aLIGO LHO Logbook

OPS Thursday Day shift summary

TITLE: 09/24 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Corrective Maintenance
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY: DRMI commissioning continued, more GV20 investigations, and SQZer alignment work. Some SEI model issues at the end of the shift.
LOG:

Start Time	System	Name	Location	Lazer_Haz	Task	Time End
14:29	FAC	Chris, Randy, Eric	EndX	N	Scaffold building for GV20	17:45
16:15	FAC	Kim	Optics lab, VAC prep	N	Tech clean	16:32
16:19	EE	Fil	LVEA, by H2 PSL	N	3IFO dewpoint sensors	18:02
16:37	VAC	Travis, Jordan	EndX	N	Check out GV scaffolding and pump down	17:29
16:44	PEM	Robert, Miranda	LVEA	N	GV1 and GV2 accelerometer checks/pondering	17:04
17:29	VAC	Travis, Jordan, Robert	LVEA	N	Open GV1 and GV2	18:03
18:08	SQZ	Sheila, RyanS	FCES	Y	SQZT8 table checks	19:04
18:41	IOO	Jennie	CER, LVEA	N	Take pictures in CER, grab voltmeter from LVEA	18:52
18:50	FAC	Tyler	EndX	N	Scaffold inspection	19:50
20:06	FAC	Randy	YARM	N	MidY to corner beamtube encl repair	23:46
20:36	EE	Fil	CER	N	Power cycle COMTROL eth to serial box for 3IFO sensors	22:06
21:00	VAC	Gerardo, Jordan	LVEA	N	Feeler gauges	21:29
21:26	VAC	Travis Jordan Gerardo	EX	N	Working at height at EX in harnesses.	23:11
21:49	Safe Tea	Richard	EX	N	Checking scafolding for broken folk	23:01
21:52	SQZ	Sheila & Ryan S	HAM Shaq	YES	Beam profiling and aligning.	22:31
21:57	PEM	Robert, Miranda, Alex	EX	N	Installing Accelerometers GV20	23:26
22:19	CAL	Tony, Caroline	PCAL lab	LOCAL	Measurements of/with new laser	Ongoing
23:00	SPI	Jennie, Marc	LVEA	N	Unplug cables at racks and make continuity measurements	23:10

I started the morning with an modified manual alignment following along the lines of what was done the other day alog91911.

PRX, adjusting PRM to maximize AS_A
MICH_DARK adjusting the BS to minimize AS_A and the camera spot
SR2_ALIGN looked well converged
SRY adjusting SRM, I touched SR2 by less than a microradian to further maximize AS_A

GVs 1 & 2 were opened today, I did a quick trend of the ITMs oplevs and top mass pointing (Y1 cursors are before the GV closed 1473628152 to be specific, Y2 are the current values at the time I looked), its pretty close.

17:03 UTC ETMX ISI ST1&2 WD trip from Scaffolding work
17:41 UTC GV1 soft close, 17:46 UTC GV is open
17:53 UTC GV2 soft close, 17:58 UTC GV2 is open
21:28 UTC the SEI_EX model froze, EJ restarted it but DK and DAQ errors returned
21:38 UTC ETMX HEPI and ISI ST1&2 WD trip, if we tried to untrip HEPI it would retrip
23:13 UTC EJ restarted the model again