Development of Electron Bernstein Emission Diagnostic for Heliotron J

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<p>Electron Bernstein Emission (EBE) diagnostic system using Ordinary (O) - eXtraordinary (X) - Bernstein (B) mode conversion process has been developed for determining electron temperature profiles at overdense plasmas in a helical-axis heliotron device, Heliotron J. Ray-tracing calculation results show that the O-X mode conversion window is accessible with a current ECH/ECCD launcher and transmission system. The EBW radiation from the core region is expected to be measurable by adjusting the magnetic field strength. Effect of density fluctuation on O-X mode conversion efficiency is also discussed. Based on the calculations, a multi-channel radiometer of Ka-band range has been designed, assembled and tested.</p>

収録刊行物

  • Plasma and Fusion Research

    Plasma and Fusion Research 11 (0), 2402095-2402095, 2016

    一般社団法人 プラズマ・核融合学会

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