Reports until 16:39, Sunday 03 November 2024
H1 General
oli.patane@LIGO.ORG - posted 16:39, Sunday 03 November 2024 (81041)
Ops Day Shift End

TITLE: 11/04 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Microseism
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY: Currently still trying to relock, and at POWER_25W. All day we've been working on getting back up, but the secondary microseism is so high. It is slowly coming down though. At one point, we were in OMC_WHITENING for over an hour trying to damp violins so we could go into NLN,  but we lost lock before we could get there.
LOG:

15:30 In DOWN due to very high secondary useism
15:38 Started relocking with an initial alignment
    - When we got to PRC, I had to do the Pausing-PSL_FSS-Until-IMC-Is-Locked thing again (see 81022)
    - 16:04 Initial alignment done, relocking
    - Lockloss from ACQUIRE_DRMI_1F, OFFLOAD_DRMI_ASC, ENGAGE_ASC_FOR_FULL_IFO, TRANSITION_FROM_ETMX
    - 18:07 Sitting in DOWN for a bit
    - 18:45 Started relocking
    - More locklosses
    - 21:48 Lost lock after sitting in OMC_WHITENING damping violins for over an hour
    - More trying to lock and losing lock                                                                                                                                               

Start Time System Name Location Lazer_Haz Task Time End
17:37 PEM Robert CER n Improving ground measurement 17:44