Multidisciplinary optimization of the waveguide transmission line for ITER HFS reflectometry

• Published in: Fusion engineering and design 2021-07, Vol.168, p.112406, Article 112406
• Main Authors: Novokshenov, A., Nemov, A., Shelukhin, D., Lukyanov, V., Gorbunov, A., Vershkov, V.
• Format: Article
• Language: English
• Subjects: Algorithms; Design optimization; Diagnostic systems; HFS-Reflectometry; Matlab; Mechanical analysis; Nuclear research; Optimization; Parametric optimization; Reflectometry; Signal losses; Structural criteria; Thermal loads; Transmission lines; Waveguides; Waveguides path
• ISSN: 0920-3796; 1873-7196
• DOI: 10.1016/j.fusengdes.2021.112406

•Bend optimization should take into account signal losses calculation.•Bend should be flexible to withstand interface loads.•New design of the HFS-Reflectometry waveguide line was developed. The research is devoted to the application of parametric optimization methods to the design of the waveguide line of ITER High Field Side Reflectometry (HFSR) diagnostic system. This waveguide line in the Interspace and Port Cell zones, on the one hand, must provide enough flexibility of the structure to withstand interface mechanical loads, and on the other hand, must ensure low signal losses. In order to satisfy these two contradicting requirements, an optimization problem was formulated and solved. Two different parametric optimization algorithms were used in conjunction with MATLAB and ANSYS software to find a reasonable design of the HFSR waveguide. MATLAB was used to construct the bend path with the minimal signal losses, and ANSYS was used to calculate the mechanical response of the constructed waveguide to the applied loads.