Reports until 00:00, Wednesday 19 August 2015
H1 General
thomas.shaffer@LIGO.ORG - posted 00:00, Wednesday 19 August 2015 (20665)
Ops Eve Shift Summery

I started the shift taking over for Travis trying to lock DRMI. Sheila suggested another Initial Alignment, so we did and watched for the control signals to settle down between each step. This helped significantly. This eventually brought us up past DRMI but we had a few instances of the PUM watchdogs tripping (see Jeff's alog).

When the PUMs stopped tripping we then saw that the violin modes where very rung up. Dan worked his magic on those while showing me how it works. We got them down to a managable level and then rang into a problem in COIL_DRIVERS. Lost lock several times here, and the commissioners are working on a fix.