[Sbs] [New Logentry] RC Daily Summary - 10/03/23

[ojevons at jlab.org]

Logentry Text:
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Yesterday was a bit of a wash as far as production goes, but we're back up and running now.

Day shift finished still waiting on the beam to be restored after the Pass 4 separator tweaking done by MCC. In the meantime, the laser PC that had been handed off to the Computer Center was returned. It doesn't seem to have hibernated since being worked on, but it is still worth keeping an eye on things to check that it won't. The target oven and lasers were brought back online at the end of the shift for the cell to spin up; an NMR taken at the start of this process had the polarization at 19.5%. Beam recovery was performed during Swing shift, and by the time that beam was ready at 23:25, the polarization had recovered to 38.1%. I decided to have the crew run at 40uA so that the cell had a bit more chance to ramp up, and its polarization steadily but surely increased over time. Day shift took over; with the stability of the target, we moved to running at 45uA at 08:50, and have been running smoothly at that current since. 

We have collected 
- 0.755C (OWL Monday)
- 0.685C (OWL Tuesday)
- 0.287C (DAY Tuesday, up to 13:23)

We will have the regular RC meeting at 3:30pm in the Counting House conference room to discuss the run plan going forwards. Alternately, people can join remotely via:

https://jlab-org.zoomgov.com/j/1616220064
Meeting ID: 161 622 0064
Passcode: 314159:

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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/4191807
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