[Prex] [New Logentry] RC daily update

[tianye at jlab.org]

Logentry Text:
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Dear All,

Call for signing up shifts:
The CREX experiment has been extended to Apr.20th, we need people to sign up for the shifts. https://misportal.jlab.org/mis/apps/physics/shiftSchedule/index.cfm?experimentRunId=PREX/CREX

The average efficiency for yesterday DAY shifts is ~39%,  and there were two beam downtime (~3 hours) caused by 1L23 recovery trouble and laser CW Beam mode/FSD trip repair. MCC did A2 interception steering at the beginning of yesterday swing shift, and the PQB had been checked as OK by Caryn https://logbooks.jlab.org/entry/3798719. The production runs smoothly for yesterday swing and owl shifts, and the average efficiency is ~62%. There was no major downtime during last night, just more beam trips. Accumulated charge from yesterday Day shift to today Owl shift is ~7C and we are in the middle of slug157 now. 

During this morning, there are general instability of the RF system and corresponding high trip rate. The crew chief is working on the BLM trips in the 9S00 region now, which mainly influence the HallC beam so far.

Plan is to continue production.

We will not have the regular RC meeting today.

Ye Tian (Hall A Run Coordinator)

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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/3799208
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