[Hallc_running] [New Logentry] RC Summary July 1st

ehingerl at jlab.org ehingerl at jlab.org
Tue Jul 1 08:45:02 EDT 2025


Logentry Text:
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Beam and data taking has continued quite well for the past day, including one period with >1hr of no trips (https://logbooks.jlab.org/entry/4408811).

Yesterday's wein angle test did not deliver much beam to the hall, but what little beam we received was usable. 
Early Owl shift, the HCDESK4 computer froze and had to be manually restarted; Data taking was not significantly impacted, as coda continued to run on the vnc server with near 100% live time. https://logbooks.jlab.org/entry/4409201
This was preceded by another HCDESK4 computer error during day shift, where the gui froze and had to be xkill'ed. https://logbooks.jlab.org/entry/4408889


Wednesday will be a maintenance day, with beam down for 4 hrs followed by RF recovery. Beam will go down at ~6:45am. Expect hall access ~7:30-8:00. Please let the RC know if you would like a hall access during this time. We'll perform a full sweep, but remain in controlled (if the door permits). 
There is a Hall C walkthrough (tentatively) planned for 11am this Wednesday. Reach out to Sam Hahn for scheduling.

We are also planning on a BCM calibration this Wednesday, using the injector Faraday Cup. MCC will perform the measurement at ~5:30am, before the start of maintenance. Dave Mack will finalize the exact runplan today.

Plan for the day:
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Take 1 hr runs on LD2 in loop 3 at 0.3uA with ps2=ps4=0, until further notice.
Once per day, take single arm runs for 10 min each. Alternate daily between ps2&ps4=0 (even days) and ps1&ps3=0 (odd days)
https://logbooks.jlab.org/entry/4407478
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We will have our regular RC Meeting today at CH conference Room and via zoom ( https://logbooks.jlab.org/entry/4346862)
The online information is here: https://hallcweb.jlab.org/wiki/index.php?title=July_1,_2025

Thanks to all shift workers for helping out! Only six shifts left for the LAD experiment!
https://misportal.jlab.org/mis/physics/shiftSchedule/index.cfm?experimentRunId=HALLC-LAD

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Day Shift June 30:
Summary: https://logbooks.jlab.org/entry/4408639
BTA: https://logbooks.jlab.org/entry/4408895
Magnets: https://logbooks.jlab.org/entry/4408663
Checklist: https://logbooks.jlab.org/entry/4408667

Swing Shift June 30:
Summary: https://logbooks.jlab.org/entry/4408913
BTA: https://logbooks.jlab.org/entry/4409107
Magnets: https://logbooks.jlab.org/entry/4409005
Checklist: https://logbooks.jlab.org/entry/4409084

Owl Shift July 1:
Summary: https://logbooks.jlab.org/entry/4409114
BTA: https://logbooks.jlab.org/entry/4409352
Magnets: https://logbooks.jlab.org/entry/4409246
Checklist: https://logbooks.jlab.org/entry/4409245

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This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/4409383
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