[Dsg-halla_ecal] [Revised Logentry] ECal temperatures slowly recovering

[jonesdc at jlab.org]

Logentry Text:
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Around 10PM Saturday, 16 zones of out of 48 of the ECal heater system stopped updating temperatures. Sunday morning around 10AM a second event occurred where all EPICS values stopped updating suggesting either a network issue or a glitch with the controls program. After this second event the cooling accelerated and many zone currents went to 0. As a result, there was a significant cooling of the detector. Temperatures are seen in attachment 1 and zone heater currents in attachment 2. Interestingly, the trigger rate did not seem to be appreciably affected. Between 6 and 7AM Monday, I made several changes resulting in the currents returning to more or less expected levels.

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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/4378602
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