aLIGO LHO Logbook

LHO General

thomas.shaffer@LIGO.ORG - posted 13:57, Wednesday 12 February 2025 (82765)

Ops Day Shift End

TITLE: 02/12 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 153Mpc
INCOMING OPERATOR: Ibrahim
SHIFT SUMMARY: Locked for 2 hours so far. Two relocks during my shift, both needed initial alignment. On the second one, Sheila went onto ISCT1 to better align ALS Diff in the hopes that this would help ALSX locking.
LOG:

1649 Back to low noise but CW injections were not running. Dave and EJ had to figure out the issue and fix it before getting back into Obs
1735 Observing
1811 Lock loss
- Took some time for Sheila to go out to ISCT1 and adjust the ASL Diff path in an attempt to help us ALS locking.
2011 Observing

Start Time	System	Name	Location	Lazer_Haz	Task	Time End
16:54	SAF	Laser SAFE	LVEA	YES	LVEA is SAFE	18:22
18:15	SAF	Sheila	LVEA	n->YES	LVEA laser transition to HAZARD	18:47
18:15	PEM	Robert	LVEA	-	Settup VP	19:09
18:16	ISC	Sheila	LVEA	yes	ISCT1 alignment	19:09
18:26	OPS	RyanC	Mech room	N	TCS CO2 chillers FAMIS	18:41
18:50	VAC	Janos	Arms	n	CP checks	19:32
19:09	FAC	Kim	H2	N	Tech clean	19:25
19:33	PEM	Robert	LVEA	yes	Setting up injections for tomorrow	19:51
19:34	SAF	Laser Haz	LVEA	YES	LVEA is laser HAZARD!!!	06:13
20:39	OPS	Corey	Optics lab	N	Look for parts	21:04