oli.patane@LIGO.ORG - posted 07:33, Thursday 27 February 2025 - last comment - 08:05, Thursday 27 February 2025(83079)
Ops Day Shift Start
TITLE: 02/27 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: TJ
CURRENT ENVIRONMENT:
SEI_ENV state: USEISM
Wind: 3mph Gusts, 2mph 3min avg
Primary useism: 0.03 μm/s
Secondary useism: 0.72 μm/s
QUICK SUMMARY:
Currently relocking and at CARM_TO_TR
So last night Ryan adjusted the SRC2 P gain down from 60 to 40 during DARM_LOCKED_CHECK_ASC in order to try and stop the oscillations, and it worked (83074),. That value though of course was just a test and wasn't changed in the code, so I would have expected the next times passing through those states for it to have the oscillations again, but it hasn't. In the three times we've passed through DARM ASC-ville since then, with the SRC2 P gain at its original value of 60, that hasn't happened.