Reports until 23:40, Monday 25 February 2019
H1 SQZ
sheila.dwyer@LIGO.ORG - posted 23:40, Monday 25 February 2019 (47125)
AS42 loops closed

Peter F, Sheila

We had a chance to close the AS42 loops this afternoon, which we did with the settings in the attached screenshot.  These are low bandwidith loops, but are probably good enough to start with.  The pitch loops started to oscillate with a factor of 3 more gain.  

This hasn't been added to the guardian yet, and we didn't get a chance to see any impact on squeezing since the interferometer wasn't in low noise when we did this, but we were able to see that the loops increased the 3MHz transmitted through the OMC. 

Images attached to this report