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Journal Articles

Development of multi-purpose MW gyrotrons for fusion devices

Minami, Ryutaro*; Kariya, Tsuyoshi*; Imai, Tsuyoshi*; Numakura, Tomoharu*; Endo, Yoichi*; Nakabayashi, Hidetaka*; Eguchi, Taku*; Shimozuma, Takashi*; Kubo, Shin*; Yoshimura, Yasuo*; et al.

Nuclear Fusion, 53(6), p.063003_1 - 063003_7, 2013/06

Journal Articles

Development of multi-purpose MW gyrotrons for fusion devices

Minami, Ryutaro*; Kariya, Tsuyoshi*; Imai, Tsuyoshi*; Numakura, Tomoharu*; Endo, Yoichi*; Nakabayashi, Hidetaka*; Eguchi, Taku*; Shimozuma, Takashi*; Kubo, Shin*; Yoshimura, Yasuo*; et al.

Nuclear Fusion, 53(6), p.063003_1 - 063003_7, 2013/06

 Times Cited Count:12 Percentile:37.92(Physics, Fluids & Plasmas)

Oral presentation

ICRF waves for plasma diagnostics in GAMMA 10 and JT-60U

Ichimura, Makoto*; Yamaguchi, Yusuke*; Nemoto, Kenju*; Katano, Makoto*; GAMMA10 Group*; Ishikawa, Masao*; Moriyama, Shinichi; Suzuki, Takahiro

no journal, , 

The measurement of fusion product (FP) ICEs will become a significant diagnostic tool for fusion reactions. The precise study of the excitation mechanism is important for future burning plasma experiments. In strong ICRF heating experiments on the GAMMA 10 tandem mirror, plasmas with a strong temperature anisotropy have been formed when the resonance layer exists near the mid-plane of the central cell. In a typical discharge, Alfven-ion-cyclotron (AIC) modes are spontaneously excited due to such a strong temperature anisotropy. On the while, the injection of low power ICRF waves into the plasma as active diagnostics has been tested in GAMMA 10. A wide band ICRF probe system was constructed. In the present experimental conditions, the inhomogeneity scale length of the plasma and the magnetic field configuration is in the same order of the wavelength. Wave excitation is strongly affected by the boundary conditions. The waves excited in the plasma are detected with a magnetic probe. In the presentation, the experimental results of the ICRF probe system in GAMMA 10 for active diagnostics and the observation of ICEs in JT-60U for passive diagnostics are reported.

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