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<<TableOfContents(3)>>
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== Vibration Isolation ==
 . Chief： R. Takahashi(ICRR)
 . Member： T. Uchiyama(ICRR), R. DeSalvo(Univ. of Sannio), H. Ishizaki(NAOJ), A. Takamori(ERI), E. Majorana(INFN), T. Sekiguchi(ICRR), K. Yamamoto(ICRR)		 = Vibration Isolation System (VIS) =
== Requirements ==
VIS subgroup guarantee the following items;
 1. '''Isolation performance''': Does not contaminate the design sensitivity
 2. '''Stability''': Keep the above performance in anytime
 3. '''Operability''': Recover the all VIS system automatically
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----
== Weekly EVO Meeting ==
 . Every Wednesday, 21:00(JST)		 Detail descriptions are written in here: [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11930|JGW-E2011930]]
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=== The ??th (5 September, 2012) ===
 . [[attachment:KAGRAvi_minute_2012Sep5|Minute]]		 ||<#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'''||<#1e50a2 style="color:#ffffff; text-align:center;"> '''Control'''||
|| 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/Control/General|General concept]] ||
|| [[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]] || --- ||
|| - ||<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]] || - || - ||
|| - ||<style="font-weight:bold;"> [[KAGRA/Subgroups/VIS/TMS-VIS|TMS-VIS]] || --- ||<-2 style="text-align:center;"> [[KAGRA/Subgroups/VIS/Sensors/OSEM|OSEM]] || - || - ||
|| - || - || - || - || [[KAGRA/Subgroups/VIS/OpsManual/FishingRods|Fishing Rods]] || - || - ||
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=== The 24th (28 September, 2011) ===
 . [[attachment:KAGRA/Subgroups/VIS/modal_0928.pdf|Modal Analysis of Tripod by Takanori]]		 ||<#a31f52 style="color:#ffffff; text-align:center;"> '''Meetings'''||<#a31f52 style="color:#ffffff; text-align:center;"> '''Management'''||<#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/AELInterfaces|AEL interfaces]] ||[[KAGRA/Subgroups/VIS/BugReports|Bug Reports]] ||[[KAGRA/Subgroups/VIS/OpsManual/SUMCON|SUMCON]]||
||[[KAGRA/Subgroups/VIS/ExtraMeetings|Extraordinary meetings]] || [[https://github.com/orgs/gw-vis/projects|Github Projects]]|| [[KAGRA/Subgroups/VIS/DGSInterfaces|DGS interfaces]] || [[KAGRA/Subgroups/VIS/TroubleShooting|Trouble Shooting]] || [[KAGRA/Subgroups/VIS/ModelPlotter|ModelPlotter]] ||
||[[KAGRA/Subgroups/VIS/OldVISMeetings|Old VISMeeting]] || || || || [[KAGRA/Subgroups/VIS/OpsManual/AutoMeasurement|AutoMeasurement]] ||
|| --- || --- || --- || --- || [[KAGRA/Subgroups/VIS/OpsManual/SuspensionControlModeling|SuspensionControlModeling]] ||
|| --- || --- || --- || --- || [[KAGRA/Subgroups/VIS/Kontrol|Kontrol]] ||
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=== The 23th (15 September, 2011) ===
 . [[attachment:KAGRA/Subgroups/VIS/TypeB_sim_0915.pdf|Simulation on TypeB by Takanori]]
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=== The 22th (7 September, 2011) ===
 . [[attachment:KAGRA/Subgroups/VIS/Type-B_system_rycy.pdf|Z-Assembly for RM by Riccardo]]
 . [[attachment:KAGRA/Subgroups/VIS/Type-B_system_bs.pdf|Z-Assembly for BS by Riccardo]]
 . [[attachment:KAGRA/Subgroups/VIS/TypeB_sim_0907.pdf|Simulation on TypeB by Takanori]]		 ||<#52a31f style="color:#ffffff; text-align:center;"> '''Design''' ||<#52a31f style="color:#ffffff; text-align:center;"> '''Detail Design''' ||<#52a31f style="color:#ffffff; text-align:center;"> '''Installation''' ||<#52a31f style="color:#ffffff; text-align:center;"> '''Commissioning''' ||<#52a31f style="color:#ffffff; text-align:center;"> '''Operation''' ||<#52a31f style="color:#ffffff; text-align:center;"> '''Future Upgrade''' ||
|| Suspension Design || [[KAGRA/Subgroups/VIS/CAD|CAD]] || [[KAGRA/Subgroups/VIS/IstManual|Procedure]] || [[KAGRA/Subgroups/VIS/VISMON|VIS Monitors]] || [[KAGRA/Subgroups/VIS/OpsManual|Manual]]||[[KAGRA/Subgroups/VIS/Upgrade|Upgrade]] ||
|| --- || [[KAGRA/Subgroups/VIS/RackLayout|Rack Layout]] || [[KAGRA/Subgroups/VIS/VISInstWorkInfo|Misc.]] || [[KAGRA/Subgroups/VIS/OpsManual/HealthCheck|HealthCheck]] ||├ --- || --- ||
|| --- || [[KAGRA/Subgroups/VIS/Cabling|Cabling]] || [[KAGRA/Subgroups/VIS/Calibration|Calibration]] || --- || ├ --- || --- ||
|| --- || --- || [[KAGRA/Subgroups/VIS/Acceptance Test|Acceptance Test]] || --- || ├ --- || --- ||
|| --- || --- || [[KAGRA/Subgroups/VIS/Diagonalization|Diagonalization]] || --- || └ || --- ||
|| --- || --- || --- || --- || [[KAGRA/Subgroups/VIS/OpsManual/TypeA|TypeA|]] || --- ||
|| --- || --- || --- || --- || [[KAGRA/Subgroups/VIS/OpsManual/TypeB|TypeB|]] || --- ||
|| --- || --- || --- || --- || [[KAGRA/Subgroups/VIS/OpsManual/TypeBp|TypeBp|]] || --- ||
|| --- || --- || --- || --- || [[KAGRA/Subgroups/VIS/OpsManual/TypeC|TypeC|]] || --- ||
|| --- || --- || --- || --- || [[KAGRA/Subgroups/VIS/OpsManual/TMS-VIS|TMS-VIS|]] || --- ||
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=== The 21th (31 August, 2011) ===
=== The 20th (24 August, 2011) ===
=== The 19th (10 August, 2011) ===
=== The 18th (27 July, 2011) ===
 . [[attachment:KAGRA/Subgroups/VIS/PayloadB_0727.pdf|Design of Type-B payload by Riccardo]]		 ||<#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]] || ||
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=== The 17th (20 July, 2011) ===
=== The 16th (13 July, 2011) ===
 . [[attachment:KAGRA/Subgroups/VIS/SR2-PR2_0711.pdf|SR2-PR2 recoil mass by Riccardo]]
 . [[attachment:KAGRA/Subgroups/VIS/angle_0713.pdf|Angular fluctuation of TM by Takanori]]

