[Hallc_running] [New Logentry] RC daily update

mnycz at jlab.org mnycz at jlab.org
Sun Aug 16 11:25:02 EDT 2020

Logentry Text:
We continued to take production data on the polarized He3 target during DAY and SWING shifts. 

At the end of SWING, the alarm gui handler became unresponsive --  https://logbooks.jlab.org/entry/3828277
Brad was able to get it back up and running ---- https://logbooks.jlab.org/entry/3828319
Shortly after, it was noticed that the QWP drivers and controllers needed to rebooted as well ---- https://logbooks.jlab.org/entry/3828324
Also, a Pumping chamber RTD-1error --- https://logbooks.jlab.org/entry/3828353 and https://logbooks.jlab.org/entry/3828350

Since the laser was off for ~ 1 hour, we moved to the reference cell (Hydrogen and Nitrogen) in order to allow for the polarized target to reach back to the ~40% range.

Around the start of DAY shift, there was a CHL trip --https://logbooks.jlab.org/entry/3828567. Estimate is that accelerator will be down for ~ 4 hours. The plan is to check the polarization before MCC is ready to deliver beam and then to continue with production on the polarized He3 cell. 

We will meet today at 4:15pm via Bluejeans 861439920 ---- https://hallcweb.jlab.org/wiki/index.php/RC_Update_and_Run_Plan_for_Aug_16,_2020


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/3828623
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