[Betsy, Keita, Camilla, Richard M., Elenna]
After the power outage, we wanted to get some confirmation of PZT pointing out of the PSL. Betsy, Keita and Camilla went in the cleanroom with the IR viewer and indicator cards and took the covers off the IMC refl and trans viewports on HAM2. Keita found the beam out of the IMC REFL viewport, and I adjusted the IMC PZT in pitch and yaw under direction from Keita. I accidentally moved the pitch slider a bit at the beginning due to user error. Then, we took large steps of 1000 or 2000 counts to move the offsets in pitch and yaw.
Start values: pitch: 22721, yaw: 5488
End values: pitch: 21192, yaw: 6488
Then, Betsy found the beam out of the IMC TRANS viewport and Richard marked the beam spot approximately on the outside of the cleanroom curtain with a red sharpie. This is super rough but gives us a general location of the beam. We think this is a good enough pointing recovery to proceed with vent activities.
During this work, PSL waveplate rotetor was set to 200mW and then de-energized. I haven't re-energized as we don't need higher power for a long time.
PSL laser pipe was temporarily opened for this task and was closed after.
Attached video shows the flashing of the beam in MC TRANS path. The alignment from the PSL through the IMC is not crazy. Any further refinement should be done after we start pumping down the corner before we install HAM1 optics.
Accepting PZT offsets in h1ascimc SAFE.snap table.