Today I took "unbiased" OLGs of INP1 P and Y (67187). I have plot the measurements with error shading.

INP1 P has a UGF of about 0.036 Hz and phase margin of 87 deg. This UGF seems very low for the target Gabriele and I had when we redesigned this loop (69108). I think should be closer to 0.1 Hz. INP1 Y has a UGF of about 0.25 Hz with phase margin 35 deg, which is higher than I would have expected for our target. Time permitting, I will look into the design of both of these loops and see if there are any adjustments worth making.

You can find the measurement templates, exported data, and processing code in '/ligo/home/elenna.capote/DRMI_ASC/INP1'.

The templates for the these measurements are also saved in [userapps]/asc/h1/templates/INP1 as 'INP1_{P,Y}_olg_broadband_shaped.xml'.

As a reminder, INP1 controls IM4 and is sensed on a combination of REFL RF45 WFS.