Difference between revisions of "Run Planning Meeting Notes, August 13 -17, 2020"
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#* Beamline pump failed (8/15, 11am) 2nd time in 3 days, lost about 1 hour beam time. | #* Beamline pump failed (8/15, 11am) 2nd time in 3 days, lost about 1 hour beam time. | ||
#* CHL Trip (8/16, 8am) 6 hours down time. | #* CHL Trip (8/16, 8am) 6 hours down time. | ||
− | #* Two Harp scan results: | + | #* Two Harp scan results: [https://logbooks.jlab.org/entry/3828762 Convergence 8/16], [] |
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# Reports/Issues | # Reports/Issues | ||
#* [https://logbooks.jlab.org/entry/3828898 Changed defaults for harp fitting tool sigmas] (Richard) | #* [https://logbooks.jlab.org/entry/3828898 Changed defaults for harp fitting tool sigmas] (Richard) | ||
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#* TagM cards being debugged | #* TagM cards being debugged | ||
#* TAGH Disc counter not functioning properly | #* TAGH Disc counter not functioning properly | ||
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+ | #* 4 hour maintenance tomorrow, reduce 40 faults a day. Cut trips | ||
== Friday, August 14 == | == Friday, August 14 == |
Revision as of 07:56, 17 August 2020
<- Back to Run Coordination Meetings:Summer2020
Friday, August 14
- Weekend Running
- Since 20:00 Friday, we collected 8.5B triggers (~3.4B/day)
- Beamline pump failed (8/15, 11am) 2nd time in 3 days, lost about 1 hour beam time.
- CHL Trip (8/16, 8am) 6 hours down time.
- Two Harp scan results: Convergence 8/16, []
- Reports/Issues
- Changed defaults for harp fitting tool sigmas (Richard)
- FCAL Scaler missing channels
- Ps/trigger ratio: 8/16/2020
- Pending issues:
- TagM cards being debugged
- TAGH Disc counter not functioning properly
- 4 hour maintenance tomorrow, reduce 40 faults a day. Cut trips
Friday, August 14
- Last 24 hours
- Stable-ish beam through yesterday to this morning, ~1.3 B triggers collected
- Beamline Turbo pump controller failed, Keith came in and fixed the issue. Lost 2 hour beam time [1] [2] Pump failing
- Reports/Issues
- New 45/135 coherent peak edge Perp Para
- 45/135 new spot is close to the diamond edge, we need to pay attention to the rate.
- Need to pay special attention to the coherent peak position
- Amount of adjust (to the coherent peak) is increased (45/135) each time we change orientation
- Amo to 0/90 para requires (Beni)
- Beam drift due to lost beam lock. [3]
- Hodoscope disc [4]
- Missing FCAL channels due to the lost communication FCAL controller last night this morning
- New 45/135 coherent peak edge Perp Para
- Pending issues:
- TagM card issue:
- FCAL remote controller PDU reset. (No reset planned for other three PDUs)
- Run Plan
- No long beam trips, no harp yesterday. Next harp scan?
- Production
- Hall C path change tentatively at August 24th (for three days). Question regarding beam stability and maximum current is raised to Jay, being discussed amount experts. Possible solution: tune beam two a shift to stabilize the lock; Use AD00 BCM as BPM, etc. Jay will get back to me.
- CPP installation:
- CPP's preference: schedule the CPP test after Aug 21.
- Maintenance schedule to be decided.
Thursday, August 13
- Announcement
- Current run period has be extended to September 21.
- Updated shift list
- Last 24 hours
- Unstable beam yesterday swing shift due to Hall C Moller measurement: 4:00-7:00 pm, 350nA tripping off AD00, unstable 240 nA available.
- Stable beam established after 7:30 pm yesterday.
- Diamond (JD-105 45/135) alignment completed by Hovanes during his shift
- TAGH scan completed by Sasha during his shift [5]
- Reports/Issues
- Run Plan
- Next harp scan?
- Production
- Hall C path change tentatively at August 24th (for three days). Impact initial 3 days of running without orbit lock (Hall A is off in the same time), 350nA beam will trip AD00.
- CPP installation:
- CPP's preference: schedule the CPP test after Aug 21.
- Installation to be completed during the next maintenance day. Date undecided, Jay will inform me as soon as he decided.
- Report/test
- DIRC/COMCAL HV CAEN reboot test (Hovanes)
- Small beam energy-current correlation (Alex)
- Pending issues:
- TagM card issue, any update?