[Table of Contents]

Plasma and Fusion Research

Volume 6, 2402144 (2011)

Regular Articles

Effects of Magnetic Islands on Poloidal Flow in TU-Heliac
Yu SATO, Sumio KITAJIMA, Yasuhiro SUZUKI1), Takanori AMBO, Keiichi ISHII, Mamoru KANNO, Jo TACHIBANA, Shigeru INAGAKI1), Masayuki YOKOYAMA2), Hiromi TAKAHASHI1), Masakazu TAKAYAMA3), Atsushi OKAMOTO and Mamiko SASAO
Department of Quantum Science and Energy Engineering, Tohoku University, Sendai 980-8579, Japan
1)
National Institute for Fusion Science, Toki 509-5292, Japan
2)
Research Institute for Applied Mechanics, Kyusyu University, Kasuga 816-8580, Japan
3)
Department of Electronics and Information Systems, Akita Prefectural University, Akita 015-0055, Japan
(Received 22 December 2010 / Accepted 4 August 2011 / Published 11 November 2011)

Abstract

The Tohoku University Heliac (TU-Heliac) surveyed the effects of island width on poloidal plasma flow. We determine that poloidal flow is driven externally by hot cathode biasing and an m = 3 magnetic island was produced by two pairs of external perturbation field coils. The electrode current required for poloidal flow at the plasma periphery jumping point increases with island width expansion and shows weak dependency at the core region of the plasma. These dependencies suggest that the magnetic island located at the plasma periphery affects poloidal flow as a drag term.

Keywords

stellarator, heliac, magnetic island, perturbation field, electrode bias

DOI: 10.1585/pfr.6.2402144

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This paper may be cited as follows:

Yu SATO, Sumio KITAJIMA, Yasuhiro SUZUKI, Takanori AMBO, Keiichi ISHII, Mamoru KANNO, Jo TACHIBANA, Shigeru INAGAKI, Masayuki YOKOYAMA, Hiromi TAKAHASHI, Masakazu TAKAYAMA, Atsushi OKAMOTO and Mamiko SASAO, Plasma Fusion Res. 6, 2402144 (2011).