[Halla_running] [Revised Logentry] RC Daily Update

[billlee at jlab.org]

Logentry Text:
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Hall A didn't receive any beam last night as planned. B, C, and D received beam. 

The 4th path RF separator work started at 9:30 am.   (experts completed between 1/3 to 1/2 of the work yesterday)
The projected time to complete this work is 4-5 hours.

We are getting ready for the beam and taking some cosmic data in the main while. The target polarization is around 40% (with BB and SBS magnets off, the calibration constant was slightly off).

Bill Henry found some interesting about the BBCAL trigger rate, and it might be related to the raster change see log entry below
https://logbooks.jlab.org/entry/4143923

Carlos also did some diagnostics with Grinch LED and dark rate, see below: 
https://logbooks.jlab.org/entry/4144159

No RC meeting today and hope we will receive the beam around 3 pm.

Also, if anyone could take the TO shift trade for this swing, will be greatly appreciated.

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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/4144382
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