edmond.merilh@LIGO.ORG - posted 10:20, Tuesday 11 June 2019 - last comment - 08:00, Thursday 13 June 2019(49808)
OpLev Centering - Weekly FAMIS #11325
OpLev centering was done on both ETMS and ITMX. I'm experimenting with compensating the alignments of these to the degrees that they are driven by the loops during an extended NLN lock. I was able to do EX at NLN and get a good 0/0. Unlocked/Aligned I compensated EY with +2u rad in P and +4u rad in Y. ITMX was compensated with +3u rad in P and nothing in Y. Below is a shot of the positions in NLN.
Images attached to this report
Comments related to this report
So the final settings mentioned in the initial log seem to be relatively accurate. I'm curious to see if these spots move closer to center with alignment convergence.
Images attached to this comment
Looks like my compensatory alignments worked to my favor. After an 18+ hr lock all but one are reasonably well centered. EY is off but this doesn't surprise me much.
Images attached to this comment
