[Hallc_running] [New Logentry] RC daily report -- 08/04/25

[hanjie at jlab.org]

Logentry Text:
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Yesterday after ramping up the HMS dipole from the hall manually, we start taking positron data around 12 pm. Immediately, it was noticed that HMS S1X11+ was having low ADC and TDC occupancy. This is fixed by touching the cables at the spliter. Here is the instruction for fixing S1X11+ issue if it happens again: https://logbooks.jlab.org/entry/4433880. Around similar time, MCC had an IOC fault which dropped the entire linacs to power permit. It took about 1.5 hours to solve that. Since then (2 pm), it's been running smoothly. The positron pion+ runs are complete at 8 am when Hall B pass change has started. We will take the down time to set up the spectrometers for the positron pion- runs. The engineers are trouble shooting the HMS dipole remotely ramping up issue.

Once the beam is back, the positron pion- runs will likely take 14 hours to complete considering all the target changes. 

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

8/03 Day shift summary: https://logbooks.jlab.org/entry/4433711
8/03 Swing shift summary: https://logbooks.jlab.org/entry/4433924
8/04 Owl shift summary: https://logbooks.jlab.org/entry/4434229



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