aLIGO LHO Logbook

H1 General

camilla.compton@LIGO.ORG - posted 00:02, Friday 07 July 2023 (71128)

OPS Evening Shift Summary

TITLE: 07/07 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 142Mpc
SHIFT SUMMARY: Lockloss after O4 lock record of 46h25. Reacquisition was all automatic apart from ISC_LOCK edit and violin damping. Handing off to Ryan C
LOG:

Lockloss @ 04:01 UTC after 46h25 in NLN, 1372737707. alog71126
- This lockloss rung up the compleatly damped violins again, 71063
- Had to make slight edit to ISC_LOCK after it went into error from the new popair checker, alog 71127
- Turned up EY01 and EY05 as they were damping well and I was impatient, now they are <4 I've returned to nominal settings.
- Waited 1h25m in OMC_WHITENING.
NLN and Observing @ 06:24UTC

Start Time	System	Name	Location	Lazer_Haz	Task	Time End
23:01	CDS	Dave B	H2	N	Restart H1 EDC connections. 71120	00:00
23:31	PCAL	Tony, Oli	PCAL Lab	Local	PCAL setup	00:26
23:47	VAC	Gerardo	MY	N	Working on VAC lines	00:55
00:04	CDS	Dave	Remote	N	CW injections restart (takes IFO out of observing) 71122	00:09
00:09	COMM	Jenne	CR	N	TOO OAF changes 71124	00:11