sheila.dwyer@LIGO.ORG - posted 05:33, Monday 24 June 2024 - last comment - 10:43, Monday 24 June 2024(78612)
10 minutes of no sqz time before OM2 heating test
10 minutes of no squeezing time started at 12:18 UTC June 24th, back to squeezing at ~12:29. This is so we have a comparison without squeezing before OM2 starts heating up 78573.
Unmonitored the OM2 heater channel when the script changed it, now we are back in observing while OM2 heats up.
Thermistor 2 has thremalized completely, but thermistor 1 still shows some thremal transient settling. Unlike what we've seen in the past, 71087, the optical gain did not change with this TSAMS change.
There is coherence with DHARD Y, and SRCL coherence has increased as expected if the DARM offset has changed.
Here are some jitter injections, looking at the coupling change between OM2 cold and hot. The pitch jitter coupling (without cleaning) seems worse with OM2 hot, which is different than our previous OM2 tests.