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A New Explanation for Toroidal Spin-Up of a Field-Reversed Configuration

Toshiki TAKAHASHI, Hidefumi YAMAURA, Fusaki P. IIZIMA, Yoshiomi KONDOH, Tomohiko ASAI¹⁾, Tsutomu TAKAHASHI¹⁾, Yoshiki MATSUZAWA¹⁾, Taichi OKANO¹⁾, Yoichi HIRANO²⁾, Naoki MIZUGUCHI³⁾, Yukihiro TOMITA³⁾ and Shigeru INAGAKI³⁾

Department of Electronic Engineering, Gunma University

1)

College of Science and Technology, Nihon University

2)

National Institute of Advanced Science and Technology

3)

National Institute for Fusion Science

(Received 20 November 2006 / Accepted 7 March 2007 / Published 10 April 2007)

Abstract

A new explanation regarding the toroidal spin-up of a field-reversed configuration (FRC) is provided. A physical picture showing that the poloidal flux can convert directly to kinetic angular momentum is described. Through the use of an ion orbit calculation in resistively decaying FRC plasma, toroidal rotation at both the separatrix and the field-null is found to occur.

Copyright (c) 2007 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

field-reversed configuration, toroidal spin-up, resistive flux decay, canonical angular momentum, inductive electric field

DOI: 10.1585/pfr.2.008

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References

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This paper may be cited as follows:

Toshiki TAKAHASHI, Hidefumi YAMAURA, Fusaki P. IIZIMA, Yoshiomi KONDOH, Tomohiko ASAI, Tsutomu TAKAHASHI, Yoshiki MATSUZAWA, Taichi OKANO, Yoichi HIRANO, Naoki MIZUGUCHI, Yukihiro TOMITA and Shigeru INAGAKI, Plasma Fusion Res. 2, 008 (2007).