[Halla_running] [New Logentry] RC Update Tuesday August 20 (RC Meeting today at 3:30 PM)

[cornejo at jlab.org]

Logentry Text:
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We continue taking production data on Pb#8 with 70 uA. The shift crew continues to simultaneously take Compton data.

We had a few hiccups in the last 24 hours:
1) Accelerator had two 1-2 hour downs due to cryo-modules.
2) The Compton laser IOC stopped responding and needed to be rebooted. The new fiber amp could not be rebooted from upstairs and required a short access to reset (ARM was able to support us due to it being a low dose zone).
3) This morning the collimator IOC needed to be rebooted, and came back up successfully.
4) Also this morning the parity alarm alerted shift workers to a rise in collimator temperatures, which had been caused by a beam drift (https://logbooks.jlab.org/entry/3721348). Shift workers reacted promptly, they notified MCC to turn off beam, requested that the beam be tuned before returning to high current running. A discussion was started about other checks or possibly and FSD that can aid the shift crew in responding to such a sudden temperature rise.

Let's continue this discussion today at the RC meeting. We should also discuss the upcoming run plans, including a low-current Q2 measurement Wednesday. Discuss when the next Moller and Wien flip should happen.

We'll have our usual RC meeting today at 3:30 in the second floor of the Counting House. For those participating from remote, here is the usual call-in instructions:

Bluejeans Meeting ID: 256 205 934
Direct bluejeans link: https://bluejeans.com/256205934

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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/3721379
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