[Table of Contents]

Plasma and Fusion Research

Volume 9, 3403089 (2014)

Regular Articles

LHD-Type Magnetic Configuration with Large Blanket Space
Tsuguhiro WATANABE, Nagato YANAGI and Akio SAGARA
National Institute for Fusion Science, Toki 509-5292, Japan
(Received 18 November 2013 / Accepted 25 April 2014 / Published 10 June 2014)

Abstract

We studied the optimization of the magnetic configuration for the LHD-type fusion energy reactor (FFHR). We propose thin and flat helical coil systems, which are partitioned to three blocks with independent current value control, to satisfy the following requirements: (1) sufficient blanket space and large plasma volume under the helical coils with appropriate major radius and (2) divertor legs with little disorder that turn to the back of the helical coils. The cross-section of the plasma boundary changes from elliptical to racetrack-type. By extending the coil height, the coil current density of the central block for helical coil is observed to decrease gradually.

Keywords

LHD, FFHR, configuration optimization, large blanket space

DOI: 10.1585/pfr.9.3403089

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References

  • [1] A. Sagara et al., Fusion Eng. Des. 87, 594 (2012).
  • [2] A. Sagara et al., J. Nucl. Mater. 248, 147 (1997).
  • [3] T. Goto et al., Nucl. Fusion 51, 083045 (2011).
  • [4] N. Ohyabu et al., Nucl. Fusion 34, 387 (1994).
  • [5] Y. Kozaki et al., Nucl. Fusion 49, 115011 (2009).
  • [6] N. Yanagi et al., Plasma Fusion Res. 5, S1026 (2010).
  • [7] T. Watanabe, Plasma Fusion Res. 7, 2403113 (2012).
  • [8] M. Yokoyama et al., Nucl. Fusion 40, 261 (2000).
  • [9] A.H. Boozer, Phys. Fluids 23, 904 (1980).
  • [10] L.P. Ku and A.H. Boozer, Nucl. Fusion 50, 125005 (2010).
  • [11] T. Watanabe, Plasma Fusion Res. 8, 2403072 (2013).

This paper may be cited as follows:

Tsuguhiro WATANABE, Nagato YANAGI and Akio SAGARA, Plasma Fusion Res. 9, 3403089 (2014).