DRMI has been locked using the same RFPD selection as the old days (i.e. AS55_I, AS55_Q and REFL_I).(#4760)
But remember : this is just a beginning of several measurements and tests to characterize the central part.
Here is a list of the measurements and actions :
- 3f locking related
+ Listing up the necessary RFPDs and their installations.
+ Calibration of the SRM actuator => this is necessary to convert the sensing matrix into unit of [counts/m] or [W/m].
+ Measurement of the sensing matrix => check the performance of 3f signals. Also diagonalization of the LSC sensing matrix
+ Diagonalization of the output matrix.
+ Noise characterization of 3f PDs => confirm the noise are low enough to keep the lock of the central part
- Power-recycling gain issue related (#5541)
+ Estimation of the mode matching efficiency => maybe we can use power-recycled ITMs to estimate it (?)
+ Implementation of auto alignment servos and scripts for MICH, PRCL and SRCL. => integrate it to the existing ASS model
+ Search for a possible loss factor