[Table of Contents]

Plasma and Fusion Research

Volume 9, 3402031 (2014)

Regular Articles

Comprehensive Analysis on the Role of Helical Movement of the Magnetic Axis in Stellarators
Shoichi OKAMURA
National Institute for Fusion Science, Toki 509-5292, Japan
(Received 21 November 2013 / Accepted 25 February 2014 / Published 7 May 2014)

Abstract

The physical confinement properties of stellarators are analyzed for the neo-classical transport and the magnetic well. Three typical concepts of stellarators (LHD, Wendelstein 7-X and TJ-II) are compared in terms of the helical movement of cross sections of the last closed magnetic surface. It is shown that this geometric element strongly determines the confinement properties of both non-planar axis and planar axis stellarators.

Keywords

stellarator, magnetic configuration, helical axis, non-planar axis, Fourier modes, boundary shape, magnetic axis

DOI: 10.1585/pfr.9.3402031

Full Text

PDF format (634Kbytes) PDF Download

References

  • [1] S. Okamura, Contrib. Plasma Phys. 50, 562 (2010).
  • [2] S. Okamura, Plasma Phys. Control. Fusion 55, 032002 (2013).
  • [3] S. Hirshman et al., Comput. Phys. Commun. 43, 143 (1986).
  • [4] P.R. Garabedian, Phys. Plasmas 4, 1617 (1997).
  • [5] V.V. Nemov and S.V. Kasilov, Phys. Plasma 6, 4622 (1999).
  • [6] F. Castejon, private communiction.

This paper may be cited as follows:

Shoichi OKAMURA, Plasma Fusion Res. 9, 3402031 (2014).