Difference between revisions of "December 16, 2022"
From HallCWiki
| Line 35: | Line 35: | ||
* Today (12/16) | * Today (12/16) | ||
** Currently in the second cycle of Setting 1 of HMS high x at 35 degrees. | ** Currently in the second cycle of Setting 1 of HMS high x at 35 degrees. | ||
| − | ** BCM calibration | + | ** BCM calibration after this meeting if the unser offset is still behaving. |
* Yesterday (12/15) | * Yesterday (12/15) | ||
** BCM calibrations did not work, as the unser was saturated due to a large offset. | ** BCM calibrations did not work, as the unser was saturated due to a large offset. | ||
*** Dave Mack came in and [https://logbooks.jlab.org/entry/4102233 power cycled it]. | *** Dave Mack came in and [https://logbooks.jlab.org/entry/4102233 power cycled it]. | ||
| − | *** [https://logbooks.jlab.org/entry/4102427 But it is misbehaving again this morning. Dave | + | *** [https://logbooks.jlab.org/entry/4102427 But it is misbehaving again this morning]. Dave G cycled it and it should be okay now. |
*** Could the radiation from the Beam Energy Measurement mishap killed the unser UPS in the hall? | *** Could the radiation from the Beam Energy Measurement mishap killed the unser UPS in the hall? | ||
** [https://logbooks.jlab.org/entry/4102214 PSS Failure: Hall C suddenly dropped to Restricted Access around 4pm]. | ** [https://logbooks.jlab.org/entry/4102214 PSS Failure: Hall C suddenly dropped to Restricted Access around 4pm]. | ||
| Line 48: | Line 48: | ||
= Current Run Plan = | = Current Run Plan = | ||
| − | * BCM Calibration | + | * BCM Calibration after this RC meeting |
* Continue with run plan printed sheet. High x HMS at 35 degrees. | * Continue with run plan printed sheet. High x HMS at 35 degrees. | ||
| Line 57: | Line 57: | ||
= Current Issues = | = Current Issues = | ||
* HMS Dipole NMR lock struggling to hold. Should be fine, as when it does lock for a few minutes at a time, it is reading back the correct field. Although it might make chaining to the next HMS momentum difficult. | * HMS Dipole NMR lock struggling to hold. Should be fine, as when it does lock for a few minutes at a time, it is reading back the correct field. Although it might make chaining to the next HMS momentum difficult. | ||
| − | * Unser offset still | + | * Unser offset issues may still be persisting. Dave Mack has been emailed about it. |
= Planned Accesses to the Hall = | = Planned Accesses to the Hall = | ||
Revision as of 11:03, 16 December 2022
Contents
RC Meeting Information
RC Daily Meetings are at 11:00 (am) via Zoom and in person in the counting house meeting room (2nd floor)
- Zoom remote connection information:
Join ZoomGov Meeting https://jlab-org.zoomgov.com/j/1607100885?pwd=ZFBsRTFsYm5Zb0laZ0tyZXNjcEE0QT09 Meeting ID: 160 710 0885 Passcode: 595071 One tap mobile +16692545252,,1607100885# US (San Jose) +16468287666,,1607100885# US (New York) Dial by your location +1 669 254 5252 US (San Jose) +1 646 828 7666 US (New York) +1 669 216 1590 US (San Jose) +1 551 285 1373 US 833 568 8864 US Toll-free Meeting ID: 160 710 0885 Find your local number: https://jlab-org.zoomgov.com/u/ab2CekLXgQ
Useful Links
Current Status
- Shift Summaries
- Today (12/16)
- Currently in the second cycle of Setting 1 of HMS high x at 35 degrees.
- BCM calibration after this meeting if the unser offset is still behaving.
- Yesterday (12/15)
- BCM calibrations did not work, as the unser was saturated due to a large offset.
- Dave Mack came in and power cycled it.
- But it is misbehaving again this morning. Dave G cycled it and it should be okay now.
- Could the radiation from the Beam Energy Measurement mishap killed the unser UPS in the hall?
- PSS Failure: Hall C suddenly dropped to Restricted Access around 4pm.
- Hall Swept and Run-Save Boxes armed. Back to Beam permit around 5:30 PM.
- Unable to send stable 40uA beam until about 7:30 pm due to thunderstorms.
- Smooth data collection afterwards and through the night, although HMS CODA needed to be restarted once.
- BCM calibrations did not work, as the unser was saturated due to a large offset.
Current Run Plan
- BCM Calibration after this RC meeting
- Continue with run plan printed sheet. High x HMS at 35 degrees.
Notices in Effect for Shift Crew
- Continue to fill out SHMS excel sheet for good electrons .
- Keep SHMS prescaled rate below 8kHz.
Current Issues
- HMS Dipole NMR lock struggling to hold. Should be fine, as when it does lock for a few minutes at a time, it is reading back the correct field. Although it might make chaining to the next HMS momentum difficult.
- Unser offset issues may still be persisting. Dave Mack has been emailed about it.
Planned Accesses to the Hall
- May need to replace unser UPS in the hall. Waiting to hear back from Dave Mack on what he thinks.
