Displaying report 1-1 of 1.
Reports until 22:22, Wednesday 24 July 2024
H1 ISC
sheila.dwyer@LIGO.ORG - posted 22:22, Wednesday 24 July 2024 (79308)
HAM5 alignment laser set up complete

Jason, Jenne, Camilla, Keita, Francisco, Naoki, Sheila. (Please see Francisco's alog for more details 79300)

Today we got the alignment laser set up and the sqz beam checks done in a way that we think is good enough to move forward with removal of the KTP tomorow.  There are more detailed notes in other alog drafts, and photos coming. 

We found this morning that the beams were not where they were left last night on the OM1 + retro reflection irises.  We decided that this was likely due to the wobbly mount with sticking knobs that the steering mirror was in, this would change the alignment from being touched, and sometimes turning the knob did not adjust the alignment because the knob wasn't engaged.  We decided to swap this mount out which took some time, but after that things went smoothly, and with about 3 iterations we were able to center the beam on SR2.  We then did a quick check of the squeezer beam, which goes through the OFI and returns to OM1.  We got some cool photos of showing a hole in the middle of the beam; we intentionally set it's alignment to go through the most recent crater. 

We are ready to go to laser safe, and the door crew plans to take HAM6 door off in the morning.  After that we will remove the KTP assembly.

Displaying report 1-1 of 1.