Summary of Suspension Configurations Yuta Michimura Department of Physics, University of Tokyo March 18, 2015.

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Presentation transcript:

Summary of Suspension Configurations Yuta Michimura Department of Physics, University of Tokyo March 18, 2015

For bKAGRA ITM, ETM Type-A Suspension 2 Top Filer Inverted Pendulum Standard Filer Bottom Filer Intermediate Mass Test Mass Geophone (H) x3 LVDT + Act (H) x3 LVDT + Act (V) x1 OSEM x6 Platform LVDT + Act (V) x1 Coil-magnet (H) x4 Oplev x1

For BS, SRM, SR2, SR3 Type-B Suspension 3 Inverted Pendulum Top Filer Standard Filer Bottom Filer Intermediate Mass Test Mass LVDT + Act (V) x1 OSEM x6 LVDT + Act (V) x1 OSEM (H) x4 Oplev x1 Geophone (H) x3 LVDT + Act (H) x3 LVDT + Act (V) x1

Type-Bp Suspension 4 For PRM, PR2, PR3 Standard Filer Bottom Filer Intermediate Mass Test Mass LVDT + Act (V) x1 OSEM x6 LVDT + Act (V) x1 OSEM (H) x4 Oplev x1

Fixed Type-Bp Suspension 5 For iKAGRA ITM, ETM Bottom Filer Intermediate Mass Test Mass OSEM x6 LVDT + Act (V) x1 OSEM (H) x4 Oplev x1

Type-C Suspension 6 For MCi, MCo, MCe, and other input output optics Intermediate Mass Test Mass Stack Coil-magnet (H) x4 Oplev x1 Picomotor (V) x2

References 7 See wiki page AssemblyStatus for the assembly status of suspensionsAssemblyStatus See JGW-T for sensors and actuators arrangement of Type-A suspensionJGW-T Suspension performance below