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=== Sensors, actuators, and motors ===

 * LVDT - Linear Variable Differential Transducer/Transformer, displacement sensor
  * [''Derivative''] Bottom-filter LVDT (BF LVDT)
 * Geophone - inertial velocity sensor
 * Accelerometer -
 * Voice coil actuator

VIS

Vibration Isolation System is the hardware infrastructure for the main optics in the KAGRA interferometer.

Contents

  1. VIS
    1. Space for VIS-internal use
      1. Quick announcement
      2. Frequently used links
    2. VIS Upgrades
    3. Instruments
      1. Suspension types
      2. Suspended optics
      3. Mechanics
      4. Sensors, actuators, and motors
    4. Installation
    5. Real Time Model Development
    6. Operation
    7. VIS Introductioon
    8. VIS Commissioning
    9. Archives
    10. Old Weekly EVO Meeting
    11. Subgroup
      1. Members
      2. Communication info

Space for VIS-internal use

Quick announcement

  • VIS meeting: From 14:00 (JST) on every Friday - Meeting Page

VIS Upgrades

Upgrade Page

Instruments

Suspension types

Type-A

Type-B

Type-Bp

Type-C

Payload

Actuator design summary

Design Change Logs

Suspended optics

The optics in the KAGRA interferometer is often called their acronyms/abbreviations. Please mind also that we call the vacuum chambers or clean booths in a similar manner.

  • Arm cavity
    • ETMX
    • ETMY
    • ITMX
    • ITMY
  • Beam splitter (BS)
  • Signal recycling cavity
    • SRM
    • SR2
    • SR3
  • Power recycling cavity
    • PRM
    • PR2
    • PR3
  • Input optics
    • IMC
    • IMMT1
    • IMMT2
  • Output optics
    • OMMT1
    • OMMT2
    • OSTM
    • OMC
  • Auxiliary optics
    • TMSX
    • TMSY

Mechanics

Tower

  • Pre-isolator
    • Inverted Pendulum (IP)

    • Top GAS Filter (TF1)

  • Standard GAS Filter (SF)
  • Bottom GAS Filter (BF)
  • Magnetic damper

Payload

  • Cryogenic payload (CRYp): The bottom 4 stages in Type-A suspension, branch recoil-mass chain
    • Platform (PF)
    • Marionette (MN)
    • Intermediate Mass (IM)
    • Test Mass (TM)
  • Room-temperature payload: The bottom 2 stages in Type-B and Type-Bp suspension, parallel recoil-mass chain
    • Intermediate Mass (IM)
    • Test Mass (TM)

Sensors, actuators, and motors

  • LVDT - Linear Variable Differential Transducer/Transformer, displacement sensor

    • [Derivative] Bottom-filter LVDT (BF LVDT)

  • Geophone - inertial velocity sensor
  • Accelerometer -
  • Voice coil actuator

Installation

Real Time Model Development

Operation

VIS Introductioon

VIS Commissioning

Archives

Old Weekly EVO Meeting

  • This meeting is suspended.

Past minutes

Subgroup

Members

  • Chief: R. Takahashi
  • Member： N. Ohishi, H. Ishizaki, F. E. Pena Arellano, M. Barton, N. Hirata, R. Flaminio, Y. Aso, T. Akutsu , E. Tapia (NAOJ),

    T. Sekiguchi, K. Yamamoto, T. Uchiyama (ICRR), R. DeSalvo (Univ. of Sannio), E. Majorana (INFN Rome), J. van den Brand, E. Hennes, A. Bertolini, J. van Heijningen, K. Agatsuma (NIKHEF)

Communication info

  • Mailing list: [kagra-seis]

