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||'''[[LCGT|PROJECT TOP]]''' ||[[LCGT/subgroup/analysis|GW Analysis]] ||[[LCGT/subgroup/ifo|Interferometer]] ||[[LCGT/subgroup/vacuum|Vacuum & Cryostat]] ||[[LCGT/subgroup/laser|Laser & Optics]] ||[[LCGT/subgroup/vis|Seismic Isolator]] ||[[LCGT/subgroup/infra|Infrastructure]] || ## page was renamed from LCGT/subgroup/vis
= Vibration Isolation System (VIS) =
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== 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）
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<<TableOfContents(3)>> Reference [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=365|JGW-T1100365-v2]]
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== 防振系 ==
 . 常温防振＋ヒートリンク＋低温懸架
 . リーダー： 高橋竜太郎 (NAOJ)
 . サブリーダー： 内山隆 (ICRR)、三代木伸二 (ICRR)		 -----
||<#1e50a2 style="color:#ffffff; text-align:center;"> '''Design''' ||<#1e50a2 style="color:#ffffff; text-align:center;"> '''Suspensions''' ||<#1e50a2 style="color:#ffffff; text-align:center;"> '''Mechanics''' ||<#1e50a2 style="color:#ffffff; text-align:center;"> '''Sensors''' ||<#1e50a2 style="color:#ffffff; text-align:center;"> '''Actuators/Motors'''||<#1e50a2 style="color:#ffffff; text-align:center;"> '''Digital System'''||
|| Concept? ||<style="font-weight:bold;"> [[KAGRA/Subgroups/VIS/TypeA|Type-A]] || [[KAGRA/Subgroups/VIS/Mechanics/Pre-Isolator|Pre-Isolator]] || [[KAGRA/Subgroups/VIS/Sensors/InertialSensor|Inertial Sensor]] || [[KAGRA/Subgroups/VIS/Actuators/VoiceCoilActuator|Voice coil actuator]] || [[KAGRA/Subgroups/VIS/RealTimeModel|RTModel]] ||
||[[KAGRA/Subgroups/VIS/ActuatorDesign|Actuator Design]] ||<style="font-weight:bold;"> [[KAGRA/Subgroups/VIS/TypeB|Type-B]] || [[KAGRA/Subgroups/VIS/Mechanics/GAS|GAS]] || [[KAGRA/Subgroups/VIS/Sensors/LVDT|LVDT]] || Solenoid actuator? || [[KAGRA/Subgroups/VIS/Guardian|Guardian]] ||
||[[KAGRA/Subgroups/VIS/Requirement|Requirement]] ||<style="font-weight:bold;"> [[KAGRA/Subgroups/VIS/TypeBp|Type-Bp]] || [[KAGRA/Subgroups/VIS/Mechanics/MagneticDamper|Magnetic damper]] ||[[KAGRA/Subgroups/VIS/Sensors/PhotoSensor|Photo Sensor]] || [[KAGRA/Subgroups/VIS/OpsManual/Pico|Picomotor]] || [[KAGRA/Subgroups/VIS/OpsManual/SDF|SDF]] ||
|| - ||<style="font-weight:bold;"> [[KAGRA/Subgroups/VIS/Type-C|Type-C]] || [[KAGRA/Subgroups/VIS/Mechanics/MaragingWire|Maraging wire]] || [[KAGRA/Subgroups/VIS/Sensors/OpLev|Optical Lever (OpLev)]] || [[KAGRA/Subgroups/DGS/Projects/StepperMotor|Stepper Motor]] || [[KAGRA/Subgroups/VIS/BIO|BIO]] ||
|| - ||<style="font-weight:bold;"> [[KAGRA/Subgroups/VIS/TMS-VIS|TMS-VIS]] || - || [[KAGRA/Subgroups/VIS/ReleaseSensor|Release Sensor]] || [[KAGRA/Subgroups/VIS/OpsManual/FishingRods|Fishing Rods]] || - ||
|| - || - || - || - || [[KAGRA/Subgroups/VIS/OpsManual/Traverser|Traverser]] || - ||
