TITLE: 09/17 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 154Mpc
OUTGOING OPERATOR: TJ
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 2mph Gusts, 1mph 3min avg
Primary useism: 0.01 μm/s
Secondary useism: 0.17 μm/s
QUICK SUMMARY:
H1 is locked and Observering for 12 hours.
The Violins are very upset, seems like EMTY mode 1 is angry. DCPDS are very diverged.
Main DARM screen is being restarted.
A new Diag_Main:
SEI_STATE: SEI_CONF might be stuck
15:30 UTC I put the nominal gain of -0.1 into ETMY mode1 and it started to damp down.
Iit looked like it was damping at the beginning of the lock with a negative gain, but at 03:44 UTC the gain was changed from -0.2 to +0.2 without pausing at zero which is the safe thing to do. The mode pretty much immediately started to ring up until guardian turned it off at 04:38 UTC. It was damping with nominal at the start of the lock but it was increased in a few steps from -0.1 to -0.4, ETMY mode1 is a finicky mode, increasing the gain does not always increase the damping rate.