Triggering Instability of Sawtooth Crash in NBI-Heated Plasmas of CHS Heliotron/Torsatron

Shoji TAKAGI; Kazuo TOI; Sadayoshi MURAKAMI; Go MATSUNAGA; Shin NISHIMURA; Kenji TANAKA; Manabu TAKECHI; Mitsutaka ISOBE; Keisuke MATSUOKA; Takashi MINAMI; Shoichi OKAMURA; Masaki OSAKABE; Chihiro TAKAHASHI; Yasuo YOSHIMURA; CHS Group

doi:10.1585/jspf.78.1275

Rapid Communications

Triggering Instability of Sawtooth Crash in NBI-Heated Plasmas of CHS Heliotron/Torsatron

Shoji TAKAGI, Kazuo TOI, Sadayoshi MURAKAMI, Go MATSUNAGA, Shin NISHIMURA, Kenji TANAKA, Manabu TAKECHI, Mitsutaka ISOBE, Keisuke MATSUOKA, Takashi MINAMI, Shoichi OKAMURA, Masaki OSAKABE, Chihiro TAKAHASHI, Yasuo YOSHIMURA, CHS Group

著者情報

Shoji TAKAGI
Department of Energy Engineering and Science, Nagoya University
Kazuo TOI
National Institute for Fusion Science
Sadayoshi MURAKAMI
National Institute for Fusion Science
Go MATSUNAGA
National Institute for Fusion Science
Shin NISHIMURA
National Institute for Fusion Science
Kenji TANAKA
National Institute for Fusion Science
Manabu TAKECHI
Naka Fusion Research Establishment, Japan Atomic Energy Research Institute
Mitsutaka ISOBE
National Institute for Fusion Science
Keisuke MATSUOKA
National Institute for Fusion Science
Takashi MINAMI
National Institute for Fusion Science
Shoichi OKAMURA
National Institute for Fusion Science
Masaki OSAKABE
National Institute for Fusion Science
Chihiro TAKAHASHI
National Institute for Fusion Science
Yasuo YOSHIMURA
National Institute for Fusion Science
CHS Group
National Institute for Fusion Science

キーワード: CHS, sawtooth, annular crash, fishbone-like burst mode, interchange mode

ジャーナルフリー

2002 年 78 巻 12 号 p. 1275-1277

DOI https://doi.org/10.1585/jspf.78.1275

詳細

抄録

The triggering instability of the annular crash observed in NBI-heated plasmas of the CHS heliotron/torsatron is investigated. Two types of m~2/n = 1 magnetic fluctuations, fishbone-like burst mode and low frequency ideal/resistive interchange mode, respectively, grow just before the crash. Time evolution of the amplitude and phase inversion radius of these modes indicate that the low frequency interchange mode is the main triggering instability of the sawtooth crash in CHS.

責任著者(Corresponding author)

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