J. Kissel

I've installed the refined alignment slider gains from 14405, and subsequently measured the optical lever calibration gain refinement for H1SUSETMX and H1SUSETMY using the method described in LHO aLOGs 14387 and 14312. I attach fits to the data points. The newly refined oplev calibration gains are 
EX P = 81.2  [urad/ct]
   Y = 115.2 [urad/ct]
EY P = 77.94 [urad/ct]
   Y = 53.55 [urad/ct]
Further, I've installed the already-computed, refined optical lever calibration gains for H1SUSBS from LHO aLOG 14387, compensated for the change in the optical lever damping loops, and confirmed the loop is still functional.

I've captured new safe.snaps for all three suspensions to ensure these values stick.

As such, all core-optic, BSC suspensions have optical lever gains refined precisely to a few hundredths of a percent (i.e. the separation of the baffle diodes, ~30 [cm] over the length of the arms 4 [km].)

Details

The ETMX P fitted correction factor is:
0.8805 ["urad"/urad]
The new ETMX oplev P calibration should be:
71.5 ["urad"/ct] * 1.136 [urad/"urad"] = 81.2 [urad/ct]
The ETMX Y fitted correction factor is:
1.058 ["urad"/urad]
The new ETMX oplev Y calibration should be:
121.8 ["urad"/ct] * 0.9455 [urad/"urad"] = 115.2 [urad/ct]
The ETMY P fitted correction factor is:
1.225 ["urad"/urad]
The new ETMY oplev P calibration should be:
95.5 ["urad"/ct] * 0.8161 [urad/"urad"] = 77.94 [urad/ct]
The ETMY Y fitted correction factor is:
1.295 ["urad"/urad]
The new ETMY oplev Y calibration should be:
69.33 ["urad"/ct] * 0.7724 [urad/"urad"] = 53.55 [urad/ct]

The raw measurement data and script to process it can be found here:

/ligo/home/jeffrey.kissel/2014-10-22/
calibratebsoplev_20141021.m
2014-10-22_H1SUSETMX_OplevCalibration_P_Offsets_10sec_avg.txt
2014-10-22_H1SUSETMX_OplevCalibration_Y_Offsets_10sec_avg.txt
2014-10-22_H1SUSETMY_OplevCalibration_P_Offsets_10sec_avg.txt
2014-10-22_H1SUSETMY_OplevCalibration_Y_Offsets_10sec_avg.txt