J. Kissel

I came in ~10 minutes ago, and found that the IFO had just finished getting to low noise, in the LSC_FF state. ITMX's highest vertical (bounce) mode and the 4th harmonic (2.5 [kHz]) of somebody's violin mode are very rung up, but the IFO appears to be stable(-ish). I briefly turned on the undisturbed bit, but when I noticed that DMT wasn't computing the inspiral range, I found there was a state above LSC_FF, "NOISE_TUNINGS" so I've turned off the undisturbed bit, changed the nominal state to NOISE_TUNINGS, and went for it (since all it appeared to do was turn on a SRCL offset). This broke the lock after a minute or so. Hurumph.

I've now changed the nominal state back to LSC_FF, and I'm gunna leave it there is time. Once it gets back up (hopefully), I'll reengage the undisturbed bit.