[Primexd] RC week summary, March 14-20

[Colin Gleason]

Dear Collaborators,

The previous week of PrimeX running was quite smooth. We took production
data from Wednesday until Sunday afternoon. At 3:30 pm on Sunday, we began
emptying the target to prepare for a TAC run and empty target running. We
did not begin TAC runs until Monday evening. Noisy BPMs and calibration of
the active collimator (implementing proper pedestal subtraction) prevented
us from starting it sooner. The TAC runs (
https://logbooks.jlab.org/entry/3669644 for more information) were stopped
Tuesday afternoon and empty target running proceeded until 7am on Wednesday
the 20th when RF recovery began. We refilled the target and people were
able to access the hall to do some work.

We did not lose much beam time this week as accelerator remained stable
after the energy change from the previous week. We had to make a few
unplanned accesses that caused some down time. On Thursday March 14, we
lost connection with an FCAL crate, which needed a new fan tray (
https://logbooks.jlab.org/entry/3667703). Another access was made on the
evening of Friday March 15 due to issues with the PS/ST crate. There was
some issue with the network connection that ended up fixing itself after
much troubleshooting from Hovanes (https://logbooks.jlab.org/entry/3668424).
In total, these and other minor issues created 6.9 hours of unplanned
downtime.

Thanks to all the shift crew and others who helped throughout the week.

-Colin

-- 
Colin Gleason
Postdoctoral Fellow
Indiana University
Department of Physics
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