Experimental Conditions for Electron Bernstein Wave Heating Using EC Waves Injected from High-Field Side in CHS

Yasuo YOSHIMURA; Kazunobu NAGASAKI; Sergi FERRANDO-MARGALET; Tsuyoshi AKIYAMA; Mitsutaka ISOBE; Akihiro SHIMIZU; Chihiro SUZUKI; Chihiro TAKAHASHI; Kenichi NAGAOKA; Shin NISHIMURA; Takashi MINAMI; Keisuke MATSUOKA; Shoichi OKAMURA; CHS group; Shin KUBO; Takashi SHIMOZUMA; Hiroe IGAMI; Hiromi TAKAHASHI; Takashi MUTOH

doi:10.1585/pfr.3.S1076

Regular Articles

Experimental Conditions for Electron Bernstein Wave Heating Using EC Waves Injected from High-Field Side in CHS

Yasuo YOSHIMURA, Kazunobu NAGASAKI, Sergi FERRANDO-MARGALET, Tsuyoshi AKIYAMA, Mitsutaka ISOBE, Akihiro SHIMIZU, Chihiro SUZUKI, Chihiro TAKAHASHI, Kenichi NAGAOKA, Shin NISHIMURA, Takashi MINAMI, Keisuke MATSUOKA, Shoichi OKAMURA, CHS group, Shin KUBO, Takashi SHIMOZUMA, Hiroe IGAMI, Hiromi TAKAHASHI, Takashi MUTOH

Author information

Yasuo YOSHIMURA
National Institute for Fusion Science, Toki 509-5292, Japan
Kazunobu NAGASAKI
Institute of Advanced Energy, Kyoto University, Uji 611-0011, Japan
Sergi FERRANDO-MARGALET
National Institute for Fusion Science, Toki 509-5292, Japan
Tsuyoshi AKIYAMA
National Institute for Fusion Science, Toki 509-5292, Japan
Mitsutaka ISOBE
National Institute for Fusion Science, Toki 509-5292, Japan
Akihiro SHIMIZU
National Institute for Fusion Science, Toki 509-5292, Japan
Chihiro SUZUKI
National Institute for Fusion Science, Toki 509-5292, Japan
Chihiro TAKAHASHI
National Institute for Fusion Science, Toki 509-5292, Japan
Kenichi NAGAOKA
National Institute for Fusion Science, Toki 509-5292, Japan
Shin NISHIMURA
National Institute for Fusion Science, Toki 509-5292, Japan
Takashi MINAMI
National Institute for Fusion Science, Toki 509-5292, Japan
Keisuke MATSUOKA
National Institute for Fusion Science, Toki 509-5292, Japan
Shoichi OKAMURA
National Institute for Fusion Science, Toki 509-5292, Japan
CHS group
National Institute for Fusion Science, Toki 509-5292, Japan
Shin KUBO
National Institute for Fusion Science, Toki 509-5292, Japan
Takashi SHIMOZUMA
National Institute for Fusion Science, Toki 509-5292, Japan
Hiroe IGAMI
National Institute for Fusion Science, Toki 509-5292, Japan
Hiromi TAKAHASHI
National Institute for Fusion Science, Toki 509-5292, Japan
Takashi MUTOH
National Institute for Fusion Science, Toki 509-5292, Japan

Keywords: electron Bernstein wave, EBW, slow X-B, high-density plasma heating, high-field side injection, ECH, CHS

JOURNAL FREE ACCESS

2008 Volume 3 Pages S1076

DOI https://doi.org/10.1585/pfr.3.S1076

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Abstract

In the compact helical system (CHS), electron heating by electron Bernstein waves (EBWs) was experimentally investigated to study a technique for high-density plasma heating over cutoff density. The EBWs are excited through a mode conversion process by X-mode waves injected to plasmas from the high-field side. In the experiment, within the range of an oblique EC-wave beam injection angle, evident heating effect was observed. The dependences of the heating effect on the wave's toroidal injection direction and polarization show that the absorption of the mode-converted EBWs should be the cause of the plasma heating effect.

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