Experimental Results for Electron Bernstein Wave Heating in the Large Helical Device

Hiroe IGAMI; Shin KUBO; Takashi SHIMOZUMA; Yasuo YOSHIMURA; Hiromi TAKAHASHI; Hiroshi IDEI; Masaki NISHIURA; Shinya OGASAWARA; Ryohei MAKINO; Ryuhei KUMAZAWA; Takashi MUTOH; Akio SAGARA; Takuya GOTO

doi:10.1585/pfr.7.2402110

Regular Articles

Experimental Results for Electron Bernstein Wave Heating in the Large Helical Device

Hiroe IGAMI, Shin KUBO, Takashi SHIMOZUMA, Yasuo YOSHIMURA, Hiromi TAKAHASHI, Hiroshi IDEI, Masaki NISHIURA, Shinya OGASAWARA, Ryohei MAKINO, Ryuhei KUMAZAWA, Takashi MUTOH, Akio SAGARA, Takuya GOTO

Author information

Hiroe IGAMI
National Institute for Fusion Science
Shin KUBO
National Institute for Fusion Science
Takashi SHIMOZUMA
National Institute for Fusion Science
Yasuo YOSHIMURA
National Institute for Fusion Science
Hiromi TAKAHASHI
National Institute for Fusion Science
Hiroshi IDEI
Research Institute for Applied Mechanics, Kyushu University
Masaki NISHIURA
National Institute for Fusion Science
Shinya OGASAWARA
Department of Energy and Technology, Nagoya University
Ryohei MAKINO
Department of Energy and Technology, Nagoya University
Ryuhei KUMAZAWA
National Institute for Fusion Science
Takashi MUTOH
National Institute for Fusion Science
Akio SAGARA
National Institute for Fusion Science
Takuya GOTO
National Institute for Fusion Science

Keywords: electron cyclotron heating, electron Bernstein wave, mode conversion process, high-density operation, heating in fusion device

JOURNAL FREE ACCESS

2012 Volume 7 Pages 2402110

DOI https://doi.org/10.1585/pfr.7.2402110

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Abstract

Electron cyclotron heating (ECH) using electron Bernstein waves (EBWs) was studied in the large helical device (LHD). Oblique launching of the slow extraordinary (SX-) mode from the high field side and oblique launching of the ordinary (O-) mode from the low field side were adopted to excite EBWs in the LHD by using electron cyclotron (EC) wave antennas installed apart from the plasma surface. Increases in the stored energy and electron temperature were observed for both cases of launching. These launching methods for ECH using EBWs (EBWH) is promising for high-density operation in future helical fusion devices instead of conventional ECH by normal electromagnetic modes.

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