K.Tanaka C.Hirose

This work was on 17th-18th and 19th-20th.
For measure WFS-offset, we need to set alignment like center of DCQPD on TMSY.
We installed ASC DCQPDs of TMSY to IY and EY for this purpose.

• First step we did center on DCQPDs after initial alignment.(klog22938)

• We measured sensing matrix.
  #ITMY_P, ITMY_Y, ETMY_P, ETMY_Y
  DC QPD1=[0.0334647, -0.0385575, -0.131931, -0.120568]
  DC QPD2=[0.0376037, 0.1278, -0.104595, 0.013737]

• We set sensor for IY, EY using TMSY DCQPDs.
  The matrix for making the sensor is designed to come to a ratio of 1 to the oprev signal.
• We made filter on DC3 and DC4 and measured of Open loop transfer fanction.
• We set about 0.1Hz UGF. When we measure offset of WFS, we turn on this loop in first step.
  After cabity axis of frequency DCside is stable, we do offload IY, EY angle of OPLEV and turn off this loop and turn on oplev DAMP filter.
• If you used this filter, please turn on/off those VIS channels on ITMY and ETMY. (Those channels is following the picture.)
• Sensing matrix : /user/Commissioning/data/ASC/TMSY/PLANT/2022117/TMSY_PYcoupling_check_{ITMY,ETMY}_{PIT,YAW}.xml
  Sensor checked : /user/Commissioning/data/ASC/TMSY/PLANT/2022117/{DC3,DC4}_seisng_check_{ITMY,ETMY}_{PIT,YAW}.xml
  PLANT : /user/Commissioning/data/ASC/TMSY/PLANT/2022117/PLANT_{DC3,DC4}_TMSY_{ITMY,ETMY}_{PIT,YAW}.xml
  OLTF : /user/Commissioning/data/ASC/TMSY/OLTF/20221120/OLTF_{DC3,DC4}_{PIT,YAW}.xml