ibrahim.abouelfettouh@LIGO.ORG - posted 08:12, Sunday 17 March 2024 - last comment - 09:42, Sunday 17 March 2024(76465)
OPS Day Shift Start
TITLE: 03/17 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Commissioning
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 3mph Gusts, 2mph 5min avg
Primary useism: 0.02 μm/s
Secondary useism: 0.18 μm/s
QUICK SUMMARY:
IFO is LOCKING (but seems to need help)
Other:
Seems hat the last lockloss happened ~4.5 hrs ago, triggered by an IY ISI Stage 1 and 2 WD Trip. No earthquakes occured during this time.
H1:PEM-CS_DUST_PSL101 dust counts did not change, please investigate.
EX Pressure EX_X5_PT526 MOD1 PRESS TORR is showing a yellow alert on the vacuum alarm handler.
The ITMY trip seems to have been caused by the corner 1 interface chassis failing. All of the corner 1 CPS, L4C and GS13s are dead. Probably need to swap it out so Fil can take a look, but I think our only spare is installed in HAM8, at the moment.