Plasma and Fusion Research
Volume 7, 1202153 (2012)
Rapid Communications
- Center for Fusion Science, Southwestern Institute of Physics, P.O.Box 432, Chengdu, Sichuan, 610041, China
- 1)
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
Abstract
Plasma breakdown using electron cyclotron waves with toroidally inclined launch has been studied experimentally in the stellarator/heliotron device, Heliotron J. The experimental results show that the second harmonic X-mode breakdown has a weak dependence on the parallel refractive index, N∥, for the small toroidal injection angle range. When the fundamental resonance exists inside the vacuum chamber, the breakdown occurs quickly, independent of the toroidal injection angle.
Keywords
breakdown, ECH, stellarator/heliotron, Heliotron J
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This paper may be cited as follows:
Bo LU, Kazunobu NAGASAKI, Tohru MIZUUCHI, Hiroyuki OKADA, Takashi MINAMI, Shinji KOBAYASHI, Satoshi YAMAMOTO, Shinsuke OHSHIMA, Shigeru KONOSHIMA and Fumimichi SANO, Plasma Fusion Res. 7, 1202153 (2012).