camilla.compton@LIGO.ORG - posted 12:20, Monday 15 September 2025 (86936)
IM4 Trans at 2W in, Before Outage comapred to Now
Comparing IM4 Trans alignment at 2W in before the power outage to now. Plot attached.
IM4 trans Pitch alignment is the same, Yaw alignment is 0.06 different. So alignment changes are minimal.
Power on IM4 trans is slightly (~3%) lower: NSUM Power on IM4 trans was 1.891 for 2.026W in (ratio 0.933), now is 1.780 for 1.974 in (ratio 0.902).
Images attached to this report
