K Tanaka, C Hirose

The following measurements were taken to install DC centering control for IMMT1 and IMMT2 using signals received from the POP forward QPDs,

＊We measured Sensing matrix of IMMT1, IMMT2 by POP-FORWARD QPDs (20220426_SENSMAT_IMMT{1,2}_PIT.png, 20220426_SENSMAT_IMMT1_PIT.png, 20220426_SENSMAT_IMMT1_2_YAW.png)At this time, I turned off the compensating filter for each QPD since the degrees of freedom are swung at lower frequencies. I also turned off the ADS for IMMT1 and PR2.  -->./users/Commisioning/data/ASC/POP_FOR/Sensmat/20220426/TF_POP_FORWARD_QPD_IMMT1{1,2}_{PIT,YAW}.xml

＊We inserted the sensing matrix values into DOF3 and DOF4. (Sensmat_POP_FOR.png) and changed the MEDM screen (ASC_CUST_INMTRX_{P, Y}_DC.adl) for them. 

＊After we checked that the sensors looking at each degree of freedom ( {IMMT1, IMMT2 }_{PIT ,YAW }) were working properly.(Sensor_DOF3_DOF4.png)-->./users/Commisioning/data/ASC/POP_FOR/Sensmat/20220426/Sensmat_POP_FORWARD_QPD_IMMT1{1,2}_{PIT,YAW}.xml

＊We measured the PLANT transfer function using the sensor we made. (PLANT_POPFOR.png) At this time we turned off DC control for IMMT1 oplev. --> ./users/Commisioning/data/ASC/POP_FOR/PLANT/20220426/PLANT_IMMT{1,2}_{DOF3,4}_{PIT,YAW}.xml