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| = Viewports on Vacuum Chambers (at Room Temperature) = | = Viewports (at Room Temperature) = '''''Related subgroups:''''' MIR, IOO, MIF, VAC, CRY, VIS... |
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| This subsystem provides the optical viewports to pass through the optical beams from the vacuum chambers in which LCGT main interferometer is stored. | This subsystem provides the optical viewports mounted on the vacuum chambers to pass the optical beams into or from the LCGT in-vacuum interferometer. |
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| The viewport subsystems that will be applied to the cryo-vacuum chambers for ITMs/ETMs of the future LCGT are '''NOT''' included in the scope of this subsystem so far. | The viewport subsystems that will be dedicated to the cryo-vacuum chambers for the future LCGT are '''NOT''' included in the scope of this subsystem so far. |
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| == Introduction == We can extract optical beams from the interferometer inside the vacuum chamber at the viewports. The optical beams are for length control scheme of the interferometer, alignment control scheme of the mirrors, optical levers for LCGT-SUS, and other monitoring devices (CCD or equivalents). === Applicable Documents === * Length Sensing doc * Alignment Sensing doc |
== Applicable Documents == * Spec. for vacuum chambers * Optical Layout Drawing of the LCGT interferometer * Length Sensing and Control doc * Alignment Sensing and Control doc |
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| === Definitions === | == General Description == We can extract optical beams at the viewports from the interferometer inside the vacuum chamber. The optical beams are for length and alignment sensing and control scheme, optical levers for suspensions, and other monitoring devices (CCD or equivalent video cameras). Dumping stray light beams? * AR coating for 1064 nm and 532 nm * Wedge angle Details are described in ''Characteristics'' section. |
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| == General Description == | === Functions === Beams for * Transmission of IR/Green lasers * Optical Lever transmitter/receiver * Video camera * Illumination * Diagnostic * (Squeeze) * (Spare) |
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| == Naming Conventions == | === Naming Conventions === TBD |
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| == Viewport Locations == | === Locations === Here, the number of viewports required by each subsystem at each vacuum chamber is listed. ||<#FFFF00>Chamber Name||<#FFFF00>Type||<#FFFF00>Quantity||<#FFFF00>Purpose||<#FFFF00>Used By|| ||PRM||1064nm AR||1||REFL port||ISC|| ||PRM||!OpLev wavelength||2||!OpLev||AOS/SUS|| ||PRM ||Visible||1||CCD||Everyone|| ||BS ||1064nm AR||1||POX/POY beams||ISC|| ||BS ||!OpLev wavelength||2||Optical Lever||AOS/SUS|| ||BS ||Visible||1||CCD||Everyone|| == Requirements == TBD == Characteristics == TBD == Inspection plans == TBD == Procurement process and plans == TBD |
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| * [[https://dcc.ligo.org/cgi-bin/DocDB/ShowDocument?docid=8509|LIGO-T1000022-v4, Viewports Subsystem Requirements Document]] * [[https://dcc.ligo.org/cgi-bin/DocDB/ShowDocument?docid=12798|LIGO-T1000334-v1, Review Report Interferometer Sensing and Control Final Design]] |
Viewports (at Room Temperature)
Related subgroups: MIR, IOO, MIF, VAC, CRY, VIS...
Contents
Scope
This subsystem provides the optical viewports mounted on the vacuum chambers to pass the optical beams into or from the LCGT in-vacuum interferometer. The optical beams include...
The viewport subsystems that will be dedicated to the cryo-vacuum chambers for the future LCGT are NOT included in the scope of this subsystem so far.
Applicable Documents
- Spec. for vacuum chambers
- Optical Layout Drawing of the LCGT interferometer
- Length Sensing and Control doc
- Alignment Sensing and Control doc
- Optical lever doc
- CCD Monitor doc
- Any...
General Description
We can extract optical beams at the viewports from the interferometer inside the vacuum chamber. The optical beams are for length and alignment sensing and control scheme, optical levers for suspensions, and other monitoring devices (CCD or equivalent video cameras).
Dumping stray light beams?
- AR coating for 1064 nm and 532 nm
- Wedge angle
Details are described in Characteristics section.
Functions
Beams for
- Transmission of IR/Green lasers
- Optical Lever transmitter/receiver
- Video camera
- Illumination
- Diagnostic
- (Squeeze)
- (Spare)
Naming Conventions
TBD
Locations
Here, the number of viewports required by each subsystem at each vacuum chamber is listed.
Chamber Name |
Type |
Quantity |
Purpose |
Used By |
PRM |
1064nm AR |
1 |
REFL port |
ISC |
PRM |
OpLev wavelength |
2 |
OpLev |
AOS/SUS |
PRM |
Visible |
1 |
CCD |
Everyone |
BS |
1064nm AR |
1 |
POX/POY beams |
ISC |
BS |
OpLev wavelength |
2 |
Optical Lever |
AOS/SUS |
BS |
Visible |
1 |
CCD |
Everyone |
Requirements
TBD
Characteristics
TBD
Inspection plans
TBD
Procurement process and plans
TBD