When I took over from Jeff this afternoon, he had successfully damped down bounce and roll modes on various optics, so I was able to proceed with locking the IFO at 17:15. About 45 minutes after that, the DARM got glitchy and we noticed that the wind traces on the wall were all trending up. After 45 minutes we lost lock and I haven't been able to relock since. Winds seem to be slowly winding down, but it's not totally calm yet. Pretty consistenly the IFO will get o CARM reduction, then lose lock on REFL_TRANS. Attached plots show trends for the last 6 hours at EX and EY. We lost lock pretty much right as winds topped out at EY.
Winds have settled down. IFO is locked on LSC_FF, just 20 minutes after LLO went down. Oh, well, more data points about LHO locking and winds. I attach the last 7 hours of windspeeds for EX and EY, we were able to lock at roughly the beginning and at the end. So, roughly 0:00:00 UTC 6/11 and again at 5:45 UTC, and not betwixt the two. DARM is still kind of glitchy, but it seems to be holding up.
