Compact reversed shear tokamak reactor with a superheated steam cycle

K. Okano; Y. Asaoka; T. Yoshida; M. Furuya; K. Tomabechi; Y. Ogawa; N. Sekimura; R. Hiwatari; T. Yamamoto; T. Ishikawa; Y. Fukai; A. Hatayama; N. Inoue; A. Kohyama; K. Shinya; Y. Murakami; I. Senda; S. Yamazaki; S. Mori; J. Adachi; M. Takemoto

doi:10.1088/0029-5515/40/3Y/326

Compact reversed shear tokamak reactor with a superheated steam cycle

K. Okano^*, Y. Asaoka, T. Yoshida, M. Furuya, K. Tomabechi, Y. Ogawa, N. Sekimura, R. Hiwatari, T. Yamamoto, T. Ishikawa, Y. Fukai, A. Hatayama, N. Inoue, A. Kohyama, K. Shinya, Y. Murakami, I. Senda, S. Yamazaki, S. Mori, J. AdachiM. Takemoto

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

48 Citations (Scopus)

Abstract

The compact reversed shear tokamak CREST is a cost competitive reactor concept based on a reversed shear high β plasma and water cooled ferritic steel components. The moderate aspect ratio A = 3.4 and the elongation κ = 2.0 of CREST are very similar to the case of the ITER advanced mode plasma. Presentation of such a concept based on the ITER project should be worth while for formulating a fusion development strategy. The achievement of a competitive cost of electricity (COE) is the first priority for electric power industries. High β and high thermal efficiency are the most effective parameters for achieving a competitive COE. In order to achieve a high efficiency power plant, a superheated steam cycle has been adopted which permits a high thermal efficiency (η = 41%). Current profile control and high speed plasma rotation by neutral beam current drive stabilize the ideal MHD activity up to the Troyon coefficient β_N = 5.5. A cost assessment has shown that CREST could generate about 1.16 GW(e) electric power at a competitive cost.

Original language	English
Pages (from-to)	635-646
Number of pages	12
Journal	Nuclear Fusion
Volume	40
Issue number	SPEC. ISS. 3
DOIs	https://doi.org/10.1088/0029-5515/40/3Y/326
Publication status	Published - 2000
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics
Condensed Matter Physics

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Okano, K., Asaoka, Y., Yoshida, T., Furuya, M., Tomabechi, K., Ogawa, Y., Sekimura, N., Hiwatari, R., Yamamoto, T., Ishikawa, T., Fukai, Y., Hatayama, A., Inoue, N., Kohyama, A., Shinya, K., Murakami, Y., Senda, I., Yamazaki, S., Mori, S., ... Takemoto, M. (2000). Compact reversed shear tokamak reactor with a superheated steam cycle. Nuclear Fusion, 40(SPEC. ISS. 3), 635-646. https://doi.org/10.1088/0029-5515/40/3Y/326

Okano, K, Asaoka, Y, Yoshida, T, Furuya, M, Tomabechi, K, Ogawa, Y, Sekimura, N, Hiwatari, R, Yamamoto, T, Ishikawa, T, Fukai, Y, Hatayama, A, Inoue, N, Kohyama, A, Shinya, K, Murakami, Y, Senda, I, Yamazaki, S, Mori, S, Adachi, J & Takemoto, M 2000, 'Compact reversed shear tokamak reactor with a superheated steam cycle', Nuclear Fusion, vol. 40, no. SPEC. ISS. 3, pp. 635-646. https://doi.org/10.1088/0029-5515/40/3Y/326

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abstract = "The compact reversed shear tokamak CREST is a cost competitive reactor concept based on a reversed shear high β plasma and water cooled ferritic steel components. The moderate aspect ratio A = 3.4 and the elongation κ = 2.0 of CREST are very similar to the case of the ITER advanced mode plasma. Presentation of such a concept based on the ITER project should be worth while for formulating a fusion development strategy. The achievement of a competitive cost of electricity (COE) is the first priority for electric power industries. High β and high thermal efficiency are the most effective parameters for achieving a competitive COE. In order to achieve a high efficiency power plant, a superheated steam cycle has been adopted which permits a high thermal efficiency (η = 41%). Current profile control and high speed plasma rotation by neutral beam current drive stabilize the ideal MHD activity up to the Troyon coefficient βN = 5.5. A cost assessment has shown that CREST could generate about 1.16 GW(e) electric power at a competitive cost.",

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AU - Ogawa, Y.

AU - Sekimura, N.

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AU - Yamamoto, T.

AU - Ishikawa, T.

AU - Fukai, Y.

AU - Hatayama, A.

AU - Inoue, N.

AU - Kohyama, A.

AU - Shinya, K.

AU - Murakami, Y.

AU - Senda, I.

AU - Yamazaki, S.

AU - Mori, S.

AU - Adachi, J.

AU - Takemoto, M.

PY - 2000

Y1 - 2000

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Compact reversed shear tokamak reactor with a superheated steam cycle

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