Difference between revisions of "Run Planning Meeting Notes, October 21 - October 27, 2021"
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=Friday, October 22= | =Friday, October 22= | ||
− | # Production runs | + | # Last 24h: Production runs continued smoothly until 2:51pm when an ARC magnet tripped. About 7pm the team looking at the power supply found that there was a short in any one of the 42 magnets downstream, they will resume work in the morning. [https://logbooks.jlab.org/entry/3930057 Shifts were cancelled until 9am.] |
+ | #** [https://logbooks.jlab.org/entry/3929614 extra PS shielding added on Wednesday] | ||
+ | #** [https://logbooks.jlab.org/entry/3929964 FCAL comms restored] | ||
+ | |||
+ | # Remaining issues: | ||
+ | #* BCAL noise at 10 o'clock | ||
+ | #* Bleedthrough | ||
+ | # [https://halldweb.jlab.org/primexd/run_plan/Run_Plan_Fall_2021.pdf Plan:] | ||
+ | #* Call Chris Keith (to watch the target fill) & staff the counting house when we expect beam within 3h. | ||
+ | #* When the beam is back continue production at 200nA after the usual checks (radiation levels & harp scans) | ||
+ | #* Continue running with the solenoid on & target full until further notice | ||
+ | #* [https://cebaf.jlab.org/files/ops/accboard/ Pass change for A&B Saturday morning (A->4 pass)] | ||
+ | #* Expect downtime Monday morning for VIP tour, start time TBC probably ~7am. |
Revision as of 22:53, 21 October 2021
<-- Summer 2021 RC meetings MCC whiteboard
Thursday, October 21
- Last 24h:
- No beam from 5:20pm Tuesday until early am Thurs due to LCW/power problem. Resumed production ~3:30am.
- New harp scan Previous harp scan
- Work done during the access:
- magnetic field measurements around CCAL
- 15 FCAL bases replaced and re-terminated one cable
- faulty FDC chiller replaced
- rebalanced the server power load on rack 13
- position survey CCAL
- correct shielding at the left (downstream) PS arm
- Remaining issues:
- Tagger hodoscope time shifts
- communication with accel. w.r.t. tagger magnet - Paul Vasilauskis (Ops group leader): "I am putting out to my staff to contact the hall if they do need to touch the magnet and am looking into adding wording to the magnet screens"
- BCAL noise at 10 o'clock
- Bleedthrough
- Plan:
- When the beam is back continue production at 200nA after the usual checks (radiation levels & harp scans)
- Continue running with the solenoid on & target full until Friday or later
- Pass change for A&B Saturday morning (A->4 pass)
- Expect downtime Monday morning for VIP tour, start time TBC probably ~7am.
- Ops will need another maintenance day before the energy change
Friday, October 22
- Last 24h: Production runs continued smoothly until 2:51pm when an ARC magnet tripped. About 7pm the team looking at the power supply found that there was a short in any one of the 42 magnets downstream, they will resume work in the morning. Shifts were cancelled until 9am.
- Remaining issues:
- BCAL noise at 10 o'clock
- Bleedthrough
- Plan:
- Call Chris Keith (to watch the target fill) & staff the counting house when we expect beam within 3h.
- When the beam is back continue production at 200nA after the usual checks (radiation levels & harp scans)
- Continue running with the solenoid on & target full until further notice
- Pass change for A&B Saturday morning (A->4 pass)
- Expect downtime Monday morning for VIP tour, start time TBC probably ~7am.