[Hallc_running] [New Logentry] RC Update

[wmhenry at jlab.org]

Logentry Text:
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There will be some downtime today while accelerator works on delivering higher currents to Hall C.  We received 25 uA overnight when beam came back after some RF recovery and surveys were done yesterday.  There was no evidence of scraping or beam line misalignment after Radcon and Survey/Alignment were in the area of the tunnel where BLM trips are preventing high current to C.  After the 8:00 am meeting, there was a lengthy discussion regarding what the path forward will be to get high current to the Hall.  The current plan is to restore the cavities to where we were two days ago to see if we can get back to the 50 uA we had.  They will also try to magnetically extracting beam to Hall C and look at the 8E02 BLM on a scope.  Beam will most likely be down for most of the day and the Hall will stay in beam permit.

>From a Hall standpoint, the HMS Q2 power supply was repaired by Steve yesterday.  The low voltage on the HMS drift chambers was also replaced and the noise in the chambers has not been present the past 36 hours.  We will meet today at 11am here:

https://jlab-org.zoomgov.com/j/1607100885?pwd=ZFBsRTFsYm5Zb0laZ0tyZXNjcEE0QT09

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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/4008666
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