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Shinohara, Koji; JT-60 Team
Journal of the Korean Physical Society, 49, p.S56 - S62, 2006/12
The recent results of JT-60, such as the long discharge with the high normalized beta of 2.3 and the pulse length of 22.3 s which was 13 times longer than the current profile relaxation, and the observation of the increase of D emission and electron density as results of wall saturation will be reviewed. Additionally, the motivation and the design work will be reviewd on an on-going recent project of the ferritic insertion for the reduction of the toroidal field ripple. The pioneering works of JFT-2M in the ferritic insertion will be also reported.
Yonekawa, Izuru; Sueoka, Michiharu; Hosoyama, Hiroki*; Kawamata, Yoichi; Suzuki, Takahiro; Kurihara, Kenichi
Fusion Engineering and Design, 81(15-17), p.1897 - 1903, 2006/07
Times Cited Count:2 Percentile:17.14(Nuclear Science & Technology)Recent years, plasma current profile (j-profile) control has been newly proposed to avoid instabilities in the high normalized-beta plasma. In particular, for the real-time profile feedback control, the control period should be roughly less than several tens of ms, including data communication among relating systems. In order to minimize data transfer time,the profile data being a function of time and position is required to decrease its data size for efficient data handling. A profile data,defined as 3-dimension time series data (q,R,Z,t), was reduced by introducing normalized minor radius rho in place of (R,Z). Data handling for profile control will be presented with their technical issues, together with computing hardware engineering.
Fujita, Takaaki; JT-60 Team
Nuclear Fusion, 46(3), p.S3 - S12, 2006/03
Times Cited Count:8 Percentile:27.96(Physics, Fluids & Plasmas)no abstracts in English
Kikuchi, Mitsuru; Tamai, Hiroshi; Matsukawa, Makoto; Fujita, Takaaki; Takase, Yuichi*; Sakurai, Shinji; Kizu, Kaname; Tsuchiya, Katsuhiko; Kurita, Genichi; Morioka, Atsuhiko; et al.
Nuclear Fusion, 46(3), p.S29 - S38, 2006/03
Times Cited Count:13 Percentile:41.68(Physics, Fluids & Plasmas)The National Centralized Tokamak (NCT) facility program is a domestic research program for advanced tokamak research to succeed JT-60U incorporating Japanese university accomplishments. The mission of NCT is to establish high beta steady-state operation for DEMO and to contribute to ITER. The machine flexibility and mobility is pursued in aspect ratio and shape controllability, feedback control of resistive wall modes, wide current and pressure profile control capability for the demonstration of the high-b steady state.
Tsuchiya, Katsuhiko; Akiba, Masato; Azechi, Hiroshi*; Fujii, Tsuneyuki; Fujita, Takaaki; Fujiwara, Masami*; Hamamatsu, Kiyotaka; Hashizume, Hidetoshi*; Hayashi, Nobuhiko; Horiike, Hiroshi*; et al.
Fusion Engineering and Design, 81(8-14), p.1599 - 1605, 2006/02
Times Cited Count:1 Percentile:9.94(Nuclear Science & Technology)no abstracts in English
Tsuzuki, Kazuhiro; Shinohara, Koji; Kamiya, Kensaku; Kawashima, Hisato; Sato, Masayasu; Kurita, Genichi; Bakhtiari, M.; Ogawa, Hiroaki; Hoshino, Katsumichi; Kasai, Satoshi; et al.
Journal of Nuclear Materials, 329-333(1), p.721 - 725, 2004/08
Times Cited Count:7 Percentile:45.06(Materials Science, Multidisciplinary)no abstracts in English
Matsukawa, Makoto; JT-60SC Design Team
IEEE Transactions on Applied Superconductivity, 14(2), p.1399 - 1404, 2004/06
Times Cited Count:4 Percentile:28.61(Engineering, Electrical & Electronic)no abstracts in English
Ishida, Shinichi; JT-60 Team; JFT-2M Group
Physics of Plasmas, 11(5), p.2532 - 2542, 2004/05
Times Cited Count:22 Percentile:57.76(Physics, Fluids & Plasmas)no abstracts in English
Tamai, Hiroshi; Matsukawa, Makoto; Kurita, Genichi; Hayashi, Nobuhiko; Urata, Kazuhiro*; Miura, Yushi; Kizu, Kaname; Tsuchiya, Katsuhiko; Morioka, Atsuhiko; Kudo, Yusuke; et al.