|| - || - || - || - || [[KAGRA/Subgroups/VIS/OpsManual/PicomotorPowerControlSwitch| PicomotorPowerControlSwitch]] || - ||
|| - || - || - ||<-2 style="text-align:center;"> [[KAGRA/Subgroups/VIS/Sensors/OSEM|OSEM]] || - ||
|| - || - || - ||<-2 style="text-align:center;"> [[KAGRA/Subgroups/VIS/TempControl|Temp. Control]] || - ||
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=== 第3回LCGT防振系作業部会 ===
 . 8月6日(木) 15:00-16:30 天文台輪講室
 [[attachment:LCGT/subgroup/vis/Modeling2.ppt|LCGT-SAS Modeling 2]]
 . [[attachment:LCGT/subgroup/vis/RandD2.pdf|低温懸架のR&Dについて]]		 ||<#a31f52 style="color:#ffffff; text-align:center;"> '''Meetings'''||<#a31f52 style="color:#ffffff; text-align:center;"> '''Management'''||<#a31f52 style="color:#ffffff; text-align:center;"> '''Maintainance/Diagnostics'''||<#a31f52 style="color:#ffffff; text-align:center;"> '''Other subsystem interfaces''' ||<#a31f52 style="color:#ffffff; text-align:center;"> '''For Users'''||<#a31f52 style="color:#ffffff; text-align:center;"> '''VIS Apps''' ||
||[[KAGRA/Subgroups/VIS/MeetingNAOJ|Weekly VIS meeting]] || [[KAGRA/Subgroups/VIS/Schedule|Schedule]]|| [[KAGRA/Subgroups/VIS/Maintainance|Maintainance]] ||[[KAGRA/Subgroups/VIS/AELInterfaces|AEL interfaces]] ||[[KAGRA/Subgroups/VIS/BugReports|Bug Reports]] ||[[KAGRA/Subgroups/VIS/OpsManual/SUMCON|SUMCON]]||
||[[KAGRA/Subgroups/VIS/ExtraMeetings|Extraordinary meetings]] || [[https://app.zenhub.com/workspaces/upgrade-for-o4-5f56e83aff8ec50012d90116/board?repos=276073075|Github Projects]]|| [[KAGRA/Subgroups/VIS/Acceptance Test|Acceptance Test]] || [[KAGRA/Subgroups/VIS/DGSInterfaces|DGS interfaces]] || [[KAGRA/Subgroups/VIS/TroubleShooting|Trouble Shooting]] || [[KAGRA/Subgroups/VIS/ModelPlotter|ModelPlotter]] ||
||[[KAGRA/Subgroups/VIS/OldVISMeetings|Old VISMeeting]]||[[https://github.com/gw-vis|Github Repository]] || [[KAGRA/Subgroups/VIS/OpsManual/DGSMaintainance| DGSMaintainance]] ||[[KAGRA/Subgroups/VIS/CRYInterfaces|CRY interface]] || || [[KAGRA/Subgroups/VIS/OpsManual/AutoMeasurement|AutoMeasurement]] ||
|| --- || --- || --- || --- || --- || [[KAGRA/Subgroups/VIS/OpsManual/SuspensionControlModeling|SuspensionControlModeling]] ||
|| --- || --- || --- || --- || --- || [[KAGRA/Subgroups/VIS/Kontrol|Kontrol]] ||
|| --- || --- || --- || --- || --- || [[KAGRA/Subgroups/VIS/VISHack|VIS Health Check]] ||
|| --- || --- || --- || --- || --- || [[KAGRA/Commissioning/NoiseBudgetter|Noise Budgetter]] ||
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=== 第2回LCGT防振系作業部会 ===
 . 7月16日(木) 15:00-16:30 天文台輪講室 ([[attachment:LCGT/subgroup/vis/minutes2.pdf|議事録]])
 . [[attachment:LCGT/subgroup/vis/Modeling1.ppt|LCGT-SAS Modeling]]
 . [[attachment:LCGT/subgroup/vis/RandD.pdf|LCGT-SASのR&Dについて]]		 ||<#808080 style="color:#ffffff; text-align:center;"> '''Links, Misic.''' ||<#808080 style="color:#ffffff; text-align:center;"> '''Documents''' ||
