Difference between revisions of "Run Planning Meeting Notes, Mar 21 - Mar 27, 2019"
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#* Accelerator switched to manual current adjustment overnight, attenuator problems ([https://logbooks.jlab.org/entry/3672307 logbook entry 3672307]) | #* Accelerator switched to manual current adjustment overnight, attenuator problems ([https://logbooks.jlab.org/entry/3672307 logbook entry 3672307]) | ||
#* Ongoing DAQ issues ([https://logbooks.jlab.org/entry/3672178 logbook entry 3672178]) | #* Ongoing DAQ issues ([https://logbooks.jlab.org/entry/3672178 logbook entry 3672178]) | ||
| − | #* Advice to shift crew | + | #* Advice to shift crew |
| + | #*# shift summaries are great for overview of what happened during a shift | ||
| + | #*# this summary is NOT a replacement for separate logbook entries related to exceptional conditions or events | ||
| + | #*# PLEASE make separate logbook entries to report ANY SIGNIFICANT ISSUES that come up! | ||
# Reports | # Reports | ||
#* solenoid warm-up underway ([https://logbooks.jlab.org/entry/3671978 logbook entry 3671978]) | #* solenoid warm-up underway ([https://logbooks.jlab.org/entry/3671978 logbook entry 3671978]) | ||
Revision as of 08:13, 26 March 2019
Contents
- Run_Coordination_Meetings:Spring2019_Run
- PrimEx daily meeting
- PrimEx-η run plan
- Production runs, number of triggers
- Trigger counter
- To join via a Web Browser, go to the page https://bluejeans.com/660743227
Thursday, Mar. 21 at 08:45
- Past 24 hours:
- RF recovery during the day shift
- Beam recovery delayed due to (1) issue in the injector, resolved by evening, then (2) UPS battery needs replacement in the north linac.
- Issues
- low counts seen in bcal sector (logbook entry 3670196)
- Reports
- helium target refilled, ready
- trigger rate and beam flux history for Spring 2019 run
- Today:
- Production: 200nA, Al 10-4
- Run Plan
- Production running: when beam returns, check beam conditions as follows:
- do harp scans, both accelerator and Hall D radiator
- check radiation monitor rates in tagger hall and Hall D
- verify transmission in PSC and PS coincidence rates @ 200nA, 1e-4 radiator
- Beam studies planned for day shift on Monday
- RF Recovery scheduled for Tuesday
- Production running: when beam returns, check beam conditions as follows:
Friday, Mar. 22 at 08:45
- Past 24 hours:
- beam recovery, conditions checked, running resumed.
- Issues
- HV tripped on two inner FCal blocks (logbook entry 3670196)
- HV in CDC tripped, without alarm! (logbook entry 3670885)
- Reports
- collimator transmission drops again (logbook entry 3670862)
- Today:
- Production: 200nA, Al 10-4
- Run Plan
- Production running continues
- Beam studies planned for day shift on Monday
- RF Recovery scheduled for Tuesday
Monday, Mar. 25 at 08:45
- Past 72 hours:
- production running on He target until Sunday 5:30pm
- continued running on empty target through Monday 8:30am
- now in controlled access, RF recovery underway
- Issues
- Ongoing issue with CDC HV readback (logbook entry 3670885, 3671598, 3671943)
- PS scalers communication issue (logbook entry 3670950)
- DAQ interruptions ~1 per shift, recovery is straight-forward ([1], [2])
- Compcal monitoring plots, timing shows double peak, considered ok (logbook entry 3671757)
- Compcal HV communication failure (logbook entry 3671849 around 1:00am)
- FCal HV communication failure (logbook entry 3671351)
- Individual FCal bases need reset (logbook entry 3671386, resolved here)
- FCal fadc scalers stop updating (logbook entry 3671880)
- Accelerator tightens AC lock constraints (logbook entry 3671930)
- Reports
- Several reference plots for monitoring histograms out of date (logbook entry 3671340)
- Active collimator lock is mostly working, sometimes fights to keep up (logbook entry 3671214)
- Accelerator using machine development time to investigate this effect in Hall D
- Today:
- work on solenoid during 9:00am - 12:00pm, warm-up to begin (logbook entry 3670889)
- accelerator plans to work on Hall D line optics during second half of day shift
- Run Plan
- Production running continues
- Beam studies planned for day shift on Monday
- RF Recovery scheduled for Tuesday
Tuesday, Mar. 26 at 08:45
- Past 24 hours:
- access day shift on Monday, out at 3:00pm
- beam restored by
- empty-target running continues
- Issues
- Ongoing problems with dropped communication to CDC HV crate (logbook entry 3671943, crate rebooted)
- Reboot of CompCal HV crate failed to restore comms, crate is replaced (logbook entry 3671980)
- Accelerator switched to manual current adjustment overnight, attenuator problems (logbook entry 3672307)
- Ongoing DAQ issues (logbook entry 3672178)
- Advice to shift crew
- shift summaries are great for overview of what happened during a shift
- this summary is NOT a replacement for separate logbook entries related to exceptional conditions or events
- PLEASE make separate logbook entries to report ANY SIGNIFICANT ISSUES that come up!
- Reports
- solenoid warm-up underway (logbook entry 3671978)
- Updated normalized trigger rates history (logbook entry 3672059)
- Near-line FCAL gains calibration (logbook entry 3672065)
- Tagger accidentals fraction (logbook entry 3672169)
- Today:
- machine rf recovery during day shift
- accelerator
- Run Plan
- Production running continues
- Beam studies planned for day shift on Monday
- RF Recovery scheduled for Tuesday
