Reports until 00:07, Friday 29 December 2023
H1 General
oli.patane@LIGO.ORG - posted 00:07, Friday 29 December 2023 (75071)
Ops EVE Shift End

TITLE: 12/29 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 155Mpc
INCOMING OPERATOR: TJ
SHIFT SUMMARY: Currently Observing and have now been Locked for 3.5hours. Spent most of my shift waiting for the violins and DCPD values to go down to be able to lock. Like I said in my midshift update(75070), I don't know if I could have gone into NOMINAL_LOW_NOISE earlier than I did, since the DCPD_WINDOW value were so high, and going into NLN usually raises them further.
LOG:

00:00 Detector in MAX_POWER

01:40 I took us to LOWNOISE_ASC, and then continued stepping through states one at a time.
01:52 Reached OMC_WHITENING
    - Violins are still really high, and DCPD counts are more than twice as large(based on ndscope) as they typically are when in OMC_WHITENING.

02:48 Earthquake mode activated

02:57 Back to CALM

04:27 NOMINAL_LOW_NOISE
    - I was so sure that we would saturate or that the DCPD counts would at least jump way up but they didnt change at all?

04:28 Observing