J. Kissel, N. Kijbunchoo

We're on level three distraction from what we believe is our potentially main issue/problem:
- (Level 1) We started hoping to return to nominal low noise ASAP to test whether the ETMY PUM/L2 stage coil driver swap has improved the recent plague of glitches, and/or changed that stage's coil balancing, length-to-pitch plant, or actuation strength.
- (Level 2) We then had trouble with ALS losing lock constantly before finding IR. So, we spent a few hours just going through ALS locking steps one at a time in hopes to find a specific problem. This go us no where, and as per typical, we got lucky once and made it past all the way up through COIL_DRIVERS after DC_READOUT and POWER UP. We saw an oscillation in IFO signals eventually lead to a lock loss.
- After failing again at ALS, we decided it must be initial alignment (given evidence of low green power from the X Arm).
- (Level 3) Once finished with the first round of initial alignment (which took particularly long because SR2 was in the wrong spot), we found the Y-arm totally hosed in alignment.

Now, Nutsinee and I are just chasing our tails with the Y arm green locking, likely because of the 2 [deg] C temperature swing of the YVEA after the chiller failure.

I'm going home, Nutsinee's just going to wait it out until the temperature returns to normal.