[Lad_hallc] [Revised Logentry] RC Report 22 May 2025

[schmidta at jlab.org]

Logentry Text:
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During yesterday's maintenance day, Facilities found moisture infiltration near the electrical switch board, and the decision was made to power down pretty much everything in the hall, including magnets, cryo, and the target. Fortunately, there was enough time to avoid a hard shut down, and systems were powered down safely. Yesterday's swing shift was cancelled. All shifts for today are cancelled, including tonight's owl shift. (As of now, tomorrow day shift should still report at 8 AM.) Repairs to fix the leak in the hall are on-going. The plan is to test those repairs tomorrow morning, and then make the decision about how and when to power on. 

In terms of other work in and around the hall:
- An inspection of door 2 found nothing wrong: https://logbooks.jlab.org/entry/4380285
- Holly inspected the GEM with the large current draw on the g3T channel (https://logbooks.jlab.org/entry/4380263). More work is needed to diagnose the problem. 

SHIFT SUMMARIES:

No shifts

RUN PLAN:

It is not clear yet for how long we will be down. Once we get the go ahead to power back on, we will work to restore the vacuum, cryo, magnets, spectrometers, etc. 

Once, we are back online...we would like to take a few hours with carbon multifoil at 1 uA for calibration, but then we plan to continue production with D2, with single arm measurements once per day.

NOTES FOR SHIFT TAKERS:

Please keep an eye out for further shift cancellations. The situation is evolving, and I thank you for your flexibility.

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We will have our regular RC meeting in person, at CH conference room at 2:30

Online information here -> https://logbooks.jlab.org/entry/4346862

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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/4380989
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