aLIGO LHO Logbook

LHO General

ryan.short@LIGO.ORG - posted 16:00, Friday 21 April 2023 (68891)

Ops Day Shift Summary

TITLE: 04/21 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Commissioning
SHIFT SUMMARY: Jim has a new ISI filter for ETMY to mitigate the motion at EY from the wind fence work; we were able to leave it on all day successfully.

Lockloss @ 16:06 from accidentally turning on PRCL UGF servo incorrectly

Lock Acq #1:

Relocking via PRMI
Paused during OMC_WHITENING to damp violin modes
NLN @ 18:26
Lockloss @ 20:58 from attempting to switch to new PRM offloading in-lock (it did not work)

Lock Acq #2:

Turned nominal sensor correction back on at EY as wind fence work had finished
Adjusted both TMSX and ETMY alignment to lock ALS
IR DIFF found by hand
Again paused during OMC_WHITENING to damp violin modes
NLN @ 23:01

LOG:

Start Time	System	Name	Location	Lazer_Haz	Task	Time End
15:15	FAC	Karen	Opt/Vac Labs	-	Technical cleaning	15:28
15:15	FAC	Randy, Mitchell	EY	-	Wind fence work (Tyler joining @15:51)	18:54
15:30	ISC	Elenna	CR	-	Freq noise inj, CARM meas, DARM spring, CO2 step	16:13
15:47	EE	Fil	MX	-	Vacuum pump wiring	17:11
16:18	SUS	Rahull	Remote	-	SRM	17:04
16:39	VAC	Travis	EY	-	Install wheels on dolly	17:39
17:42	SQZ	Nutsinee	LVEA - SQZ	-	Picking up equipment	17:46
17:48	FAC	Karen, Cindi	FCES	-	Technical cleaning	18:31
19:58	VAC	Travis	MX	-	Hepta pump work	20:26
20:01	FAC	Randy, Mitchell, Tyler	EY	-	Wind fence work	21:07