Kiwamu, Sheila
We locked the X arm. We started with Keita's alingment, adjusted the ITM a little bit until we saw some fringing. At the end station we adjusted the demod phase watching Imon (photo of switch positions on phase shifter is attached), then tweaked the ITM alignment again. We tried moving the ETM around but found that Keita's alignment was pretty much the best we could find. This means in the end we had
| ITM | ETM | |
| PIT | 86.0 | 342 |
| YAW | -64.0 | -37.0 |
Once we had the PLL locked we locked the PDH easily (In 1 pol negative, -4dB in1 gain, common comp and the first boost on, and the slow option on (meaning no slow feedback). REFL PD B dropped from 18000 counts unlocked to around 16000 counts when we were locked on the carrier. We measured a transfer function (last attachment), the ugf was roughly 8kHz.
Last we checked ISCT1 for a beam, but didn't find anything there.
