J. Kissel, T. Sadecki, C. Whittle

We found the IFO Up and running this morning when we got in, and it had be up for the last 8 hours. It was stagnant at 2 [W] input power, in DC READOUT TRANSITION. However, I noticed immediately that just about all IFO signals were reporting huge slow oscillations. I attached a screenshot of one of Sheila's strip tools that shows the oscillation was present in the ASC signals for at least 80 minutes, then a trend of the entire lock stretch revealed that there was a power oscillation in the Y arm at similar frequencies. As of writing this aLOG we've lost lock; unclear if it was because of Chris's testing out of ITM charge measurements, or if the oscillation just finally got out of control.

I won't speculate what this might have been, but I wanna capture it for the record and talk with the vanguard in case it has something to do with any of the new SRM alignment scheme (i.e. LHO aLOG 28538).