=== The 15th (6 July, 2011) ===
 . [[attachment:KAGRA/Subgroups/VIS/2type_0701.pdf|Type-B payload model by Sekiguchi]]

=== The 14th (29 June, 2011) ===
 . [[attachment:KAGRA/Subgroups/VIS/kapton_0627.pdf|Kapton Wire by Sekiguchi]]

=== The 13th (22 June, 2011) ===
 . [[http://tamago.mtk.nao.ac.jp/ishizaki/LCGT/kaptonwire/cable.pdf|Kapton Wire by Ishizaki]]

=== The 12th (15 June, 2011) ===
=== The 11th (8 June, 2011) ===
 . [[attachment:KAGRA/Subgroups/VIS/minute0608.pdf|Minute]]

=== The 10th (1 June, 2011) ===
 . [[attachment:KAGRA/Subgroups/VIS/damping0601.pdf|Mode damping study by Takanori]]

=== The 9th (25 May, 2011) ===
=== The 8th (18 May, 2011) ===
 . [[attachment:KAGRA/Subgroups/VIS/magicwand.png|Magic wands by Takanori]]
 . [[attachment:KAGRA/Subgroups/VIS/Check110512.pdf|Heavier test mass by Ettore and Takanori]]

=== The 7th (11 May, 2011) ===
 . [[attachment:KAGRA/Subgroups/VIS/rep110511.pdf|Report by Takanori]]

=== The 6th (27 April, 2011) ===
 . [[attachment:KAGRA/Subgroups/VIS/dimension110427.docx|Payload dimensions by Riccardo]]

