The MICH actuation with PRM/BS was investigated again.
(ITMX -1 / ITMY +1) is equivalent to (PRM -0.267 and BS +0.50).
- PRMIsb was locked with REFL33I&AS55Q.
- Using the locking module in the LSC model, actuate ITMX (-1) and ITMY (+1) at 580.1Hz. Note that the notch filters in the MICH/PRCL servos were on.
- Look at the peak in the AS55Q spectrum. Tune the BS element in the output matrix of the lock-in to minimize the peak height.
=> The peak was minimized at BS = -0.50.
- Look at the peak in the REFL33I spectrum. Tune the PRM element in the output matrix of the lock-in to minimize the peak height.
=> The peak was minimized at PRM = +0.267
- These measurement leads to the conclusion mentioned above. |