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Honda, Mitsuru; Takizuka, Tomonori; Tobita, Kenji; Matsunaga, Go; Fukuyama, Atsushi*
Nuclear Fusion, 51(7), p.073018_1 - 073018_9, 2011/07
Times Cited Count：19 Percentile：59.34(Physics, Fluids & Plasmas)Yagi, Masatoshi
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no abstracts in English
Matsuyama, Akinobu; Yagi, Masatoshi; Kagei, Yasuhiro*
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no abstracts in English
Hayashi, Nobuhiko; Honda, Mitsuru; Hoshino, Kazuo; Hamamatsu, Kiyotaka; Shimizu, Katsuhiro; Takizuka, Tomonori; Ozeki, Takahisa; Fukuyama, Atsushi*
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Hayashi, Nobuhiko; Parail, V.*; Koechl, F.*; Aiba, Nobuyuki; Takizuka, Tomonori; Wiesen, S.*; Lang, P. T.*; Oyama, Naoyuki; Ozeki, Takahisa
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Honda, Mitsuru; Ozeki, Takahisa; Takizuka, Tomonori; Shimizu, Katsuhiro; Hamamatsu, Kiyotaka; Hayashi, Nobuhiko; Hoshino, Kazuo; Aiba, Nobuyuki
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We report significant progress in integrated modeling in JAEA with an emphasis on the advancement of code development and its application to several problems. Topics can be separated into three parts: quantitative analyses of experiments by using 1.5D transport code TOPICS together with some modules dealing with phenomena in which we are interested, a study of plasma rotation mechanism and qualitative comparison with experiments by using multi-fluid transport code TASK/TX, and a study of edge plasma behavior by using an integrated SOL/divertor code SONIC and full particle simulation code PARASOL. Towards predictive calculations for burning plasmas and experimental analyses for coming JT-60SA, these three major codes have been being developed in parallel and they will be finally integrated in near future. At present development of each code progresses in terms of improving existing models and including another physics model.
Aiba, Nobuyuki; Shiraishi, Junya; Tokuda, Shinji*; Yagi, Masatoshi
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Numerical analysis is performed for identifying the poloidal rotation effect on the stability of edge localized MHD mode, which relates to the type-I ELM, and that of the resistive wall mode (RWM), which sometimes causes a disruption. This analysis clarifies that the poloidal rotation observed experimentally can destabilize the edge localized MHD mode but stabilize RWM. Furthermore, when the plasma rotates in both the toroidal and the poloidal directions, MHD stability depends on the direction of the toroidal rotation. This dependence is qualitatively consistent with the experimental result of the relation between ELM phenomena and the toroidal rotation direction in JT-60U. Though this dependence of RWM is not discussed until now, this result suggests that we need to confirm whether or not this dependence can be observed experimentally to stabilize RWM in JT-60SA and ITER.
Honda, Mitsuru; Hayashi, Nobuhiko; Takizuka, Tomonori*; Yoshida, Maiko; Ide, Shunsuke; Fujita, Takaaki
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Takizuka, Tomonori
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A new method to enhance the electron-cyclotron-current-drive efficiency is proposed for steady-state tokamak DEMO reactors. Injecting multi-waves with multi-antennas, high-energy tail of electrons is formed and the current-drive efficiency is enhanced. Setting of multi-antennas along a magnetic-field line is also effective. It is demanded that modeling and simulation studies for optimizing multi-wave system will be carried out in advance.
