anthony.sanchez@LIGO.ORG - posted 08:09, Sunday 04 June 2023 - last comment - 09:47, Sunday 04 June 2023(70114)
Sunday OWL Shift End
TITLE: 06/04 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 11mph Gusts, 9mph 5min avg
Primary useism: 0.03 μm/s
Secondary useism: 0.11 μm/s
QUICK SUMMARY:
8:15 UTC 18hours of Lock!
13:56 Lockloss due to ETMX L3 Motion after 23 hours of lock.
Relocking:
I tried to just quickly relock with out an Initial Alignment, and lost lock at Locking ALS.
I then did a Initial Alignment and and started relocking again.
There were 2 Locklosses at TRANSITION_DRMI_TO_3F, but on the 3rd attempt H1 was able to make it PREP_ASC_FOR_FULL_IFO.
Current IFO Status: LOCKING.
After the long lockloss occurred, the ISI HAM 7 WD was tripped and was not reset properly upon relocking. We are now relocking at MAX_POWER with the WD still tripped and all BLRM bandpasses are railed - ss attached, preventing me from untripping the WD. Will monitor as the BLRMs seem to be slowly going down. - Tagging SEI
It looks like the corner2 ISI Interface chassis might have failed. Working with Dave and CDS to try to get someone out to try to replace it.
It looks like the corner2 ISI Interface chassis might have failed. Working with Dave and CDS to try to get someone out to try to replace it.