Difference between revisions of "Run Planning Meeting Notes, November 30 - December 7, 2022"
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Back to [[Run Coordination Meetings:Fall2022]] | Back to [[Run Coordination Meetings:Fall2022]] | ||
| + | |||
| + | = Friday Dec. 2nd = | ||
| + | === Last 24h === | ||
| + | *Thursday was spent mostly with production on full target. It was an efficient day, with 17.8h of ABU (7am-7am). | ||
| + | *A. Somov did a low beam current test of the Active Colim. high gain in anticipation of a future TAC run. It looks good. | ||
| + | *Hall C was supposed to get back to running in mid-swing shift, which would be followed by us doing Harp scans (last ones done: Oct. 21st), but it did not happen (Hall C vacuum issue). | ||
| + | |||
| + | === Reports === | ||
| + | * | ||
| + | |||
| + | === Issues === | ||
| + | *The FDC fadc installed Wednesday by Naomi and Lubomir needs baseline calibration (Sergei, when we have ~20min of beam. No access needed). | ||
| + | *cdc p_diff alarms | ||
| + | |||
| + | === Short term run plan === | ||
| + | *Hall C is expected to be back to running ??any time??. | ||
| + | *Harp scan after Hall C beam is tuned (last harps done on Nov. 21st, but [https://logbooks.jlab.org/entry/4093519 Transmission is fine.]) | ||
| + | |||
| + | === Tentative longer term run plan === | ||
| + | *TAC run | ||
| + | *Luminosity study | ||
= Thursday Dec. 1st = | = Thursday Dec. 1st = | ||
Revision as of 08:14, 2 December 2022
Meetings are via ZoomGov: connect (Meeting ID: 160 199 0060 / Passcode 8394)
Hall D counting room white board
Back to Run Coordination Meetings:Fall2022
Contents
Friday Dec. 2nd
Last 24h
- Thursday was spent mostly with production on full target. It was an efficient day, with 17.8h of ABU (7am-7am).
- A. Somov did a low beam current test of the Active Colim. high gain in anticipation of a future TAC run. It looks good.
- Hall C was supposed to get back to running in mid-swing shift, which would be followed by us doing Harp scans (last ones done: Oct. 21st), but it did not happen (Hall C vacuum issue).
Reports
Issues
- The FDC fadc installed Wednesday by Naomi and Lubomir needs baseline calibration (Sergei, when we have ~20min of beam. No access needed).
- cdc p_diff alarms
Short term run plan
- Hall C is expected to be back to running ??any time??.
- Harp scan after Hall C beam is tuned (last harps done on Nov. 21st, but Transmission is fine.)
Tentative longer term run plan
- TAC run
- Luminosity study
Thursday Dec. 1st
Last 24h
- Wednesday started with production on empty target. It was an efficient day, with 17.1h of ABU (7am-7am).
- 9:10am-11:30 Rapid access to change fadc for FCal and FDC, and fill the target.
- Filled the target, from 10am-1pm. It took 3h to reach nominal density, and the first production runs are done while it was still filling. Target status indicated that it was full&ready by 11:30am.
- Hall A re-started running at 17:48. A consequence is that the Hall D beam energy was quite instable from 6pm (Wed.) to 1am (Thursd.), with total drift of about 14 MeV.
Reports
- PrimEx Analysis progress (Drew)
Issues
- The new FDC fadc is worst than the one replaced (Naomi/Lubomir). The problem is only for raw mode run.
- Many cdc p_diff alarms (e.g. 0.8 alarm/hour during swing and owl shifts) leading to runs often shorter than 2h (this has already been discussed several time. This is just a report).
Run plan
- Hall C is expected to be back to running during swing shift today.
- 20 min test at low beam current/high Active Colim. gain to see if adjustment are needed (A. Somov)?
- Last harp scan was done on Nov. 21st. Should we do a new one? (Transmission is fine.)
- Luminosity study?
