab.org/entry/3924363] | # One large excursion in bender LHe level [https://logbooks.jlab.org/entry/3923841]. These excursions seem to happen every couple days [https://logbooks.jlab.org/entry/3924363] | ||
| Line 26: | Line 26: | ||
# Target ladder camera was identified to be bad: Joe Beaufait will purchase a replacement in the next funding cycle (<span style="color:red"> '''PENDING''' </span>) | # Target ladder camera was identified to be bad: Joe Beaufait will purchase a replacement in the next funding cycle (<span style="color:red"> '''PENDING''' </span>) | ||
#* Still need to follow-up with Joe about when the purchase can be done. | #* Still need to follow-up with Joe about when the purchase can be done. | ||
| − | # Still running with no UPS on the SHMS cryo controls. | + | # Still running with no UPS on the SHMS cryo controls. (<span style="color:red"> '''PENDING''' </span>) |
= Special Requests = | = Special Requests = | ||
Latest revision as of 09:24, 14 October 2021
RC Meeting Information
RC Daily Meetings are at 10 am, remote connection link: https://bluejeans.com/861439920
Accelerator Status
- Very efficient beam delivery over the last 24 hours
- Hall A pass change shown as taking place on Monday on the white board --> this may change depending on commissioning progress. Hall A will know more once SBS comes up.
- Next week there will be a maintenance day (Wednesday on white board). May be the possibility for access to the hall.
Hall C Status
- Efficient data taking - no significant hall-related downtime
- So far we have collected 1290 pions (as of 7:40 am) in this configuration
- One large excursion in bender LHe level [1]. These excursions seem to happen every couple days [2]
Current Run Plan
- Continue data taking until early Nov
Current Issues
- Replace flow switches for magnets: next opportunistic access (Joe Beaufait) ( PENDING )
- The HB has seen some fluctuations in the LHe levels. At the next opportunistic access Heidi would like to investigate the cryo line. ( PENDING )
- Heidi believes this is related to a vacuum issue and the access is for diagnostic purposes only. Can be escorted during regular office hours (do not call her in at midnight for this)
- If indeed it proves to be the case the only remedy would be to warm up the magnet and pump the region (which would be a multiple day operation)
- So far the PID loops have done their job and Heidi (together with the shift crew) are keeping a close eye on the LHe levels
- Water flow to the dump aperture needs to be replaced: needs 4+h and Steve Suhring believes that it can wait until the SAD ( PENDING )
- Target ladder camera was identified to be bad: Joe Beaufait will purchase a replacement in the next funding cycle ( PENDING )
- Still need to follow-up with Joe about when the purchase can be done.
- Still running with no UPS on the SHMS cryo controls. ( PENDING )
