Reports until 09:56, Monday 27 July 2015
edmond.merilh@LIGO.ORG -
posted 09:56, Monday 27 July 2015 - (19956)
H1 operator morning locking summary
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IFO had been unlocked since the Alasakan earthquake activity.
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Guardian had been set to lock the ALS and it was locked and looking good.
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SUSDIAG notifications reporting high AOM diffracted power in ISS. Found 14% diffracted power. Adjusted down to 7%
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Initiated first attempt at DRMI lock at 08:04. Alignment looked pretty bad so initial alignment checks began.
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Even with ISC_LOCK in 'DOWN' state, Guardian seemed to still be wanting to take over which made intial alignment rather tedious. After the tug of war, I got things aligned better and was able to achieve DRMI lock on 1F. The transfer to 3F ws unsuccessful.
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IFO turned over to commissioners for measurements
Evan mentioned he had a similar experience with guardian continuing to try to lock the mode cleaner after he had brought ISC_LOCK to down
When you are doing an inital alingment, you will want to set the guardains you are using (ALIGN_IFO, the ALS ones ect) to manual (so that the backgrounds are purple). It seems like having the mode cleaner relocking itself should not be a problem.