[Halla_running] [New Logentry] RC daily summary Oct 14 2023

[efuchey at jlab.org]

Logentry Text:
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Brief summary for today:

Production is going on, beam overall pretty good;
Accumulated charge (corrected for polarization) since we resumed production on Friday 13th Owl: 2.387C (who said those were bearing bad luck btw? :D )

Yesterday evening, Andrew P. managed to reintroduce SBS GEM tracking in the online replay: https://logbooks.jlab.org/entry/4198856 
This morning, Jack J. tuned up the lasers to optimize polarization:
https://logbooks.jlab.org/entry/4199451
target pol went from 36.2% https://logbooks.jlab.org/entry/4199373
to 37.5% https://logbooks.jlab.org/entry/4199509

Also, potential good news, Bill H. had a second look at all the EPR measurements on Christine:
https://logbooks.jlab.org/entry/4199473
That remains to be thoroughly discussed by all target experts, but he thinks that we underestimate our polarization by 10-15% relative... That would of course be excellent, but as long as we are not sure, we keep the current NMR calibration coefficient of 0.81... I'd rather come back and say "Oh, it was even better" that "Oh, actually it was worse..." :)

Minor problems:
* BB and SBS GEM trip quite often, but GEM experts investigate the issue.
* IOCHA26 tripped https://logbooks.jlab.org/entry/4199529 Recovered rather swiftly: https://logbooks.jlab.org/entry/4199555

We haven't met today and won't meet tomorrow, we will meet Monday.
Let's hope we won't run out of luck over the weekend.

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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/4199614
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