Reflectometry for Density Fluctuation and Profile Measurements in TST-2

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概要

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• A reflectometer in Ka-band was designed, constructed and applied to the TST-2 spherical tokamak in order to detect density fluctuations induced by the radio frequency (RF) heating wave, and to measure the density profile. The optics of the reflectometer consists of two concave mirrors to make a small microwave beam spot inside the plasma. Using Kirchhoff integration, the parameters of the optics were optimized to achieve a high throughput (i.e. the ratio of the received to the launched powers) in various measurement conditions. Using the reflectometer, the density fluctuations in the frequency range of RF were detected and the electric field excited by RF (21 MHz/260 kW) was estimated to be about 1.3 kV/m.

• 社団法人 プラズマ・核融合学会の論文

著者

• Takase Yuichi

  Graduate School Of Frontier Sciences The Univ. Of Tokyo

• Ejiri Akira

  Graduate School Of Frontier Science University Of Tokyo

• Sasaki Makoto

  Graduate School Of Environmental Earth Science Hokkaido University

• OOSAKO Takuya

  Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan

• TOJO Hiroshi

  Graduate School of Frontier Sciences, The University of Tokyo

• YAMADA Takuma

  Research Institute for Applied Mechanics, Kyushu University

• MASUDA Tetsuya

  Graduate School of Frontier Sciences, The University of Tokyo

• SUGIYAMA Junichi

  Graduate School of Frontier Sciences, The University of Tokyo

• NUGA Hideo

  Graduate School of Science, The University of Tokyo

• SHIMADA Yoshiyuki

  Graduate School of Frontier Sciences, The University of Tokyo

• SUMITOMO Nobuyuki

  Graduate School of Science, The University of Tokyo

• TSUJIMURA Jiro

  Graduate School of Frontier Sciences, The University of Tokyo

• KAINAGA Soichiro

  Graduate School of Science, The University of Tokyo

• YAMADA Takuma

  Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan

• TORII Yuuki

  High Temperature Plasma Center, The University of Tokyo, Kashiwa 277-8568, Japan

• OOSAKO Takuya

  Graduate School of Frontier Sciences, The University of Tokyo

• TAKASE Yuichi

  Graduate School of Frontier Science, University Tokyo, Kashiwa 277-8561, Japan

• SHIMADA Yoshiyuki

  Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan

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