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Collection optics of JT-60SA edge Thomson scattering diagnostic
F A D'Isa1, A Fassina1, L Giudicotti1,2
1Consorzio RFX (CNR, ENEA, INFN, University of Padova, Acciaierie Venete SpA), C.so Stati Uniti 4, 35127 Padova, Italy.
The Review of Scientific Instruments
|August 21, 2024
Summary
The JT-60SA project uses advanced Thomson scattering diagnostics to measure plasma properties. This study details the compact, telecentric optics design for edge plasma measurements, crucial for fusion power plant development.
Area of Science:
- Nuclear Fusion Engineering
- Plasma Physics Diagnostics
Background:
- The JT-60SA project aims to advance fusion power plant technology, complementing ITER.
- Diagnostic systems are crucial for JT-60SA's mission, with Thomson Scattering (TS) being key.
- Edge plasma measurements are vital for understanding and controlling fusion reactions.
Purpose of the Study:
- To present the optomechanical design of the edge Thomson scattering optics assembly for JT-60SA.
- To detail the design features enabling required field of view and spatial resolution in limited space.
- To describe performance verification tests for the developed optics.
Main Methods:
- Comprehensive optomechanical design focusing on telecentricity and compactness.
- Development of collection optics for the edge TS system.
- Performance verification including focal plane identification, thermal cycling, and magnification tests.
Main Results:
- A telecentric and compact optics assembly was designed for the JT-60SA edge TS system.
- The design successfully addresses the challenges of limited space while meeting optical requirements.
- Initial tests confirmed the performance of the optics assembly.
Conclusions:
- The designed optics assembly is capable of fulfilling the requirements for edge plasma measurements on JT-60SA.
- This work contributes to the development of reliable diagnostics for future fusion power plants.
- The successful optomechanical design and testing pave the way for practical fusion energy.
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