Differences between revisions 50 and 51

Viewports (at Room Temperature)

Related subgroups: MIR, IOO, MIF, VAC, CRY, VIS...

Contents

Viewports (at Room Temperature)

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

-  ⇤ ← Revision 50 as of 2011-07-07 02:36:32 → 
  Size: 1991
  Editor: TomotadaAkutsu
  Comment:
+   ← Revision 51 as of 2011-09-12 16:11:28 → ⇥
  Size: 2420
  Editor: YoichiAso
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
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- * BS chamber
 *
+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||