Difference between revisions of "October 25, 2022"
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* watch beam stability | * watch beam stability | ||
* need more shift workers (always) | * need more shift workers (always) | ||
| + | * SHMS rates high (~3k w/o PS), 6M events per run? | ||
= To do = | = To do = | ||
| Line 52: | Line 53: | ||
* calibrate SHMS Dipole LN2 valve during next access https://logbooks.jlab.org/entry/4064490. For now, monitor the ice accumulation if any https://logbooks.jlab.org/entry/4064528 | * calibrate SHMS Dipole LN2 valve during next access https://logbooks.jlab.org/entry/4064490. For now, monitor the ice accumulation if any https://logbooks.jlab.org/entry/4064528 | ||
* reboot or replace the SHMS angle camera https://logbooks.jlab.org/entry/4067528 | * reboot or replace the SHMS angle camera https://logbooks.jlab.org/entry/4067528 | ||
| + | * replace GEM gas bottle | ||
| + | * UNSER calibration | ||
Latest revision as of 09:53, 25 October 2022
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
- SHMS: 8 degrees, -9.2 GeV, 1x, 2x 1-7 off
- HMS: 20 degrees, -4.27 GeV (setting 5)
- 5pass beam, 30 to 60uA
Run Plan
- Continue data taking.
- MCC is planning (not scheduled) a beam current ramp rate test, up to 5uA/s for Hall C. Target expert (Silviu) said all targets are fine.
- Hall A pass change next week ( Monday the 31st ?)
- Short RF recovery on Thursday
Issues
- SHMS DC1 HV tripped. Shift worker was able to bring it up after a few trials. https://logbooks.jlab.org/entry/4068409 This trip seems to correlate with the high rate at SHMS. For future reference, we should run LH2 with <=50uA and LD2 <=30uA as long as SHMS is at 8 degree. https://logbooks.jlab.org/entry/4068405
- The HMS Dipole NMR readback fluctuated since this morning https://logbooks.jlab.org/entry/4068509
- HMS CODA crash (ROC3) https://logbooks.jlab.org/entry/4068495
Notes
- watch beam stability
- need more shift workers (always)
- SHMS rates high (~3k w/o PS), 6M events per run?
To do
- Install Q1 SHMS vacuum gauge (~3hr)
- calibrate SHMS Dipole LN2 valve during next access https://logbooks.jlab.org/entry/4064490. For now, monitor the ice accumulation if any https://logbooks.jlab.org/entry/4064528
- reboot or replace the SHMS angle camera https://logbooks.jlab.org/entry/4067528
- replace GEM gas bottle
- UNSER calibration
