Basic requirements for a 1000-MW(electric) class tokamak fusion-fission hybrid reactor and its blanket concept

Akiyoshi Hatayama, Masatada Ogasawara, Michinori Yamauchi, Kunihiko Okano, Yuzo Fukai, Tomoaki Yoshida, Tadasu Takuma, Kenji Yamaji

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Plasma size and other basic performance parameters for 100-MW (electric) power production are calculated with the blanket energy multiplication factor, the M value, as a parameter. The calculational model is based on the International Thermonuclear Experimental Reactor (ITER) physics design guidelines and includes overall plant power flow. Plasma size decreases as the M value increases. However, the improvement in the plasma compactness and other basic performance parameters, such as the total plant power efficiency, becomes saturated above the M = 5 to 7 range. Thus, a value in the M = 5 to 7 range is a reasonable choice for 1000-MW(electric) hybrids. Typical plasma parameters for 1000-MW(electric) hybrids with a value of M = 7 are a major radius of R = 5.2 m, minor radius of a = 1.7 m, plasma current of Ip = 15 MA, and toroidal field on the axis of B0 = 5 T. The concept of a thermal fission blanket that uses light water as a coolant is selected as an attractive candidate for electricity-producing hybrids. An optimization study is carried out for this blanket concept. The result shows that a compact, simple structure with a uniform fuel composition for the fissile region is sufficient to obtain optimal conditions for suppressing the thermal power increase caused by fuel burnup. The maximum increase in the thermal power is +3.2%. The M value estimated from the neutronics calculations is approximately 7.0, which is confirmed to be compatible with the plasma requirement. These studies show that it is possible to use a tokamak fusion core with design requirements similar to those of ITER for a 1000-MW(electric) power reactor that uses existing thermal reactor technology for the blanket.

Original languageEnglish
Pages (from-to)27-45
Number of pages19
JournalFusion Technology
Volume26
Issue number1
Publication statusPublished - 1994 Aug

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fusion-fission hybrid reactors
blankets
Fusion reactions
Plasmas
requirements
turbogenerators
Experimental reactors
electric power
thermal reactors
reactor technology
reactor physics
Power plants
power reactors
light water
radii
plasma currents
coolants
void ratio
power efficiency
power plants

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Hatayama, A., Ogasawara, M., Yamauchi, M., Okano, K., Fukai, Y., Yoshida, T., ... Yamaji, K. (1994). Basic requirements for a 1000-MW(electric) class tokamak fusion-fission hybrid reactor and its blanket concept. Fusion Technology, 26(1), 27-45.

Basic requirements for a 1000-MW(electric) class tokamak fusion-fission hybrid reactor and its blanket concept. / Hatayama, Akiyoshi; Ogasawara, Masatada; Yamauchi, Michinori; Okano, Kunihiko; Fukai, Yuzo; Yoshida, Tomoaki; Takuma, Tadasu; Yamaji, Kenji.

In: Fusion Technology, Vol. 26, No. 1, 08.1994, p. 27-45.

Research output: Contribution to journalArticle

Hatayama, A, Ogasawara, M, Yamauchi, M, Okano, K, Fukai, Y, Yoshida, T, Takuma, T & Yamaji, K 1994, 'Basic requirements for a 1000-MW(electric) class tokamak fusion-fission hybrid reactor and its blanket concept', Fusion Technology, vol. 26, no. 1, pp. 27-45.
Hatayama A, Ogasawara M, Yamauchi M, Okano K, Fukai Y, Yoshida T et al. Basic requirements for a 1000-MW(electric) class tokamak fusion-fission hybrid reactor and its blanket concept. Fusion Technology. 1994 Aug;26(1):27-45.
Hatayama, Akiyoshi ; Ogasawara, Masatada ; Yamauchi, Michinori ; Okano, Kunihiko ; Fukai, Yuzo ; Yoshida, Tomoaki ; Takuma, Tadasu ; Yamaji, Kenji. / Basic requirements for a 1000-MW(electric) class tokamak fusion-fission hybrid reactor and its blanket concept. In: Fusion Technology. 1994 ; Vol. 26, No. 1. pp. 27-45.
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