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Reports until 18:06, Tuesday 12 March 2019
H1 SQZ (SQZ)
nutsinee.kijbunchoo@LIGO.ORG - posted 18:06, Tuesday 12 March 2019 (47481)
SQZ laser running multimode again

We moved the laser temperature and current combination to a better region in January, but since March 4th the laser has been drifting in and out of multimode. After the laser tripped couple of times this morning it never recovered. It's almost like the multimode is slowly creeping upon us.

 

The current was found at 2.006A instead of 2.016A (temperature stayed the same). I tried to go back to the original value but that made multimode worse. The current setting is now 1.954A, 33.72C.

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