Plasma and Fusion Research
Volume 7, 2403113 (2012)
Regular Articles
- National Institute for Fusion Science, Toki 509-5292, Japan
Abstract
A new winding law for the continuous helical coils is proposed for Large Helical Device (LHD) type fusion reactors to satisfy the requirements for a wide blanket space and large plasma volume. Helical coils wound along the geodesic line of a torus with an elongated cross section can produce a magnetic configuration having a D-shaped magnetic surface with a magnetic well in the core region and high magnetic shear in the peripheral regions. The DT alpha particle confinement performance is greatly improved by increasing the elongation factor κ of the cross section of the winding frame for the helical coils. The results suggest that a smaller LHD-type fusion reactor can be realized.
Keywords
LHD, fusion reactor, helical system, geodesic winding
Full Text
References
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This paper may be cited as follows:
Tsuguhiro WATANABE, Plasma Fusion Res. 7, 2403113 (2012).