Reports until 17:27, Wednesday 05 March 2025
H1 General
anthony.sanchez@LIGO.ORG - posted 17:27, Wednesday 05 March 2025 (83202)
Wednesday Eve Shift Sign in report.

TITLE: 03/06 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 137Mpc
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 13mph Gusts, 10mph 3min avg
    Primary useism: 0.04 μm/s
    Secondary useism: 0.29 μm/s
QUICK SUMMARY:

Lockloss right at the start of my shift from a small local 3.9M earthquake.
Lockloss page says that it was caused by anthropogenic source but when we lost lock we saw UW's Picket fence ground motion increased and we had an increase in our ground motion on the H1:ISI-GND_STS_ITMY_{X,Y, Z}_BLRMS_{1_3, and 3_10}. BUT we didn't see it on the top of NUC 5. Which is strange.
This lockloss may have been first logged in Ryan C's outro alog.

I started relocking without an Initial_Alignment, H1 requested Find X-Arm by hand. I took X arm to Increase flashes, which worked great! 
PRMI locked on a crazy mushroom shaped mode. I decided to see if it could lock DRIMI like that, and if it was having trouble then i'd just run an Initial Alignment if it failed. But it Actually locked pretty quickly!

Nominal Low Noise reached at 1:23 UTC
Observing Reached at 1:26 UTC