J. Kissel, J. Oberling, T. Shaffer, J. Driggers, E. Merilh

We were all excited for calibration measurements, and holding off from everything because of the GRB alert ..... and the TCSX laser power kicked off.
Investigations led to the smoking gun: Spare TCS chiller was plugged in to an outlet the same circuit breaker as TSCX chiller during this morning. Spare chiller tripped the circuit a bit later, taking TCSX chiller and thus the laser out with it (because the laser watchdog tripped from having no chiller).
More details to come.

Interestingly, though, we saw a few interferometer build things change during this inadvertent TCS text before we lost lock. POP18 build-up dropped, but we gained about 10 Hz on the cavity pole (no change in optical gain).