Vibration Isolation System (VIS)

Subsystem Definition

  1. This subsystem makes vibration isolation for all optics used in KAGRA.
  2. Requirement of displacement of the test mass mirrors must be less than 4x10^-20m/rtHz at 10Hz. RMS motion must be less than 0.1 um as displacement and 0.1 um/s as velocity. (please note that it is old information)

Reference JGW-T1100365-v2


Design

Suspensions

Mechanics

Sensors

Actuators/Motors

Digital System

Concept?

Type-A

Pre-Isolator

Inertial Sensor

Voice coil actuator

RTModel

Actuator Design

Type-B

GAS

LVDT

Solenoid actuator?

Guardian

Requirement

Type-Bp

Magnetic damper

Photo Sensor

Picomotor

SDF

-

Type-C

Maraging wire

Optical Lever (OpLev)

Stepper Motor

BIO

-

TMS-VIS

-

Release Sensor

Fishing Rods

-

-

-

-

-

Traverser

-

-

-

-

-

PicomotorPowerControlSwitch

-

-

-

-

OSEM

-

-

-

-

Temp. Control

-

Meetings

Management

Maintainance/Diagnostics

Other subsystem interfaces

For Users

VIS Apps

Weekly VIS meeting

Schedule

Maintainance

AEL interfaces

Bug Reports

SUMCON

Extraordinary meetings

Github Projects

Acceptance Test

DGS interfaces

Trouble Shooting

ModelPlotter

Old VISMeeting

Github Repository

DGSMaintainance

CRY interface

AutoMeasurement

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SuspensionControlModeling

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Kontrol

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VIS Health Check

Links, Misic.

Documents

Wiki SEI, SUS

VIS Introduction

Log SEI, LHO, LLO, Virgo

VIS Doc. Tree 

Photos

Daily Operations

/!\ [April 28. 2020] Miyo is cleaning up the VIS wiki pages. Progress is posted here.


Old (Please arrange me)


KAGRA/Subgroups/VIS (last edited 2021-08-23 09:15:06 by KousekiMiyo)