[Table of Contents]

Plasma and Fusion Research

Volume 5, S2022 (2010)

Regular Articles

Helical Pitch Parameter Dependency of High Beta Equilibrium of Helical Plasmas
Tsuguhiro WATANABE and Hitoshi HOJO1)
National Institute for Fusion Science,322-6 Oroshi-cho, Toki 509-5292, Japan
Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
(Received 7 December 2009 / Accepted 25 March 2010 / Published 10 December 2010)


The helical pitch parameter (γ) dependency of equilibrium and the stability of the high beta plasma in the LHD type magnetic configuration is studied numerically. It is confirmed that the small γ configurations are favorable for the LHD-type fusion reactors in the point of robustness of high beta equilibrium, compatibility of easy ignition and high output power of core plasma, in addition to a sufficient space for blankets.


LHD, high beta, stability, equilibrium

DOI: 10.1585/pfr.5.S2022


  • [1] S. Imagawa, A. Sagara and Y. Kozaki, Plasma Fusion Res. 3, S1050 (2008).
  • [2] T. Watanabe et al., Nucl. Fusion 46, 291 (2006).
  • [3] G. Bateman, MHD Instabilities (MIT Press, Cambridge, Massachusetts, and London, England, 1980) p.38.
  • [4] T. Watanabe and H. Hojo, J. Plasma Fusion Res. Ser. 5, 487 (2003).

This paper may be cited as follows:

Tsuguhiro WATANABE and Hitoshi HOJO, Plasma Fusion Res. 5, S2022 (2010).