Plasma Science and Technology, 6(1), p.2141 - 2150, 2004/02
Times Cited Count:2 Percentile:6.49(Physics, Fluids & Plasmas)The dominant issue for the the modification program of JT-60 (JT-60SC) is to demonstrate the steady state reactor relevant plasma operation. Physics design on plasma parameters, operation scenarios, and the plasma control method are investigated for the achievement of high-. Engineering design and the R&D on the superconducting magnet coils, radiation shield, and vacuum vessel are performed. Recent progress in such physics and technology developments is presented.
Sakurai, Shinji; JT-60 Team
Plasma Science and Technology, 6(1), p.2151 - 2158, 2004/02
Times Cited Count:0 Percentile:0.02(Physics, Fluids & Plasmas)no abstracts in English
Nagasaki, Kazunobu*; Isayama, Akihiko; Ide, Shunsuke; JT-60 Team
Nuclear Fusion, 43(10), p.L7 - L10, 2003/10
Times Cited Count:48 Percentile:79.54(Physics, Fluids & Plasmas)no abstracts in English
Ishida, Shinichi; Abe, Katsunori*; Ando, Akira*; Chujo, T.*; Fujii, Tsuneyuki; Fujita, Takaaki; Goto, Seiichi*; Hanada, Kazuaki*; Hatayama, Akiyoshi*; Hino, Tomoaki*; et al.
Nuclear Fusion, 43(7), p.606 - 613, 2003/07
no abstracts in English
Department of Fusion Plasma Research Tokamak Program Division
JAERI-Review 2003-012, 41 Pages, 2003/03
This report summarizes the contributed papers of the 19th IAEA Fusion Energy Conference held at Lyon, France, from October 14th to 19th, 2002.
Department of Fusion Plasma Research Tokamak Program Division
JAERI-Review 2003-011, 412 Pages, 2003/03
This booklet compiles the contributed papers and presentation materials from JAERI to the 19th IAEA Fusion Energy Conference held at Lyon, France, from October 14th to 19th, 2002. The papers describe the recent progress in the experimental research in JT-60U and JFT-2M tokamaks, theoretical studies, fusion technology and RD for ITER and fusion reactors. Total 32 papers consist of 1 overview talk, 14 oral and 17 poster presentations. Eight papers written by authors from other institutes and universities under collaboration with JAERI are also included.
Kamada, Yutaka
Purazuma, Kaku Yugo Gakkai-Shi, 79(2), p.123 - 135, 2003/02
This paper reviews recent studies on tokamak MHD stability towards achievement of high beta steady-state, where profile control of current, pressure and rotation, and optimization of the plasma shape play fundamental roles. The key instabilities are the neoclassical tearing mode, the resistive wall mode, the edge localized modes etc. Towards demonstration of an economically attractive tokamak reactor, we need to increase the beta value with sufficiently high integrated plasma performance. Towards this goal, studies on stability control in the self-regulating plasma system are essential.
Ishida, Shinichi; Matsuda, Shinzaburo
Purazuma, Kaku Yugo Gakkai-Shi, 76(6), p.601 - 603, 2000/06
no abstracts in English
Kamada, Yutaka; Isayama, Akihiko; Oikawa, Toshihiro; Sakamoto, Yoshiteru; Hosogane, Nobuyuki; Takenaga, Hidenobu; Kusama, Yoshinori; Fujita, Takaaki; Takeji, Satoru; Ozeki, Takahisa; et al.
Nuclear Fusion, 39(11Y), p.1845 - 1853, 1999/11
Times Cited Count:70 Percentile:87.48(Physics, Fluids & Plasmas)no abstracts in English
Kamada, Yutaka; Ushigusa, Kenkichi; Naito, Osamu; Neyatani, Yuzuru; Ishida, Shinichi; Fujita, Takaaki; Yoshino, Ryuji; Kikuchi, Mitsuru; Mori, Masahiro; Ninomiya, Hiromasa
Plasma Physics and Controlled Fusion, 36, p.A123 - A128, 1994/00
Times Cited Count:32 Percentile:70.26(Physics, Fluids & Plasmas)no abstracts in English
Ninomiya, Hiromasa
Tokamak Concept Improvement,ISPP-16, 0, p.305 - 324, 1994/00
no abstracts in English
Hosogane, Nobuyuki
Phys. Fluids B, 5(7), p.2412 - 2419, 1993/07
Times Cited Count:10 Percentile:38.4(Physics, Fluids & Plasmas)no abstracts in English