TJ, Camilla, Sheila, Elenna

We went out to ISCT1 to realign all ALS paths. The baffle align scripts were successfully run for the ITMs and TMS. I moved the BS to improve the MICH alignment. We then misaligned the ITMs and went to the table.

TJ and I were able to find both green beams and the PSL red beam coming in on the periscopes. The PSL ALS beam was mostly hitting the beamdump that Sheila and Betsy had previously put on the path, but was slightly off. TJ moved the upper periscope mirror to center the green beams and the PSL beam. We got everything pretty well placed on the periscope, and then TJ improved the lower periscope green mirror to get each beam aligned onto the prism.

Sheila and I were able to get the beam aligned for the ALS X path and saw it on the camera. We moved the diode around until we got pretty good alignment. Then, I adjusted ETMX by hand to improve both the diode flashes and the camera image. At some point I hit a wall and found that moving TMSX also helped the alignment considerably. Eventually everything was well-aligned enough that I could let the ALSX guardian run through ETM TMS WFS offloaded.

I tried doing the input align with the X arm, but couldn't get LSC TR norm flashes good enough. I had to move PR2 a lot in yaw. I also tried some moves with IM4. Gave up for the day.

Meanwhile, TJ, Camilla, and Sheila touched up the ALS Y path and the PSL ALS path. The Y arm diode and camera are now well enough aligned that we could run the ALS Y guardian.

The PSL path needs more work, and currently the beam is dumped just before the SHG.