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Reports until 01:17, Thursday 15 October 2015
H1 General
cheryl.vorvick@LIGO.ORG - posted 01:17, Thursday 15 October 2015 (22537)
Ops Owl Shift: Relocking IFO

Title: Owl Shift Transition Alog, Owl Shift 07:00-15:00UTC (00:00-08:00PT)

H1 State: Has relocked and made it to Low Noise and Observe, but only lasted 2-3 minutes - Relocked and back in Observe

Outgoing Operator: Corey

Help from: Sheila, Kiwamu

Details:

For the first lock, my interventions:

- I tweaked TMSY to raise the ALS arm power from 0.8 to 1.01

- I tweaked BS to lock DRMI, and then again after DRMI locked in order to get WFS to engage

- IFO went to Low Noise after that without issue

 

07:34:04UTC - IFO in Observe

07:37:06UTC - lock loss

 

For the second lock, my interventions:

- I tweaked BS after DRMI locked before WFS engaged

- IFO went to Low Noise after that without issue

 

08:06:14UTC - IFO in Observe

 

Issues?

08:07:53UTC - ETMY saturation

 

08:16UTC - Currently: IFO in Observe and range is 75Mpc

Displaying report 1-1 of 1.