aLIGO LHO Logbook

LHO General

ryan.short@LIGO.ORG - posted 16:03, Tuesday 19 December 2023 (74908)

Ops Day Shift Summary

TITLE: 12/19 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 156Mpc
INCOMING OPERATOR: Oli
SHIFT SUMMARY: Average maintenance day that ran just a bit long and a straightforward locking process.

H1 had already unlocked prior to shift start from commissioning activities - alog74887
19:02 ETMX HEPI and ISI (both stages) WDs tripped; no suspected motion
- Tried untripping HEPI, immediately tripped again
- HEPI pump pressure had dropped to 0psi; Jim going to EX to reset pump controller
20:15 ETMY ISI (both stages) WDs tripped from power supply swap - alog74898
20:41 Maintenance activities finished, starting initial alignment
21:37 Alignment finished, starting lock acquisition
22:18 Reached OMC_WHITENING
- ETMX violins are high, likely from multiple ISI/HEPI trips, waiting here to damp
22:28 Reached NLN, violins low enough
22:35 Started observing after wrangling some SDFs

LOG:

Start Time	System	Name	Location	Lazer_Haz	Task	Time End
22:41	SQZ	Nutsinee	Optics Lab	Local		Ongoing
15:05	cal	Louis	CR	N	testing new DARM loop config	16:00
15:48	FAC	Randy	Outside/ High bay	N	Driving Forklift	16:08
15:59	FAC	Karen	Optics Lab	n	Technical Cleaning	16:14
16:32	IOO	Ryan S	CR	-	Center IMC WFS	16:47
16:00	FAC	Kim	LVEA	N	Technical cleaning	17:32
16:14	FAC	Karen	LVEA	-	Technical cleaning	17:33
16:04	FAC	Mitchell, Randy	LVEA	-	HAM3 cleanroom	17:39
16:19	FAC	Cindi	FCES	-	Technical cleaning	17:40
17:25	IAS	Jason, Randy	LVEA	-	FARO craning	17:44
17:35	EE	Marc	EX	-	Checking power supplies	17:57
17:49	SAF	Camilla, Jason	LVEA	YES	Transition to HAZARD	17:59
16:38	VAC	Travis	LVEA	-	HAM5 turbopump line work	18:15
17:59	EE	Marc	CER	-	Checking power supplies	18:17
18:17	EE	Marc	EY	-	Checking power supplies	18:43
18:29	FAC	Randy	LVEA	YES		18:50
18:09	OPS	Mitchell	EX, EY	-	FAMIS checks	18:51
18:12	FAC	Karen	EY	-	Technical cleaning	18:58
18:46	EE	Marc	LVEA	YES	Talk to Camilla	19:06
18:13	EE	Fil	LVEA	YES	Connect temp sensor near BSC2	19:07
18:11	FAC	Tyler, FM	EY	-	Fire safety checks	19:15
19:21	IAS	Tyler	LVEA	YES	Grab parts for FARO	19:27
15:58	S&K elect	Ken	EX	-		19:37
16:43	VAC	Janos	EX, MX	-	Hepta pump checks	19:56
19:07	EE	Marc, Fil	EY	-	Check TCS power supply	19:57
19:17	FAC	Chris	All Buildings	-	Safety equipment checks	20:00
16:23	VAC	Gerardo	LVEA	-	Check on HAM2 AIP	20:01
18:41	SQZ	Daniel	LVEA	YES	SQZ parts near HAM6	20:07
20:16	SQZ	Sheila, Naoki	LVEA	YES	Turning sidebands back on	20:18
16:48	SQZ	Vicky	Remote	-	SQZ/OMC scans	20:26
19:43	SEI	Jim	EX	-	Recover HEPI pump station	20:26
20:04	EE	Fil, Marc	EY	-	Replace power supply	20:38
17:59	TCS	Camilla, Jason	LVEA	YES	CO2X beam profiling	20:59
18:00	SAF	LASER HAZARD	LVEA	YES	LVEA IS LASER HAZARD	21:00
18:28	SQZ	Nutsinee	Optics Lab	Local		21:02
21:15	SAF	Camilla	LVEA	YES	Transition to SAFE	21:38