jeffrey.bartlett@LIGO.ORG - posted 07:06, Thursday 05 December 2019 - last comment - 11:40, Thursday 05 December 2019(53700)
Relock Summary
While working on relocking, noticed the "Fast Shutter Failed Test. HV Not Ready" message. This was after 13:00 (05:00) and Richard was due in in less than an hour, so opted to wait for his arrival. When Richard arrived, we went into the LVEA to look at the Fast Shutter Driver and Shutter Controller. Reset these and then took a look at the HV Interlock for HAM6. (See aLOG #53697). Richard got the Interlock to reset and I started to relock.
14:09 (06:09) Started relocking
14:13 (06:13) ACQUIRE_DRMI_1F
14:18 (06:18) ACQUIRE PRMI
14:20 (06:20) PRMI _LOCKED
14:24 (06:24) DRMI_1F locked
14:51 (06:51) Back at NLN
14:52 (06:52) Accepted 2 ETMX SDF Diffs and went back into Observing
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These SDF diffs are from ALS_XARM node INCREASE_POWER state. The problem has had a fix for a few days, but the fixed code has not been loaded into the node. Next chance we get, the operator has instructions to reload the node.