I've got confused
1) Are these the DC responses of the coils? If that is true, we need to specify the resonant frequency of each suspension to get the AC response.
2) Are these the AC responses well above the resonant freqs? In that case, The responses should be x.xxx / f^2 [m/counts]
The open loop transfer functions of the Michelson locking have been measured.
The purpose of this excise is to calibrate the coil-magnet actuators on BS and ITMs.
The estimated actuation coefficients are :
BS = 3.69e-08 [m/counts]
ITMX = 8.89e-09 [m/counts]
ITMY = 9.22e-09 [m/counts]