=== The 5th (20 April, 2011) ===
 . [[attachment:KAGRA/Subgroups/VIS/3D_model.pdf|Parameter Configuration by Ettore]]

=== (11 April, 2011) ===
 . [[attachment:KAGRA/Subgroups/VIS/LCGT_PAY_10-30.pdf|Parameter Configuration by Ettore]]

=== The 4th (6 April, 2011) ===
 . [[attachment:KAGRA/Subgroups/VIS/10-30_April06.docx|Simulation by Ettore]]
 . [[attachment:KAGRA/Subgroups/VIS/sequence110406.pdf|Installation sequence by Riccardo]]

=== The 3rd (30 March, 2011) ===
 . [[attachment:KAGRA/Subgroups/VIS/coordinate110330.pdf|Coordinate system by Ryutaro]]
 . [[attachment:KAGRA/Subgroups/VIS/110330_isasA.pdf|Simulation by Takanori]]

=== The 2nd (23 March, 2011) ===
 . [[attachment:KAGRA/Subgroups/VIS/memo110323.txt|Comments by Riccardo]]
 . [[attachment:KAGRA/Subgroups/VIS/report110323.doc|Status report by Riccardo]]
 . [[attachment:KAGRA/Subgroups/VIS/sim110323.pptx|Simulation by Ettore]]

=== The 1st (16 March, 2011) ===
 . [[attachment:KAGRA/Subgroups/VIS/Tower-a.pdf|Design for Type-A system]]
 . [[attachment:KAGRA/Subgroups/VIS/filter-chain.pdf|Detail of filter's chain]]

----
== LCGT防振系作業部会(2009) ==
=== 第6回 ===
 . 11月12日(木) 15:00-16:30 天文台輪講室
 . [[attachment:KAGRA/Subgroups/VIS/Modeling6.ppt|Model vs. Measurement in TAMA-SAS]]
 . [[attachment:KAGRA/Subgroups/VIS/chamber-AB.pdf|Design of Type-A,B chamber (rev.)]]

=== 第5回 ===
 . 10月15日(木) 13:00-14:30 天文台大会議室 ([[attachment:KAGRA/Subgroups/VIS/minutes5.pdf|議事録]])
 . [[attachment:KAGRA/Subgroups/VIS/Modeling5.ppt|LCGT-SAS Modeling 5 (Type-B,C)]]
 . [[attachment:KAGRA/Subgroups/VIS/chamber-A.pdf|Design of Type-A chamber]]

=== ブレーンストーミング ===
 . 10月1日(木) 13:00-15:00 東京大学理学部１号館445号室 ([[attachment:KAGRA/Subgroups/VIS/minutes-b.pdf|議事録]])
 . [[attachment:KAGRA/Subgroups/VIS/brest.pdf|メモ]]

=== 第4回 ===
 . 9月3日(木) 15:00-16:30 天文台輪講室 ([[attachment:KAGRA/Subgroups/VIS/minutes4.pdf|議事録]])
 . [[attachment:KAGRA/Subgroups/VIS/Modeling3.ppt|LCGT-SAS Modeling 3 (Gain boost)]]
 . [[attachment:KAGRA/Subgroups/VIS/Modeling4.pdf|LCGT-SAS Modeling 4 (Vertical, Pitch)]]
 . [[attachment:KAGRA/Subgroups/VIS/ICDsas2.doc|ICD update]] ([[attachment:ICDsas2.pdf|PDF]])

=== 第3回 ===
 . 8月6日(木) 15:00-16:30 天文台輪講室 ([[attachment:KAGRA/Subgroups/VIS/minutes3.pdf|議事録]])
 . [[attachment:KAGRA/Subgroups/VIS/Modeling2.ppt|LCGT-SAS Modeling 2]]
 . [[attachment:KAGRA/Subgroups/VIS/RandD2.pdf|低温懸架のR&Dについて]]

=== 第2回 ===
 . 7月16日(木) 15:00-16:30 天文台輪講室 ([[attachment:KAGRA/Subgroups/VIS/minutes2.pdf|議事録]])
 . [[attachment:KAGRA/Subgroups/VIS/Modeling1.ppt|LCGT-SAS Modeling]]
 . [[attachment:KAGRA/Subgroups/VIS/RandD.pdf|LCGT-SASのR&Dについて]]

