Transition of Toroidal Alfvén Eigenmode to Global Alfvén Eigenmode in CHS Heliotron/Torsatron Plasmas Heated by Neutral Beam Injection

Manabu TAKECHI; Go MATSUNAGA; Kazuo TOI; Mitsutaka ISOBE; Takashi MINAMI; Kenji TANAKA; Shin NISHIMURA; Chihiro TAKAHASHI; Shoichi OKAMURA; Keisuke MATSUOKA

doi:10.1585/jspf.78.1273

Rapid Communications

Transition of Toroidal Alfvén Eigenmode to Global Alfvén Eigenmode in CHS Heliotron/Torsatron Plasmas Heated by Neutral Beam Injection

Manabu TAKECHI, Go MATSUNAGA, Kazuo TOI, Mitsutaka ISOBE, Takashi MINAMI, Kenji TANAKA, Shin NISHIMURA, Chihiro TAKAHASHI, Shoichi OKAMURA, Keisuke MATSUOKA

著者情報

Manabu TAKECHI
Department of Energy Engineering Science, Nagoya University
Go MATSUNAGA
Department of Energy Engineering Science, Nagoya University
Kazuo TOI
National Institute for Fusion Science
Mitsutaka ISOBE
National Institute for Fusion Science
Takashi MINAMI
National Institute for Fusion Science
Kenji TANAKA
National Institute for Fusion Science
Shin NISHIMURA
National Institute for Fusion Science
Chihiro TAKAHASHI
National Institute for Fusion Science
Shoichi OKAMURA
National Institute for Fusion Science
Keisuke MATSUOKA
National Institute for Fusion Science

キーワード: toroidal Alfvén eigenmode, global Alfvén eigenmode, eigenmode transition, rotational transform, helical plasma, tokamak plasma

ジャーナルフリー

2002 年 78 巻 12 号 p. 1273-1274

DOI https://doi.org/10.1585/jspf.78.1273

詳細

抄録

A transition of a core localized type toroidal Alfvén eigenmode with n = 1 toroidal mode number to two n = 1 global Alfvén eigenmodes was observed in NBI-heated plasmas in the Compact Helical System (CHS) heliotron torsatron. This transition phenomenon is interpreted based on the temporal evolution of the rotational transform near the plasma center caused by the increase in the beam-driven current.

責任著者(Corresponding author)

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