[clas_members] [Revised Logentry] RC summary 08/22/2025

[efuchey at jlab.org]

Logentry Text:
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Yesterday morning, we continued 300nA production on 4He until 11:15am.
Beam taken away for full survey (11:30am) and preparation of the Hall for the tour.
During the down lots of DC dark current alarms. They were eventually fixed by raising the alarm levels https://logbooks.jlab.org/comment/55266#comment-55266
Target was purged and emptied for beam reestablishment and for Empty target data taking after the tour.   
Tour started around 2:45pm and was completed around 3:10pm.

Denny switched off the lights, brought back on the beacons and the air handlers at 3:20pm.
Sweep requested immediately after, and completed at 16:02pm.
Magnets finished ramping at 5:15pm, after which we initiated beam recovery procedure.
Salutes to Pierre for doing a 3rd beam recovery procedure in a row o7

Back to production by 6:00pm.
Run at 500nA on empty target for 4 hours until 10pm.
DC dark current alarms reappeared. It has been determined by the experts that those were harmless and were subsequently deactivated https://logbooks.jlab.org/entry/4447974
Target filled at 10pm with 4He 66 psi at 10pm.
Run on 4He at 100 nA from 10:10pm to 7:40am.
Running on 4He at 300nA since 7:40am. Plan to run like this all weekend, until the pass change on Monday.

Note/news from MCC: 
Monday will just be a pass change for Hall B (from pass 3 to pass 1), but the Wein angle change shall not happen until Thursday

RC meeting will be at 11:30, either in person at CH 200 or on zoom at https://jlab-org.zoomgov.com/j/1605705819
We will discuss, among other things, the plan for and after the pass change on Monday.

Shift summaries:
DAY:  https://logbooks.jlab.org/entry/4447532
SWING: https://logbooks.jlab.org/entry/4447777
OWL: https://logbooks.jlab.org/entry/4448008

ABU/BANU/BNA+OFF from 8/21 8am to 8/22 8am: 911+/123+/406
DAY: https://logbooks.jlab.org/entry/4447770
SWING: https://logbooks.jlab.org/entry/4447998
OWL: https://logbooks.jlab.org/entry/4448277



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