• KAGRA
• Subgroups
• MIF
• AngularSensing

Angular Sensing and Control (2022)

WFS ports

REFL

• Optical layout

  • https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9238

• REFL PZT1, REFL PZT2, and REFL_WFS picomotors are available to center the beam on REFL_WFS1 and REFL_WFS2

POP

• Optical layout

  • https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9623

• POP-S and POP-P cameras are available
• POP PZT1, POP PZT2, and POP_WFS picomotors are available to center the beam on POP_WFS1 and POP_WFS2

AS

• AS and OMC_TRANS CCDs are available
• OMC_REFL CCD hasn't been connected

DC QPD ports

TMSY

• TMSY QPD1 and 2 are placed on the TMSY in-air table, with 90 degrees separated in Gouy phase
• No PIT-YAW coupling

  • https://klog.icrr.u-tokyo.ac.jp/osl/?r=22575

TMSX

WFS Commissioning

WFS DC centering

• Open the REFL shutter for REFL WFS
• Beam spots on the quadrant diodes must be centered (DC centering)
  • PZTs and picomotors are available

Single Y arm

• Sensing matrix

  • https://klog.icrr.u-tokyo.ac.jp/osl/?r=22578

• Input matrix

  • https://klog.icrr.u-tokyo.ac.jp/osl/?r=22602

• Loops closed

  • https://klog.icrr.u-tokyo.ac.jp/osl/?r=22671

  • DSOFT is IY, DHARD is EY
• Loops or noise haven't been characterized

Single X arm

PRMI

PRFPMI

DRFPMI