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Fri Sep 30 06:25:20 2011, kiwamu, Update, LSC, Calbiration of BS, ITMs and PRM actuators
Sat Oct 8 00:44:42 2011, kiwamu, Update, LSC, calibration of SRM actuator
Sat Oct 8 00:44:42 2011
In reply to:
calibration of SRM actuator
The AC response of the SRM actuator has been calibrated.
(Summary of the calibration results)
BS = 2.190e-08 / f
ITMX = 4.913e-09 / f
ITMY = 4.832e-09 / f
PRM = 2.022e-08 / f
SRM = 2.477e-08 / f
( NEW ! )
The same technique as I reported some times ago (
) were used.
The Signal-Recycled ITMY was locked for measuring the actuator response.
Since the ITMY actuator had been already calibrated, first the sensor was calibrated into [counts/m] by exciting the ITMY actuator and then calibrated the SRM actuator with swept sine measurement.
- - notes to myself
SRCL GAIN = 2.2
Sensor = REFL11_I
Demod. phase = 40 deg
Resonant condition = Carrier resonant
Gain in WF = 0 dB
The AC responses of the BS, ITMs and PRM actuators have been calibrated.