Difference between revisions of "Run Planning Meeting Notes, October 21 - October 27, 2021"
From GlueXWiki
(→Friday, October 22) |
(→Friday, October 22) |
||
Line 36: | Line 36: | ||
#* Bleedthrough | #* Bleedthrough | ||
# [https://halldweb.jlab.org/primexd/run_plan/Run_Plan_Fall_2021.pdf Plan:] | # [https://halldweb.jlab.org/primexd/run_plan/Run_Plan_Fall_2021.pdf Plan:] | ||
− | #* Call Chris Keith (to watch the target fill) | + | #* Call Chris Keith (to watch the target fill). This was done at about 9:30am. The shift crew are here. |
− | #* When the beam is back continue production at 200nA after the usual checks (radiation levels & harp scans) | + | #* 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 | #* Continue running with the solenoid on & target full until further notice | ||
#* [https://cebaf.jlab.org/files/ops/accboard/ Pass change for A&B might be deferred to Saturday swing or Sunday day (A->4 pass)] | #* [https://cebaf.jlab.org/files/ops/accboard/ Pass change for A&B might be deferred to Saturday swing or Sunday day (A->4 pass)] | ||
#* Expect downtime Monday morning for VIP tour, start time TBC probably ~7am. | #* Expect downtime Monday morning for VIP tour, start time TBC probably ~7am. |
Revision as of 09:47, 22 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). This was done at about 9:30am. The shift crew are here.
- 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 might be deferred to Saturday swing or Sunday day (A->4 pass)
- Expect downtime Monday morning for VIP tour, start time TBC probably ~7am.