Study of a compact reversed shear Tokamak reactor

Kunihiko Okano, Y. Asaoka, R. Hiwatari, N. Inoue, Y. Murakami, Y. Ogawa, K. Tokimatsu, K. Tomabechi, T. Yamamoto, T. Yoshida

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

A reversed shear configuration, which was observed recently in some Tokamak experiments, might have a possibility to realize compact and cost-competitive Tokamak reactors. In this study, a compact (low cost) commercial reactor based on the shear reversed high beta equilibrium with βN = 5.5, is considered, namely the Compact Reversed Shear Tokamak, CREST-1. The CREST-1 is designed with a moderate aspect ratio (R/a = 3.4), which will allow us to experimentally develop this CREST concept by ITER. This will be very advantageous with regard to the fusion development strategy. The current profile for the reversed shear operation is sustained and controlled in steady state by bootstrap (88%), beam and rf driven currents, which are calculated by a neo-classical model code in 3D geometry. The MHD stability has been checked by an ideal MHD stability analysis code (ERATO) and it has been confirmed that the ideal low n kink, ballooning and Mercier modes are stable while a closed conductive shell is required for stability. Such a compact Tokamak can be cost-competitive as an electric power source in the 21st century and it is one possible scenario in realizing a commercial fusion reactor beyond the ITER project.

Original languageEnglish
Pages (from-to)511-517
Number of pages7
JournalFusion Engineering and Design
Volume41
Issue number1-4
Publication statusPublished - 1998 Sep 1
Externally publishedYes

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Magnetohydrodynamics
Costs
Fusion reactors
Aspect ratio
Fusion reactions
Geometry
Experiments

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Nuclear Energy and Engineering
  • Civil and Structural Engineering
  • Mechanical Engineering

Cite this

Okano, K., Asaoka, Y., Hiwatari, R., Inoue, N., Murakami, Y., Ogawa, Y., ... Yoshida, T. (1998). Study of a compact reversed shear Tokamak reactor. Fusion Engineering and Design, 41(1-4), 511-517.

Study of a compact reversed shear Tokamak reactor. / Okano, Kunihiko; Asaoka, Y.; Hiwatari, R.; Inoue, N.; Murakami, Y.; Ogawa, Y.; Tokimatsu, K.; Tomabechi, K.; Yamamoto, T.; Yoshida, T.

In: Fusion Engineering and Design, Vol. 41, No. 1-4, 01.09.1998, p. 511-517.

Research output: Contribution to journalArticle

Okano, K, Asaoka, Y, Hiwatari, R, Inoue, N, Murakami, Y, Ogawa, Y, Tokimatsu, K, Tomabechi, K, Yamamoto, T & Yoshida, T 1998, 'Study of a compact reversed shear Tokamak reactor', Fusion Engineering and Design, vol. 41, no. 1-4, pp. 511-517.
Okano K, Asaoka Y, Hiwatari R, Inoue N, Murakami Y, Ogawa Y et al. Study of a compact reversed shear Tokamak reactor. Fusion Engineering and Design. 1998 Sep 1;41(1-4):511-517.
Okano, Kunihiko ; Asaoka, Y. ; Hiwatari, R. ; Inoue, N. ; Murakami, Y. ; Ogawa, Y. ; Tokimatsu, K. ; Tomabechi, K. ; Yamamoto, T. ; Yoshida, T. / Study of a compact reversed shear Tokamak reactor. In: Fusion Engineering and Design. 1998 ; Vol. 41, No. 1-4. pp. 511-517.
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