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

Real-time Model Development

Operation

Operation Manual

VIS Introductioon

Introduction materials for VIS

VIS Commissioning

Type-A Commissioning

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]

This abbreviation should be avoided because it often refers to rather Transfer Function. (1)

-  ⇤ ← Revision 27 as of 2009-07-15 15:38:50 → 
  Size: 1144
  Editor: RyutaroTakahashi
  Comment:
+   ← Revision 199 as of 2020-02-28 12:38:27 → ⇥
  Size: 3635
  Editor: KokiOkutomi
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 1:
-|| '''[[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

= VIS =

'''V'''ibration '''I'''solation '''S'''ystem is the hardware infrastructure for the main optics in the KAGRA interferometer.
-Line 5:
+Line 9:
-== 防振系 ==
+== Space for VIS-internal use ==
-Line 7:
+Line 11:
- 常温防振＋ヒートリンク＋低温懸架
+=== Quick announcement ===
-Line 9:
+Line 13:
- リーダー： 高橋竜太郎 (NAOJ) <<BR>>
+=== Frequently used links ===
 * '''VIS meeting''': From 14:00 (JST) on every Friday - [[KAGRA/Subgroups/VIS/MeetingNAOJ|Meeting Page]]
-Line 11:
+Line 16:
- サブリーダー： 内山隆 (ICRR)、三代木伸二 (ICRR)
+----
== VIS Upgrades ==

[[KAGRA/Subgroups/VIS/Upgrade|Upgrade Page]]

----
== Instruments ==

=== Suspension types ===
[[KAGRA/Subgroups/VIS/TypeA|Type-A]]

[[KAGRA/Subgroups/VIS/TypeB|Type-B]]

[[KAGRA/Subgroups/VIS/TypeBp|Type-Bp]]

[[KAGRA/Subgroups/VIS/Type-C|Type-C]]

[[KAGRA/Subgroups/VIS/Payload|Payload]]

[[KAGRA/Subgroups/VIS/ActuatorDesign|Actuator design summary]]

[[KAGRA/Subgroups/VIS/ChangeLog|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 (TF<<FootNote(This abbreviation should be avoided because it often refers to rather Transfer Function.)>>)
 * 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 ==
 . [[KAGRA/Subgroups/VIS/IstManual|Installation Procedure]]
 . [[KAGRA/Subgroups/VIS/VISInstWorkInfo|Misc. Installation Work Information]]

 . [[KAGRA/Subgroups/VIS/iKAGRAbKAGRA|Tasks from iKAGRA to bKAGRA]]
----
== Real Time Model Development ==
 . [[KAGRA/Subgroups/VIS/RealTimeModel|Real-time Model Development]]
----
== Operation ==
 . [[KAGRA/Subgroups/VIS/OpsManual|Operation Manual]]

----
== VIS Introductioon ==
 . [[KAGRA/Subgroups/VIS/Introduction|Introduction materials for VIS]]
-Line 14:
+Line 116:
-=== 第2回LCGT防振系作業部会 ===
+----
== VIS Commissioning ==
 . [[KAGRA/Subgroups/VIS/Type-A/Commissioning|Type-A Commissioning]]
-Line 16:
+Line 120:
-月16日(水) 15:00-16:30 天文台輪講室
-Line 18:
+Line 121:
-=== 第1回LCGT防振系作業部会 ===
-Line 20:
+Line 122:
-月3日(水) 17:00-19:00 天文台輪講室
+----
== Archives ==
 . [[KAGRA/Subgroups/VIS/Photos|Photos]]
-Line 22:
+Line 126:
- [[attachment:LCGT/subgroup/vis/agenda1.pdf|作業班、スケジュール]]
+----
== Old Weekly EVO Meeting ==
 . This meeting is suspended.
-Line 24:
+Line 130:
- [[attachment:LCGT/subgroup/vis/ICDsas.doc|ICD]] ([[attachment:ICDsas.pdf|PDF]])
+[[KAGRA/Subgroups/VIS/OldVISMeetings|Past minutes]]
-Line 26:
+Line 132:
- [[attachment:LCGT/subgroup/vis/LCGT-SAS2.pdf|常温-低温接続部]]
+== Subgroup ==
-Line 28:
+Line 134:
- R&Dについて
=== TAMA SAS の問題点 ===
 . [[LCGT/subgroup/vis/tama_sas|Item list to be improved]]
+=== Members ===
-Line 32:
+Line 136:
-=== TAMA Double Pendulum の問題点 ===
 . [[LCGT/subgroup/vis/tama_double|Item list to be improved]]
+ * 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]

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