Difference between revisions of "RC Meeting, Wednesday, October 27 , 2021"
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# Replace flow switches for (HMS?) magnet power supplies: next opportunistic access (Joe Beaufait) (<span style="color:red"> '''PENDING''' </span>) | # Replace flow switches for (HMS?) magnet power supplies: next opportunistic access (Joe Beaufait) (<span style="color:red"> '''PENDING''' </span>) | ||
# Q3 insulating vacuum spikes generating annoyance alarms that take minutes to recover. https://logbooks.jlab.org/entry/3930175 Noise levels on transducers look OK, but Junaid's plot indicates Q3 is burping: https://logbooks.jlab.org/entry/3932992 . | # Q3 insulating vacuum spikes generating annoyance alarms that take minutes to recover. https://logbooks.jlab.org/entry/3930175 Noise levels on transducers look OK, but Junaid's plot indicates Q3 is burping: https://logbooks.jlab.org/entry/3932992 . | ||
| − | # | + | # Serious HB LHe low liquid level alarms. https://logbooks.jlab.org/entry/3933051 Always seems to start with a subtle, simultaneous increase in level in Q1/2/3. https://logbooks.jlab.org/entry/3929152 . |
# Target ladder camera was identified to be bad: Joe Beaufait will order camera (<span style="color:red"> '''PENDING''' </span>) | # Target ladder camera was identified to be bad: Joe Beaufait will order camera (<span style="color:red"> '''PENDING''' </span>) | ||
# Still running with no UPS on the SHMS cryo controls - Steve L. has ordered batteries and UPS. (<span style="color:red"> '''PENDING''' </span>) | # Still running with no UPS on the SHMS cryo controls - Steve L. has ordered batteries and UPS. (<span style="color:red"> '''PENDING''' </span>) | ||
Revision as of 09:01, 27 October 2021
RC Meeting Information
RC Daily Meetings are at 10 am, remote connection link: https://bluejeans.com/861439920
Accelerator Status
- Beam delivery back to Halls B,C,D on owl shift.
Hall C Status
- Back in production at 42 muA on late swing. (Some beam early on swing, but mostly tuning for Hall B.)
- On late swing, alarms due to dropping HB LHe levels. We have our good days, but they always come back. Steve L intervened. https://logbooks.jlab.org/entry/3933018 https://logbooks.jlab.org/entry/3933051 He's set it so the HB is now over-filling a bit.
- End of swing, SHMS Q2 Interlock plus some sort of communication reset required on a screen I haven't seen before. https://logbooks.jlab.org/entry/3933073 Also Steve L. Recovery by 00:30 on owl. (NOTE TO SELF: ARE THEIR INSTRUCTIONS FOR THIS ON THE WIKI? IT TOOK ME 5 MINUTES TO FIND THAT ITTY BITTY HEART ON THE SCREEN.)
- Number of good pions is ????.
Current Run Plan
- Day shift only: Try to take 1 hour of Dummy target each day. (a 100% live hour)
- Tentatively scheduled: a BCM calibration on Wednesday mid-afternoon.
- Continue data taking until early Nov
Current Issues
- Replace flow switches for (HMS?) magnet power supplies: next opportunistic access (Joe Beaufait) ( PENDING )
- Q3 insulating vacuum spikes generating annoyance alarms that take minutes to recover. https://logbooks.jlab.org/entry/3930175 Noise levels on transducers look OK, but Junaid's plot indicates Q3 is burping: https://logbooks.jlab.org/entry/3932992 .
- Serious HB LHe low liquid level alarms. https://logbooks.jlab.org/entry/3933051 Always seems to start with a subtle, simultaneous increase in level in Q1/2/3. https://logbooks.jlab.org/entry/3929152 .
- Target ladder camera was identified to be bad: Joe Beaufait will order camera ( PENDING )
- Still running with no UPS on the SHMS cryo controls - Steve L. has ordered batteries and UPS. ( PENDING )
- HCCAM02 not functioning (lift required to replace).