||Wiki [[https://awiki.ligo-wa.caltech.edu/wiki/Seismic_Isolation| SEI]], [[https://awiki.ligo-wa.caltech.edu/wiki/Suspensions|SUS]] || [[KAGRA/Subgroups/VIS/Introduction|VIS Introduction]] ||
||Log [[https://alog.ligo-la.caltech.edu/SEI/index.php?content=1| SEI]], [[https://alog.ligo-wa.caltech.edu/aLOG/index.php?content=1|LHO]], [[https://alog.ligo-la.caltech.edu/aLOG/|LLO]], [[https://logbook.virgo-gw.eu/virgo/|Virgo]] || [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4005|VIS Doc. Tree]]　||
|| [[KAGRA/Subgroups/VIS/Photos|Photos]] || [[KAGRA/Subgroups/VIS/Daily Operations|Daily Operations]] ||
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=== 第1回LCGT防振系作業部会 ===
 . 6月3日(水) 17:00-19:00 天文台輪講室 ([[attachment:LCGT/subgroup/vis/minutes1.pdf|議事録]])
 . [[attachment:LCGT/subgroup/vis/agenda1.pdf|作業班、スケジュール]]
 . [[attachment:LCGT/subgroup/vis/ICDsas.doc|ICD]] ([[attachment:ICDsas.pdf|PDF]])
 . [[attachment:LCGT/subgroup/vis/LCGT-SAS2.pdf|常温-低温接続部]]
 . R&Dについて (次回)		 /!\ [April 28. 2020] Miyo is cleaning up the VIS wiki pages. Progress is posted [[https://github.com/gw-vis/kagra-vis/issues/18|here]].
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=== TAMA SAS の問題点 ===
 . [[attachment:tama_sas.pdf|Drawings of TAMA SAS]]
 . [[LCGT/subgroup/vis/tama_sas|Item list to be improved]]		 -----
=== Old (Please arrange me) ===
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=== TAMA Double Pendulum の問題点 ===
 . [[LCGT/subgroup/vis/tama_double|Item list to be improved]]		  * [[KAGRA/Subgroups/VIS/IstManual|Procedure]]
 * [[KAGRA/Subgroups/VIS/VISInstWorkInfo|Misc.]]
 * [[KAGRA/Subgroups/VIS/OpsManual|Manual]]
 * [[KAGRA/Subgroups/VIS/Upgrade|Upgrade]]
 * [[KAGRA/Subgroups/VIS/OpsManual/HealthCheck|HealthCheck]]
 * [[KAGRA/Subgroups/VIS/OpsManual/TypeA|OpsManual-TypeA|]]
 * [[KAGRA/Subgroups/VIS/OpsManual/TypeB|OpsManual-TypeB|]]
 * [[KAGRA/Subgroups/VIS/OpsManual/TypeBp|OpsManual-TypeBp|]]
 * [[KAGRA/Subgroups/VIS/OpsManual/TypeC|OpsManual-TypeC|]]
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=== Seismic spectrum in Kamioka mine ===
 . [[attachment:LCGT/subgroup/ifo/SPI/HeatLink/0702seis_Araya.zip|In loud day]] (This data should be used as nominal ground motion in Kamioka)
 . [[attachment:CLIO/NoiseBudgets/seismic/cryo_seismic.txt|In cryostat]]

=== Transfer function X0~7/Xg in the LCGT-SAS model ===
 . [[attachment:LCGT/subgroup/vis/model_trf.txt|TRF]]--( )--		 -----

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

---

---

---

---

---

SuspensionControlModeling

---

---

---

---

---

Kontrol

---

---

---

---

---

VIS Health Check

---

---

---

---

---

Noise Budgetter

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 2022-02-25 19:10:23 by HirotakaYuzurihara)