I summarize the calibration for the OPLEVs.
For the conversion from counts to Volts, I used the following value: 1 V = 1638 counts -> cal = 6.105e-4 [V/count].
Note that for BS and PR we use TAMA PSD and no lens for shift/tilt decoupling.
Yaw: 0.24+/-0.03 [mrad/V] = 0.146+/-0.02 [urad/count]
Pitch: 0.33+/-0.03 [mrad/V] = 0.21+/-0.02 [urad/count]
NB: for geometrical reasons pitch is multiplied by a factor sqrt(2) (see attachment in entry 276)
Yaw: 0.37+/-0.03 [mrad/V] = 0.25+/-0.02 [urad/count]
Pitch: 0.37+/-0.03 [mrad/V] = 0.25+/-0.02 [urad/count]
NB: Since in this case the incident angle is almost normal the factor sqrt(2) can be neglected.
Yaw: 0.038 [mrad/V] = 0.027 [urad/count]
Pitch: 0.062 [mrad/V] = 0.038 [urad/count]
NB: We considered a factor 100 coming from SR560 amplifiers
Yaw: 0.030 [mrad/V] = 0.018 [urad/count]
Pitch: 0.043 [mrad/V] = 0.026 [urad/count]
NB: We considered a factor 100 coming from SR560 amplifiers
It would be good to implement real time calibration for OPLEV channels.