Reports until 17:28, Friday 12 September 2025
LHO General
ryan.short@LIGO.ORG - posted 17:28, Friday 12 September 2025 (86891)
Ops Day Shift Summary

TITLE: 09/12 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Corrective Maintenance
INCOMING OPERATOR: Ibrahim
SHIFT SUMMARY: Been another busy day of troubleshooting following the power outage. There have been many logs entered with things people have looked into and tried (please see those for more information, as it would be impossible for me to summarize all of it here), but the gist is that we have accepted for now the apparent alignment shift through the IMC, even though this shows much higher reflected power, and reduced the amount of light on the IMC REFL WFS to keep them safe. Since then, we have been trying to relock H1 in this new configuration, but this has been so far plagued with challenges; see Elenna's alog for more on that.
LOG:

Start Time System Name Location Lazer_Haz Task Time End
15:41 FAC Randy Hi-bay N Moving boom lift outside 16:41
15:54 ISC Sheila LVEA N Plugging SR785 in for IMC measurement 16:06
16:11 VAC Richard LVEA N Checking vacuum pump 16:18
17:48 PEM TJ LVEA N Check DM by HAM6 18:18
18:44 VAC Gerardo LVEA N Replacing AIP controller on HAM6 19:05
19:42 ISC Camilla Opt Lab N Getting some bolts and power meter 20:15
19:58 ISC Sheila, Elenna LVEA LOCAL Adjusting IOT2L waveplate 20:59
21:01 ISC Elenna LVEA N Check SR785 21:37
21:37 CDS Marc MY N Finding parts 22:37