[Rgc] [Revised Logentry] Owl Shift Summary

hattawy at jlab.org hattawy at jlab.org
Mon Mar 13 08:05:02 EDT 2023


Logentry Text:
--
00:00 Called MCC. No estimate for the beam back yet.
00:13 MCC called. Beam is back. Starting run 17767.
00:55 BMT HV Sec2 L1 strip tripped. Turning off and back on. We noticed that Vset is back to 500 V (we changed it to 480 V the other day), but found no log entry about it.
02:14 BMT HV Sec2 L1 strip tripped again. Turning off and back on.
02:18 BMT HV Sec2 L1 strip tripped again. Changing Vset from 500 V to 480 V and Iset from 2 uA to 3 uA and ramping up to high voltage. Mohammed has been instructed by Yuri to do this whenever needed.
03:59 Ending run 17767 with 43M events. Starting new run.
04:50 Called MCC to correct 2C21 x position because it was at -0.2mm for the whole shift, and prescripted is -0.4mm
05:10 Called MCC to put orbit locks on 2C24 and 2H01 because beam position was very good.
06:42 BMT HV Sec3 L1 strip tripped. Turned off and back on.
06:43 Called MCC to take the beam away. Also called Eugene to start ramping down the magnets.
07:46 Both magnets are rampped down. 

Shift summary:
ABUs: 266 minutes. 
BNAs:159 minutes 
Total events: 74M triggers on empty target setting. 

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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/4148583
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