Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Quasi-optical design and analysis of a remote steering launcher for CFETR ECRH system

  • Zhang Chao (College of Physics and Optoelectronic Engineering, Shenzhen University) ;
  • Xiaojie Wang (Institute of Plasma Physics, Chinese Academy of Sciences) ;
  • Dajun Wu (Institute of Plasma Physics, Chinese Academy of Sciences) ;
  • Yunying Tang (Institute of Plasma Physics, Chinese Academy of Sciences) ;
  • Hanlin Wang (Institute of Plasma Physics, Chinese Academy of Sciences) ;
  • Dingzhen Li (Institute of Plasma Physics, Chinese Academy of Sciences) ;
  • Fukun Liu (Institute of Plasma Physics, Chinese Academy of Sciences) ;
  • Muquan Wu (College of Physics and Optoelectronic Engineering, Shenzhen University) ;
  • Peiguang Yan (College of Physics and Optoelectronic Engineering, Shenzhen University) ;
  • Xiang Gao (College of Physics and Optoelectronic Engineering, Shenzhen University) ;
  • Jiangang Li (College of Physics and Optoelectronic Engineering, Shenzhen University)
  • Received : 2023.10.20
  • Accepted : 2023.12.04
  • Published : 2024.05.25
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Abstract

In order to optimize the operational safety and reliability of the upper launcher for the CFETR ECRH system, a design of the launcher for NTM control based on the remote steering concept is currently being carried out for comparison with the front steering equivalent. This paper presents the layout design and analysis of the quasi-optical system in the remote steering launcher. A 3D visual quasi-optical design tool has been developed for the quasi-optical system, which can parameterize modeling, perform general astigmatic beam calculation and show the accurate beam propagation path in the upper port. Three identical sets of quasi-optical modules are arranged in the launcher, and each one consists of two fixed double-curvature focusing mirrors, which focus and reflect the steering beams (- 12°-12°) from two square corrugated waveguides. The beam characteristics at the resonance layer are described, and the average beam radius is < 100 mm. The peak head loads on the surfaces of the two fixed mirrors are 1.63 MW/m2 and 1.52 MW/m2. The position and size of the beam channel in the blanket are obtained, and the opening apertures on the launcher-facing and plasma-facing sides of the blanket module are 0.54 m2 and 0.4 m2, respectively.

Keywords

Acknowledgement

This work has been supported by the Comprehensive Research Facility for Fusion Technology Program of China under Contract No. 2018-000052-73-01-001228, and the National Key R&D Program of China under Grant Nos. 2022YFE03070000, 2022YFE03070004.

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