Journal ArticleDOI
Improved tokamak concept focusing on easy maintenance
Satoshi Nishio,Shuzo Ueda,Isao Aoki,R. Kurihara,T. Kuroda,H. Miura,Tomoaki Kunugi,Yasushi Seki,Takashi Nagashima,M. Ohta,Adachi Junichi,S. Yamazak,Kawaguchi Ichiro,T. Hashimoto,K. Shinya,Y. Murakami,Haruhiko Takase,T. Nakamura +17 more
TLDR
In this paper, a torus system is radially divided into equal sectors and each sector forms an assembly unit, all the piping and feeder systems are extracted to the spacious torus central region.About:
This article is published in Fusion Engineering and Design.The article was published on 1998-09-01. It has received 66 citations till now. The article focuses on the topics: Magnetic confinement fusion & Tokamak.read more
Citations
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Current status and critical issues for development of SiC composites for fusion applications
Yutai Katoh,Lance Lewis Snead,Charles H. Henager,Akira Hasegawa,Akira Kohyama,B. Riccardi,Hans Hegeman +6 more
TL;DR: In this paper, the authors review the development, characterization, and irradiation effect studies for SiC composites for fusion energy applications and make the case that SiC composite are progressing from the stage of potential viability and proof-of-principle to one where they are ready for system demonstration, i.e., for flow channel inserts in Pb-Li blankets.
Journal ArticleDOI
Current status and recent research achievements in SiC/SiC composites
Yutai Katoh,Lance Lewis Snead,Charles H. Henager,Takashi Nozawa,Tatsuya Hinoki,Aljaž Iveković,Saša Novak,S.M. González de Vicente +7 more
TL;DR: The silicon carbide fiber-reinforced SiC/SiC composite system for fusion applications has seen a continual evolution from development a fundamental understanding of the material system and its behavior in a hostile irradiation environment to the current effort which is directed at a broad-based program of technology maturation program as mentioned in this paper.
Journal ArticleDOI
Silicon carbide composites as fusion power reactor structural materials
Lance Lewis Snead,Takashi Nozawa,Monica Ferraris,Yutai Katoh,Robert J. Shinavski,Mohamed E. Sawan +5 more
TL;DR: The recent progress in the understanding and of basic phenomenon related to the use of SiC and SiC composite in fusion applications will be presented in this article, including both fundamental radiation effects in SiC, and engineering issues such as joining and general materials properties.
Journal ArticleDOI
Design and material issues for high performance SiCf/SiC-based fusion power cores
A.R. Raffray,R.H. Jones,G. Aiello,Michael C. Billone,L. Giancarli,H. Golfier,Akira Hasegawa,Yutai Katoh,Akira Kohyama,S. Nishio,B. Riccardi,Mark S. Tillack +11 more
TL;DR: The SiCf/SiC composite is a promising structural material candidate for fusion power cores and has been considered internationally in several power plant studies as discussed by the authors, but its behavior and performance at high temperatures and under irradiation are still not well known and need to be better characterized.
Journal ArticleDOI
Radiation-tolerant joining technologies for silicon carbide ceramics and composites
Yutai Katoh,Lance Lewis Snead,Ting Cheng,Chunghao Shih,W. Daniel Lewis,Takaaki Koyanagi,Tatsuya Hinoki,Charles H. Henager,Monica Ferraris +8 more
TL;DR: In this paper, a standardized methodology for carrying out joint testing has been established consistent with the small volume samples mandated by neutron irradiation testing, and significant progress made towards identifying and processing irradiation-tolerant joining methods for nuclear-grade SiC.
References
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Journal ArticleDOI
Neoclassical transport of impurities in tokamak plasmas
S.P. Hirshman,D.J. Sigmar +1 more
TL;DR: In this paper, a closed set of moment equations is presented for the time evolution of thermodynamic and magnetic field quantities which results from collisional transport of the plasma and two-dimensional motion of the magnetic flux surface geometry.
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Status and prospects for SiCSiC composite materials development for fusion applications
TL;DR: In this paper, the effect of neutron irradiation on the properties of SiC-SiC composite between 500 and 1200 °C is discussed and ongoing research and development efforts show extremely promising properties and behavior for SiCSiC composites for fusion applications.
Journal ArticleDOI
Study of a compact reversed shear Tokamak reactor
Kunihiko Okano,Y. Asaoka,Ryoji Hiwatari,Nobuyuki Inoue,Y. Murakami,Yuichi Ogawa,K. Tokimatsu,K. Tomabechi,T. Yamamoto,Tomoaki Yoshida +9 more
TL;DR: In this article, the Compact Reversed Shear Tokamak, 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.
Journal Article
Study of critical beta non-circular tokamak equilibria sustained in steady state by beam driven currents
K. Okano,Yuichi Ogawa,H. Naitou +2 more
TL;DR: In this paper, a new code for MHD equilibrium/current drive analysis has been developed which can be used in an analysis of high beta tokamak equilibria consistent with beam driven current profiles.
Journal ArticleDOI
Critical beta non-circular tokamak equilibria sustained in steady state by beam driven currents
TL;DR: In this article, a new code for MHD equilibrium/current drive analysis has been developed which can be used in an analysis of high beta tokamak equilibria consistent with beam driven current profiles.