Reports until 14:03, Monday 26 October 2015
H1 OpsInfo
cheryl.vorvick@LIGO.ORG - posted 14:03, Monday 26 October 2015 (22846)
Ops Day Shift - Mid-shift update:

Day Shift: 15:00-23:00UTC, 8:00-16:00PT, times listed in UTC

 

Update on IFO:

 

- morning alignment issues: LSC to ETMX gain was zero when trying to lock the X arm on IR

--- the gain needed to lock was 0.10, when the usual gain set by Guardian is 0.05

 

- 18:40-18:41UTC switched ISI platforms to Quite_90s from 45mHz

--- reason: Quite_90s are better in wind, and 45mHz are know to be bad in wind, and wind is between 20 and 25mph

--- result: X and Y ALS arm signals dip to 0.7-0.8 while arms are locked in green (max is 1.09)

--- before switching to 45nMz, arms only dip down to 0.9-0.95

 

- as of 20:40UTC, IFO is well aligned and locking DRMI, but not making it much past DRIM

--- plan is to continue to let the IFO try for DARM_WFS