40m Auxiliary Optics Support Design Requirements Document

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40m Auxiliary Optics SupportDesign Requirements
Document Conceptual Design

• Michael Smith
• 10/18/01

• Stray Light Control
• Initial Alignment System
• Optical Lever System
• Video Monitoring System

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Ghost Beam Naming Convention 1
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Ghost Beam Naming Convention 2
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Scattered Light Requirements
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Beam Dump/Baffle Optical Requirements
Table 4 SEI-mounted Beam Dump Optical
Requirements
Arm Cavity Baffle Optical Requirements
Table 6 Mode Cleaner Baffle Optical Requirements
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Initial Alignment System Requirements

• Angular positioning /- 0.1 mrad (ITM,
  ETM, BS, PRM, SRM)
• Transverse positioning /- 2 mm (ITM, ETM)
  /- 2 mm (BS, RM, SRM)
• Axial positioning /- 3 mm (ITM,
  ETM, BS, RM, FM)
  

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Initial Alignment System Physical Characteristics

• Theodolite / 3-D Coordinate Measuring System
• Transit Square
• Laser Autocollimator
• COS Autocollimator

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Optical Lever Projector
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Angle Sensitivity, Zoom Optical Lever Sensor
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Optical Lever, Etmx
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Optical Lever, ITMx
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Optical Lever, ITMy
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Optical Lever, PRM, BS, SRM
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Video Monitor for IMC Flat Mirrors
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Video Monitor for Itmy
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Video Monitor for PRM, BS, SRM
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Video Monitor for Etmx
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Scattered Light Noise Theory

• Noise/signal ratio
• Scattered light criteria
• Allocation factor
• Requirement

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Parameters for the K Values
Parameters for the K values
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K Values, Seismic Surfaces
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APS Photodetector Scatter

• Scattered light

• Incident power

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Beam Glint

• Glint power

Pg PiR?