Plasma and Fusion Research
Volume 10, 3402066 (2015)
Regular Articles
- IGSES, Kyushu University, 6-1 Kasuga-koen, Kasuga 816-8580, Japan
- 1)
- RIAM, Kyushu University, 6-1 Kasuga-koen, Kasuga 816-8580, Japan
- 2)
- Tokai University, 9-1-1 Toroku, Higashi-ku, Kumamoto 862-8652, Japan
- 3)
- RGPPE, Kyoto University, Nisikyo-ku, Kyoto 615-8540, Japan
- 4)
- DCSE, University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa 277-8561, Japan
Abstract
Comparison between non-inductive plasma current start-up using electron cyclotron resonance heating (ECRH) with and without fundamental (1st) resonance using 8.2-GHz microwave is experimentally performed on QUEST. Results of soft X-ray measurements in different energy ranges indicate significant difference in the number of current-carrying electrons with and without fundamental resonance. Numerical calculations show effective extendibility of electron energy in ECRH of fundamental resonance.
Keywords
spherical tokamak, plasma current start-up, electron cyclotron resonance heating, current-carrying electron, soft X-ray
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This paper may be cited as follows:
Hiroki MIURA, Kazuaki HANADA, Hideki ZUSHI, Kazuo NAKAMURA, Akihide FUJISAWA, Hiroshi IDEI, Yoshihiko NAGASHIMA, Makoto HASEGAWA, Hisatoshi NAKASHIMA, Shoji KAWASAKI, Aki HIGASHIJIMA, Osamu MITARAI, Atsushi FUKUYAMA and Yuichi TAKASE, Plasma Fusion Res. 10, 3402066 (2015).