[Hallc_running] [New Logentry] RC daily update -- 08/06/25

[hanjie at jlab.org]

Logentry Text:
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Yesterday, the positron background runs are complete at 7:50 pm. Setting up the electron-pion+ kinematics at 11.070 deg took about an hour. Right after resuming the beam, the SHMS Q3 interlocked (https://logbooks.jlab.org/entry/4435908). It was cleared by the engineer remotely. Only 30 minutes were lost on this. Then we ran at 40 uA at the LD2 target and finished one low current run before SHMS HB interlocked (https://logbooks.jlab.org/entry/4436032). The shift crew cleared it by power cycle the PSU (https://logbooks.jlab.org/entry/4436042). Similar time, MCC ran into VFV1L27 valve issue which requires an access. It was decided to wait until the maintenance start (6:45 am). The beam has been down since 2 am. 

Today is the maintenance day, which would likely take the entire day shift. Hall is in controlled access. Please let the shift leader know that you're going to the hall.

We will hold our regular RC meeting today at 2:30 PM. The Zoom link is provided below.

https://jlab-org.zoomgov.com/j/1618227115?pwd=8JkhFg6YNesVc3HNgWjwUSIKIu...

Meeting ID: 161 822 7115
Passcode: 253463

8/05 Day shift summary: https://logbooks.jlab.org/entry/4435397
8/05 Swing shift summary: https://logbooks.jlab.org/entry/4435743
8/06 Owl shift summary: https://logbooks.jlab.org/entry/4435989





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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/4436193
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