We haven't aligned the OMC ASC for while so today I did Gabriele's method where we inject lines in the four OMC ASC loops at different frequencies and then demodulate the 410 Hz PCAL line at these frequencies and then at 410Hz to look at which combination of offsets improves our optical gain the most.

The plot of BLRMS of the DCPD_SUM_OUT at 410 Hz vs. QPD offset is shown below.

The start and end times used were 17:22:40 UTC and 17:42:40 UTC.

The detector was in NLN s but squeezing was turned off.

The code is at /ligo/home/jennifer.wright/git/2025/OMC_Alignment/OMC_Alignment_2025_01_16.ipynb.

Usually the start and end times the plots use contain some times without the OMC ASC lines but that was not possivle here as we went to NLN_CAL_MEAS before I had turned off the lines.

Looking at the plot, I think we need to change

H1:ASC-OMC_A_PIT_OFFSET by -0.1

H1:ASC-OMC_A_YAW_OFFSET by 0.075

H1:ASC-OMC_A_PIT_OFFSET by -0.075

H1:ASC-OMC_A_YAW_OFFSET by 0.08

or something close to these.