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

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...

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Bibliographic Details
Published in:Plasma and Fusion Research 2012/09/13, Vol.7, pp.2402110-2402110
Main Authors: IGAMI, Hiroe, KUBO, Shin, SHIMOZUMA, Takashi, YOSHIMURA, Yasuo, TAKAHASHI, Hiromi, IDEI, Hiroshi, NISHIURA, Masaki, OGASAWARA, Shinya, MAKINO, Ryohei, KUMAZAWA, Ryuhei, MUTOH, Takashi, SAGARA, Akio, GOTO, Takuya
Format: Article
Language:English
Subjects:
electron Bernstein wave
electron cyclotron heating
heating in fusion device
high-density operation
mode conversion process
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Summary: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.
ISSN:1880-6821
1880-6821
DOI:10.1585/pfr.7.2402110