oli.patane@LIGO.ORG - posted 10:54, Wednesday 25 June 2025 - last comment - 13:47, Wednesday 25 June 2025(85327)
Lockloss
Lockloss during commissioning at 2025-06-25 17:52UTC after over 5.5 hours Locked. Cause not known, but probably not commissioning related.
18:48 Back to NOMINAL_LOW_NOISE
Within the same ~15 seconds of the lockloss, we turned the CO2 powers down form 1.7W each to 0.9W each. In the hope of doing the thermalization tests we tried last week 85238.
We checked the lockloss today and LSC channels at the time last week we turned the CO2s down and see no glitches corresponding with the CO2 waveplate (out of vac) change, we think the lockloss was unrelated.