=== 第1回 ===
 . 6月3日(水) 17:00-19:00 天文台輪講室 ([[attachment:KAGRA/Subgroups/VIS/minutes1.pdf|議事録]])
 . [[attachment:KAGRA/Subgroups/VIS/agenda1.pdf|作業班、スケジュール]]
 . [[attachment:KAGRA/Subgroups/VIS/ICDsas.doc|ICD]] ([[attachment:ICDsas.pdf|PDF]])
 . [[attachment:KAGRA/Subgroups/VIS/LCGT-SAS2.pdf|常温-低温接続部]]
 . R&Dについて (次回)

----
== Archive ==
=== TAMA SAS ===
 . [[attachment:KAGRA/Subgroups/VIS/Report2009.ppt|Evaluation of TAMA-SAS for LCGT]]
 . [[attachment:tama_sas.pdf|Drawings of TAMA SAS]]
 . [[KAGRA/Subgroups/VIS/FEM/tama_sas|Item list to be improved]]

=== TAMA Double Pendulum ===
 . [[LCGT/subgroup/vis/tama_double|Item list to be improved]]

=== 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]]

=== LCGT-SAS model ===
 . Transfer function X0~X7/Xg --([[attachment:KAGRA/Subgroups/VIS/model_trf.txt|(old)]])--
 . Modeling M-file --([[attachment:KAGRA/Subgroups/VIS/model_mfile.zip|(2009/8/15)]])--[[attachment:KAGRA/Subgroups/VIS/model_mfile2.zip|(2009/8/17)]]
 . Spectrum of displacement --([[attachment:KAGRA/Subgroups/VIS/model_disp.zip|(2009/8/15)]])--[[attachment:KAGRA/Subgroups/VIS/model_disp2.zip|(2009/8/17)]]

=== Finite Element Analysis ===
 . [[KAGRA/Subgroups/VIS/FEM|FEM Page]]

=== Rigid-Body Models ===
 . [[KAGRA/Subgroups/VIS/Simulation|Simulation Page]]		 -----
/!\ [April 28. 2020] Miyo is cleaning up the VIS wiki pages. Progress is posted [[https://github.com/gw-vis/kagra-vis/issues/18|here]].

Vibration Isolation System (VIS)

Requirements

VIS subgroup guarantee the following items;

  1. Isolation performance: Does not contaminate the design sensitivity

  2. Stability: Keep the above performance in anytime

  3. Operability: Recover the all VIS system automatically

Detail descriptions are written in here: JGW-E2011930

Design

Suspensions

Mechanics

Sensors

Actuators/Motors

Digital System

Control

Concept?

Type-A

Pre-Isolator

Inertial Sensor

Voice coil actuator

RTModel

General concept

Actuator Design

Type-B

GAS

LVDT

Solenoid actuator?

Guardian

---

-

Type-Bp

Magnetic damper

Photo Sensor

Picomotor

SDF

-

-

Type-C

Maraging wire

Optical Lever (OpLev)

Stepper Motor

-

-

-

TMS-VIS

---

OSEM

-

-

-

-

-

-

Fishing Rods

-

-

Meetings

Management

Other subsystem interfaces

For Users

VIS Apps

Weekly VIS meeting

Schedule

AEL interfaces

Bug Reports

SUMCON

Extraordinary meetings

Github Projects

DGS interfaces

Trouble Shooting

ModelPlotter

Old VISMeeting

AutoMeasurement

---

---

---

---

SuspensionControlModeling

---

---

---

---

Kontrol

Design

Detail Design

Installation

Commissioning

Operation

Future Upgrade

Suspension Design

CAD

Procedure

VIS Monitors

Manual

Upgrade

---

Rack Layout

Misc.

HealthCheck

├ ---

---

---

Cabling

Calibration

---

├ ---

---

---

---

Acceptance Test

---

├ ---

---

---

---

Diagonalization

---

└

---

---

---

---

---

TypeA

---

---

---

---

---

TypeB

---

---

---

---

---

TypeBp

---

---

---

---

---

TypeC

---

---

---

---

---

TMS-VIS

---

Links, Misic.

Documents

Wiki SEI, SUS

VIS Introduction

Log SEI, LHO, LLO, Virgo

VIS Doc. Tree　

Photos

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

KAGRA/Subgroups/VIS (last edited 2022-02-25 19:10:23 by HirotakaYuzurihara)