MIF

Design

* KAGRA Main Interferometer Design Document PDF

VIS introduction

General introduction for vibration isolation

• Thesis of M. Blom PDF : General introduction for modern VIS

• K. Arai's master's thesis PDF : A very good introduction for Type-C style suspension (in Japanese)

Specific topics

• Monolithic Geometric Anti-Spring Blade by G. Cella arXiv: Theory of GAS filter

• Electronics Setup and testing LIGO by B. Shapiro (about medm screens, dataviewer, diaggui, foton, transfer functions) PDF

• Quality factor PDF

• Strip Tool manuallink

• Wire-mass system considering violin modes PDF

• Pendulum with finite mass system N. Mio PDF

• Pendulum with moving support G. Gonzalez PendulumWithMovingSupport_G_Gonzalez.pdf

• LVDT signal conditioning: PDF

• DFT/FFT Transforms and Applications: Link

• Diagnostics Test Software: Link

Others vibration isolation thesis

• Modeling and simulation of seismic attenuation system (SAS) for Virgo PDF

KAGRA VIS documents

• PhD thesis of T. Sekiguchi for Type-B suspension Link

• PhD thesis of A. Takamori for Low frequency seismic isolationPDF

KAGRA VIS Operations Manual

Lots of info on operating the suspensions, including interface software like MEDM, Simulink etc.

• KAGRA/Subgroups/VIS/OpsManual

VIS Lectures (Enzo)

• Lecture 1 PDF : VIS Suspensions and digital system.

• Lecture 2 PDF : GAS filters and LVDTs.

• Lecture 3 PDF : Concepts of DSP, TF interpretation and use of DTT.