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Self-Consistent Pressure and Current Profiles in High-Beta D-³He Tokamak Reactors

Koichi UMEDA, Kozo YAMAZAKI, Tetsutarou OISHI, Hideki ARIMOTO and Tatsuo SHOJI

Department of energy engineering and science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan

(Received 8 December 2009 / Accepted 19 April 2010 / Published 10 December 2010)

Abstract

D-³He reactor has a great advantage of neutron-poor operation, but it requires higher-beta value and higher bootstrap current fraction than D-T reactor. In this paper, we investigated self-consistent plasma pressure and current profiles in the case of a positive magnetic shear mode (parabolic temperature profile) and a negative magnetic shear mode (ITB temperature profile) using TOTAL-T code including Cytran module. In a negative magnetic shear mode, toroidal beta value β_T ∼ 52.4 % and bootstrap current fraction f_bs ∼ 0.93 was obtained in a plasma with aspect ratio 1.77, plasma major radius 6.2 m, toroidal field 4.2 T and plasma current 49.3 MA.

Copyright (c) 2010 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

D-³He, negative magnetic shear, ITB, bootstrap current, high-beta value

DOI: 10.1585/pfr.5.S2030

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References

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This paper may be cited as follows:

Koichi UMEDA, Kozo YAMAZAKI, Tetsutarou OISHI, Hideki ARIMOTO and Tatsuo SHOJI, Plasma Fusion Res. 5, S2030 (2010).