/AELInterfaces   /Acceptance Test   /ActuatorDesign   /AssemblyStatus   /BIO   /BrainStorm/ToDo2019   /CRYInterfaces   /ChangeLog   /ChangeLog/DesignChangeProcedure   /DGSInterfaces   /DGSInterfaces/RTModel   /Daily Operations   /FEM   /FEM/tama_sas   /Guardian   /Installation/Type-A   /Installation/Type-B   /Installation/Type-Bp   /Installation/Type-C   /Installation/iKAGRATM   /Introduction   /IstManual   /KAGRA/Subgroups/VIS/Daily Operations   /Kontrol   /Maintainance   /Mechanics/GAS   /Mechanics/IP   /Mechanics/Pre-Isolator   /MeetingNAOJ   /MeetingNAOJ/20150805   /ModelPlotter   /Motors/FishingRod   /OldVISMeetings   /OpsManual   /OpsManual/AutoBuild   /OpsManual/AutoMeasurement   /OpsManual/BURT   /OpsManual/CommandLineUtils   /OpsManual/DGSMaintainance   /OpsManual/DIO   /OpsManual/DV   /OpsManual/Drawings   /OpsManual/FishingRods   /OpsManual/Foton   /OpsManual/Git   /OpsManual/Guardian   /OpsManual/HealthCheck   /OpsManual/LVDT   /OpsManual/MEDM   /OpsManual/OSEMs   /OpsManual/OpLev   /OpsManual/OpLev/TypeA   /OpsManual/OpLev/TypeB   /OpsManual/Pico   /OpsManual/Pico/BS_Picos   /OpsManual/Pico/Manual   /OpsManual/PumpdownAndVenting   /OpsManual/Remote   /OpsManual/SDF   /OpsManual/SUMCON   /OpsManual/SVN   /OpsManual/Simulink   /OpsManual/Stepper   /OpsManual/Stepper/Direction   /OpsManual/StripTool   /OpsManual/SuspensionControlModeling   /OpsManual/Thermometers   /OpsManual/Traverser   /OpsManual/Troubleshooting   /OpsManual/TypeA   /OpsManual/TypeB   /OpsManual/TypeB/BSData   /OpsManual/TypeB/ControlWork01   /OpsManual/TypeB/HealthCheck   /OpsManual/TypeB/PumpdownAndVenting   /OpsManual/TypeB/SR2Data   /OpsManual/TypeB/SR3Data   /OpsManual/TypeB/SRMData   /OpsManual/TypeBp   /OpsManual/TypeC   /OpsManual/VisualStudioCode   /OpsManual/cdscfg   /OpsManual/diaggui   /OpsManual/vistools   /Optics   /Optics/ETMX   /Payload   /Photos   /RealTimeModel   /ReleaseSensor   /Requirement   /Schedule   /Sensors/Geophone   /Sensors/InertialSensor   /Sensors/LVDT   /Sensors/OpLev   /Simulation   /TempControl   /Type-A/Commissioning   /Type-A/Commissioning/Tasks   /Type-C   /Type-C/Design2016   /Type-C/Drawings   /Type-C/Drawings/Comment   /Type-C/IMC_Suspension   /Type-C/IMMT   /Type-C/OSEM   /Type-C/iKAGRA_ETM   /TypeA   /TypeA/DGSchannel   /TypeA/DGSrack   /TypeA/ETMX   /TypeA/ETMY   /TypeA/Feedthough   /TypeA/ITMX   /TypeA/ITMY   /TypeA/Meeting   /TypeA/WorkingLog   /TypeA/WorkingLog/dir_information   /TypeB   /TypeB/April2018   /TypeB/BSTestHangIssues   /TypeB/BSdetail   /TypeB/Boxes and cables used in SR3   /TypeB/Boxes and cables used in SRM   /TypeB/Boxes used in BS   /TypeB/Boxes used in SR3   /TypeB/Characterization   /TypeB/ItemsSR   /TypeB/LVDT Driver info   /TypeB/March2018   /TypeB/MarkB   /TypeB/Minutes   /TypeB/NotesProvisional   /TypeB/PaperTODOlist   /TypeB/PaperTODOlist/klogs_md_ring   /TypeB/PostO3   /TypeB/Rack Information   /TypeB/SR2detail   /TypeB/SR3_installation   /TypeB/SR3detail   /TypeB/SRMdetail   /TypeB/Status   /TypeB/TaskList   /TypeB/ToDo   /TypeB/ToDoBS   /TypeB/ToDoEtc   /TypeB/ToDoOld   /TypeB/ToDoOldBS   /TypeB/ToDoOldSR   /TypeB/ToDoSR   /TypeB/WishList   /TypeB/dummyBS   /TypeBp   /TypeBp/Overview   /TypeBp/PR2   /TypeBp/PR3   /TypeBp/PRM   /TypeBp/PRsus   /TypeBp/Rack   /TypeBp/WorkNotes   /TypeBp/meeting160323   /TypeBp/meeting160721   /Upgrade   /VIS/OpsManual/Stepper/Direction   /VISAgenda20160610   /VISAgenda20160617   /VISHack   /VISInstWorkInfo   /VISMinutes20151030   /VISMinutes20151105   /VISMinutes20151113   /VISMinutes20151120   /VISMinutes20151127   /VISMinutes20151204   /VISMinutes20151211   /VISMinutes20151218   /VISMinutes20151222   /VISMinutes20151225   /VISMinutes20160106   /VISMinutes20160107   /VISMinutes20160108   /VISMinutes20160115   /VISMinutes20160122   /VISMinutes20160126   /VISMinutes20160129   /VISMinutes20160204   /VISMinutes20160205   /VISMinutes20160212   /VISMinutes20160219   /VISMinutes20160226   /VISMinutes20160304   /VISMinutes20160311 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  1. This abbreviation should be avoided because it often refers to rather Transfer Function. (1)

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