|
Size: 4041
Comment:
|
Size: 5055
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 7: | Line 7: |
| * '''VIS meeting''': From 14:00 (JST) on every Friday - [[KAGRA/Subgroups/VIS/MeetingNAOJ|Meeting Page]] ||<#89C3EB style="texxt-align:center;"> '''Meetings'''|| ||[[KAGRA/Subgroups/VIS/MeetingNAOJ|VIS Meeting]] || ||<#89C3EB |2 style="text-align:center; "> '''Tall suspensions''' ||<:-4> [[KAGRA/Subgroups/VIS/TypeA|TypeA]] ||<:-4> [[KAGRA/Subgroups/VIS/TypeB|TypeB]] ||<:-3> [[KAGRA/Subgroups/VIS/TypeBp|TypeBp]] || || [[KAGRA/Subgroups/VIS/TypeA/ETMX|ETMX]] || [[KAGRA/Subgroups/VIS/TypeA/ETMY|ETMY]] || [[KAGRA/Subgroups/VIS/TypeA/ITMX|ITMX]] || [[KAGRA/Subgroups/VIS/TypeA/ITMY|ITMY]] || ||<#89C3EB |2 style="text-align:center; "> '''Short suspensions''' ||<:-4> [[KAGRA/Subgroups/VIS/Type-C|Type-C]]||<:-2> TMS-VIS ||<:-3> [[KAGRA/Subgroups/VIS/TypeBp|Type-Bp]] || ||<|4> [[KAGRA/Subgroups/VIS/Type-C|Type-C]] || || || || || || || || || || |
|
| Line 9: | Line 24: |
| == Space for VIS-internal use == === Quick announcement === === Frequently used links === * '''VIS meeting''': From 14:00 (JST) on every Friday - [[KAGRA/Subgroups/VIS/MeetingNAOJ|Meeting Page]] |
|
| Line 25: | Line 34: |
| Line 41: | Line 51: |
| The optics in the KAGRA interferometer are often called their acronyms/abbreviations. Please mind also that we call the vacuum chambers or clean booths in a similar manner. | The optics in the KAGRA interferometer are often called their acronyms/abbreviations<<FootNote(Please mind also that we call the vacuum chambers or clean booths in a similar manner.)>> listed below. The linked pages from the optics' names show the specification of each component of the suspension systems. |
| Line 75: | Line 86: |
| * Top GAS Filter (TF<<FootNote(This abbreviation should be avoided because it often refers to rather Transfer Function.)>>) | * Top GAS Filter (TF<<FootNote(This abbreviation should be avoided because it often refers to rather ''transfer function''.)>>) |
| Line 94: | Line 105: |
| ==== |
|
| Line 101: | Line 114: |
| * Picomotor * |
* '''Picomotor''' |
| Line 105: | Line 117: |
| == Integration with digital system == | == Signal processing == |
| Line 107: | Line 119: |
| . ''See also:'' | . ''Related subgroups'': [[KAGRA/Subgroups/AEL|AEL]], [[KAGRA/Subgroups/DGS|DGS]] |
| Line 109: | Line 121: |
| All the sensor readouts, actuation signals, and motor operation commands are governed with KAGRA digital signal processing system provided by DGS subsystem. | All the sensor readouts, actuation signals, and motor operation commands are governed with the KAGRA digital signal processing system provided by DGS subgroup. === Real-time front-end model === . ''See also:'' [[KAGRA/Subgroups/VIS|Real-time model development]] === === ---- == Apps == |
VIS
Vibration Isolation System is the hardware infrastructure for the main optics in the KAGRA interferometer.
VIS meeting: From 14:00 (JST) on every Friday - Meeting Page
Meetings |
Contents
VIS Upgrades
Instruments
Suspension types
Suspended optics
The optics in the KAGRA interferometer are often called their acronyms/abbreviations1 listed below. The linked pages from the optics' names show the specification of each component of the suspension systems.
- 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 (TF2)
- 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)
Electronics
A list of local sensors, actuators, and motors equipped by the suspension systems.
====
LVDT - Linear Variable Differential Transducer/Transformer, displacement sensor
[Derivative] Bottom-filter LVDT (BF LVDT)
Geophone - inertial velocity sensor
Accelerometer -
OSEM - Optical Sensor and Electromagnet
Optical Lever
Fishing rod
Picomotor
Signal processing
All the sensor readouts, actuation signals, and motor operation commands are governed with the KAGRA digital signal processing system provided by DGS subgroup.
Real-time front-end model
See also: Real-time model development
Apps
Installation
Real Time Model Development
Operation
VIS Introductioon
VIS Commissioning
Archives
Old Weekly EVO Meeting
- This meeting is suspended.
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]