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Mirror system for collecting Thomson-scattered light in a tangential direction
Applied Optics
|October 12, 2010
Summary
A novel optical system using Venetian blind mirrors collects Thomson-scattering light tangentially in tokamaks. This design enables viewing around tokamak vessel corners for improved plasma diagnostics.
Area of Science:
- Plasma Physics
- Optical Engineering
- Fusion Energy Research
Background:
- Thomson scattering is a key diagnostic for measuring electron temperature and density in fusion plasmas.
- Tangential viewing in tokamaks presents challenges due to vessel geometry and obstructions.
- Existing optical systems may have limitations in accessing specific viewing angles.
Purpose of the Study:
- To develop and present an innovative optical system for tangential Thomson scattering measurements.
- To overcome geometrical constraints in tokamak vessels for improved light collection.
- To detail the design and performance of a novel Venetian blind mirror system.
Main Methods:
- Design of a multi-mirror optical system with a Venetian blind configuration.
- Integration of the optical system for tangential light collection within a tokamak environment.
- Testing and evaluation of the system's performance, including light collection efficiency and optical path.
Main Results:
- Successful implementation of a tangential optical system capable of viewing around vessel corners.
- Demonstration of effective Thomson-scattering light collection using the Venetian blind mirror arrangement.
- Characterization of the system's design considerations and performance metrics.
Conclusions:
- The Venetian blind optical system provides a viable solution for tangential Thomson scattering in tokamaks.
- This innovative design enhances diagnostic capabilities by enabling access to previously obstructed viewing regions.
- The presented system offers a promising advancement for plasma diagnostics in fusion research.
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