Reports until 00:35, Tuesday 27 June 2017
H1 General
edmond.merilh@LIGO.ORG - posted 00:35, Tuesday 27 June 2017 - last comment - 00:37, Tuesday 27 June 2017(37154)
Shift Transition - Owl

TITLE: 06/27 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 75Mpc
OUTGOING OPERATOR: Travis
CURRENT ENVIRONMENT:
    Wind: 4mph Gusts, 2mph 5min avg
    Primary useism: 0.01 μm/s
    Secondary useism: 0.12 μm/s
QUICK SUMMARY:

I walked in on Travis doing line-by-line Guardian at SRC_ASC_HIGH_POWER with Sheila on the phone. It seems whatever was going on was resolved before he left. While they were oin that I had to damp PI mode 28 which took some doing. It was starting to drag mode 20 and mode 27 with it and the PLL was not staying tuned very well so I was chasing that around for a while to get a more positive hold on the changes I was trying to effect with phase and gain. Those change diffs were accepted by Travis. At this time Guradian is reporting that PSL_ISS: diffracted power is high (6.7%) but DARM between 10 and 20Hz looks really good compared to last night and we're above 70Mpc in range. I'm not complaining.

 

Comments related to this report
edmond.merilh@LIGO.ORG - 00:37, Tuesday 27 June 2017 (37155)

Correction: Guardian was stopped at SRC_ASC_HIGH_POWER so he could step through NOISE_TUNINGS.