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Ide, Shunsuke; JT-60 Team
Plasma Science and Technology, 8(1), p.1 - 4, 2006/01
Times Cited Count：0 Percentile：0.01(Physics, Fluids & Plasmas)Recent progress in development of high performance plasma and efforts to prolong their sustainment towards ITER advanced operations and a steady-state reactor in JT-60U are presented focusing following achievements; 
N=3 sustained for 6.2s (
4.1tR) without NTMs in normal shear, fBS0.45 sustained for 5.8s (2.8tR) under nearly full CD in weak a shear plasma, fBS0.75 sustained for 7.4s (2.7tR) under nearly full CD in a reversed shear plasma. Furthermore, importance of these results and issues in advanced tokamak development will be discussed.
Ikeda, Yoshitaka; Oikawa, Toshihiro; Ide, Shunsuke
Purazuma, Kaku Yugo Gakkai-Shi, 81(10), p.773 - 778, 2005/10
In steady-state tokamak fusion reactors, an efficient external current drive and a large fraction of the bootstrap current are required for non-inductive operation at low circulating power. NBI is a powerful and reliable actuator for current drive and heating. A negative ion-based NBI (N-NBI) with a high beam energy more than 350 keV has been installed in the JT-60U tokamak in order to study the NBI current drive and heating in an ITER relevant regime. This paper presents recent progress of N-NBI experiments and its system in JT-60U towards steady-state operation for ITER and tokamak fusion reactors.
Inoue, Takashi; Sakamoto, Keishi
Nihon Genshiryoku Gakkai-Shi, 47(2), p.120 - 127, 2005/02
no abstracts in English
Ueda, Yoshio*; Inoue, Takashi; Kurihara, Kenichi
Nihon Genshiryoku Gakkai-Shi, 46(12), p.845 - 852, 2004/12
no abstracts in English
Tani, Keiji; Tobita, Kenji; Nishio, Satoshi; Iio, Shunji*; Tsutsui, Hiroaki*; Aoki, Takayuki*
Purazuma, Kaku Yugo Gakkai-Shi, 80(11), p.931 - 934, 2004/11
Studies were made on ripple losses of fusion produced alpha particles in a low-aspect-ratio tokamak reactor (VECTOR) by using an orbit-following Monte-Carlo code. Alpha particles are well confined in VECTOR. In a low-aspect-ratio tokamak, the dependence of ripple losses on the number of toroidal-field (TF) coils N is very weak. Assuming a toroidal peaking factor of 2 for the heat load due to loss particles, about 1.5% and 1.0% of TF ripple at the outer edge of plasma might be allowable for the first wall with and without cooling system, respectively. In both cases, the number of TF-coils can be reduced to about 4.
Nishio, Satoshi
Purazuma, Kaku Yugo Gakkai-Shi, 80(1), p.14 - 17, 2004/01
SiC/SiC composite is a promising structural material candidate for fusion power cores and has been considered internationally in several power plant studies. It offers safety advantages arising from its low induced radioactivity and afterheat, and the possibility of high efficiency of energy conversion through high temperature operation. The latest SiC/SiC-based power core design studies are summarized, and the key SiC/SiC parameters affecting the performance of power core components are highlighted.
Kurita, Genichi; Tsuda, Takashi; Azumi, Masafumi; Ishida, Shinichi; Takeji, Satoru*; Sakasai, Akira; Matsukawa, Makoto; Ozeki, Takahisa; Kikuchi, Mitsuru
Nuclear Fusion, 43(9), p.949 - 954, 2003/09
Times Cited Count：31 Percentile：67.08(Physics, Fluids & Plasmas)In order to improve economic and environmental suitability of tokamak fusion reactors, both the accomplishment of high beta plasmas and the practical use of low activation materials to reduce the amount of radioactive waste are crucially important. Low radio-activation ferritic steel is considered as a most promising candidate for structural material in DEMO reactors, and there is the possibility of reduction of critical beta value by the deterioration of MHD stability due to ferromagnetism of ferritic steel. This paper investigates the effect of ferromagnetism with plasma flow on the beta limit of tokamak plasma by carrying out MHD stability analyses including ferromagnetic and plasma flow effects.
Kurihara, Ryoichi; Nishio, Satoshi; Konishi, Satoshi
Thermal Stresses 2001, p.81 - 84, 2001/00
no abstracts in English
Seki, Yasushi
Fusion Engineering and Design, 48(3-4), p.247 - 254, 2000/09
Times Cited Count：4 Percentile：32.50(Nuclear Science & Technology)no abstracts in English
Nishio, Satoshi; Ueda, Shuzo; Kurihara, Ryoichi; Kuroda, Toshimasa*; Miura, H.*; Sako, Kiyoshi*; Takase, Kazuyuki; Seki, Yasushi; Adachi, Junichi*; Yamazaki, Seiichiro*; et al.
Fusion Engineering and Design, 48(3-4), p.271 - 279, 2000/09
Times Cited Count：17 Percentile：71.90(Nuclear Science & Technology)no abstracts in English
Yoshino, Ryuji
Purazuma, Kaku Yugo Gakkai-Shi, 75(12), p.1337 - 1374, 1999/12
no abstracts in English
Seki, Yasushi
New Energy Systems and Conversions, p.355 - 359, 1999/00
no abstracts in English
Takase, Kazuyuki; Kunugi, Tomoaki; Shibata, Mitsuhiko; Seki, Yasushi
Nihon Genshiryoku Gakkai-Shi, 38(11), p.904 - 906, 1996/00
Times Cited Count：0 Percentile：0.01(Nuclear Science & Technology)no abstracts in English
Oyama, Yukio; Konno, Chikara; Ikeda, Yujiro; Kosako, Kazuaki*; Maekawa, Hiroshi; Nakamura, Tomoo; M.A.Abdou*; Bennett, E. F.*; A.Kumar*; ; et al.
Fusion Technology, 28(2), p.305 - 319, 1995/09
no abstracts in English
Seki, Yasushi
Materials for Advanced Enaergy Systems & Fission and Fusion Engineering 94, 0, p.43 - 50, 1995/00
no abstracts in English
Oyama, Yukio; Konno, Chikara; Ikeda, Yujiro; Maekawa, Fujio; Kosako, Kazuaki*; Nakamura, Tomoo; Maekawa, Hiroshi; M.Z.Youssef*; A.Kumar*; M.A.Abdou*; et al.
JAERI-M 94-015, 193 Pages, 1994/02
no abstracts in English
Seki, Yasushi
Fusion Engineering and Design, 25, p.5 - 13, 1994/00
Times Cited Count：2 Percentile：28.05(Nuclear Science & Technology)no abstracts in English
Seki, Yasushi
Nihon Genshiryoku Gakkai-Shi, 35(1), p.5 - 10, 1993/01
no abstracts in English
Seki, Yasushi
Genshiryoku Kogyo, 39(3), p.51 - 55, 1993/00
no abstracts in English
Kimura, Toyoaki; JT-60 Team
Proc. of the 14th Symp. on Fusion Engineering,Vol. 2, p.860 - 866, 1992/00
no abstracts in English
