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Kusama, Yoshinori; Ishikawa, Masao
NEW DIAMOND, 21(3), p.24 - 25, 2005/07
no abstracts in English
Todo, Yasushi*; Shinohara, Koji; Takechi, Manabu; Ishikawa, Masao
Physics of Plasmas, 12(1), p.012503_1 - 012503_7, 2005/01
Times Cited Count：52 Percentile：82.28(Physics, Fluids & Plasmas)Energetic-ion driven instability in a JT-60U plasma was investigated using a simulation code for magnetohydrodynamics and energetic particles. The spatial profile of the unstable mode peaks near the plasma center where the safety factor profile is flat and the spatial profile consists of a single primary harmonic m/n = 2/1. The real frequency of the unstable mode is close to the experimental starting frequency of the fast frequency sweeping mode. Simulation results demonstrate that energetic ion orbit width and energetic ion pressure significantly broaden radial profile of the unstable mode. For the smallest value among the investigated energetic ion orbit width, the unstable mode is localized within 20% of the minor radius. This gives an upper limit of the spatial profile width of the unstable mode which the magnetohydrodynamic effects alone can induce. For the experimental condition of the JT-60U plasma, energetic ions broaden the radial width of the unstable mode spatial profile by a factor of 3. The unstable mode is primarily induced by the energetic particles.
Sakamoto, Yoshiteru; Toi, Kazuo*; Fukuda, Takeshi*; Fukuyama, Atsushi*; Fujita, Takaaki; Ogawa, Yuichi*; Takizuka, Tomonori; Miura, Yukitoshi; Yagi, Masatoshi*; Yamada, Hiroshi*; et al.
Purazuma, Kaku Yugo Gakkai-Shi, 80(8), P. 678, 2004/08
no abstracts in English
Shinohara, Koji; Takechi, Manabu; Ishikawa, Masao; Kusama, Yoshinori; Tsuzuki, Kazuhiro; Urata, Kazuhiro*; Kawashima, Hisato; Tobita, Kenji; Fukuyama, Atsushi*; Cheng, C. Z.*; et al.
Plasma Physics and Controlled Fusion, 46(7), p.S31 - S45, 2004/07
Times Cited Count：42 Percentile：77.83(Physics, Fluids & Plasmas)Recent energetic particle physics research has been devoted to Alfven eigenmodes (AEs) in reversed-shear (RS) plasmas, energetic ion transport in the appearance of modes in the frequency range of TAE, energetic ion behavior in the plasma with a current hole, and ripple loss in the complex toroidal field ripple due to ferritic steel plates. We will report these recent progresses for energetic particle physics in JT-60U and JFT-2M.
Asakura, Nobuyuki; Kato, Takako*; Takamura, Shuichi*; Tanabe, Tetsuo*; Higashijima, Satoru; Iio, Shunji*; Ozeki, Takahisa; Ono, Yasushi*; Kawano, Yasunori; Nakajima, Noriyoshi*; et al.
Purazuma, Kaku Yugo Gakkai-Shi, 79(11), p.1194 - 1196, 2003/11
The ITPA (International Tokamak Physics Activity) meeting was held at Scientific Educational Center of Ioffe Institute (St. Petersburg) in Russia. In the meeting, topical physics group meetings of "Scrape-off-layer and Divertor Physics", "MHD, Disruptions and Control", "Energetic Particles, Heating and Steady State Operation", and "Diagnostics" were carried out. The joint meeting for plasma control was also held. In getting many participants from Japan, Europe, Russia, ITER international team, U.S.A. and China (observer), the active discussions were carried out. The outline of discussions in each topical group and in the plasma control joint meeting is reported here.
Tobita, Kenji; Nishio, Satoshi; Konishi, Satoshi; Sato, Masayasu; Tanabe, Tetsuo*; Masaki, Kei; Miya, Naoyuki
Fusion Engineering and Design, 65(4), p.561 - 568, 2003/07
Times Cited Count：20 Percentile：77.16(Nuclear Science & Technology)no abstracts in English
Ide, Shunsuke; Fukuda, Takeshi; Miura, Yukitoshi
Purazuma, Kaku Yugo Gakkai-Shi, 79(2), P. 194, 2003/02
no abstracts in English
Ogawa, Yuichi*; Takizuka, Tomonori; Miura, Yukitoshi; Toi, Kazuo*; Fukuda, Takeshi; Wakatani, Masahiro*; Ide, Shunsuke; Takase, Yuichi*; Tobita, Kenji; Fukuyama, Atsushi*; et al.
Purazuma, Kaku Yugo Gakkai-Shi, 77(10), p.1042 - 1048, 2001/10
no abstracts in English
Okamoto, Masao*; Hamamatsu, Kiyotaka; Murakami, Sadayoshi*; Nakajima, Noriyoshi*
Purazuma, Kaku Yugo Gakkai-Shi, 77(6), p.536 - 546, 2001/06
no abstracts in English
Sato, Masayasu; Kawashima, Hisato; Miura, Yukitoshi; Tsuzuki, Kazuhiro; Kimura, Haruyuki; Uehara, Kazuya; Ogawa, Toshihide; Isei, Nobuaki; Tani, Takashi; Akiyama, Takashi*; et al.
Fusion Engineering and Design, 51-52(Part.B), p.1071 - 1076, 2000/11
Times Cited Count：15 Percentile：68.6(Nuclear Science & Technology)no abstracts in English
Ninomiya, Hiromasa; Tobita, Kenji; Schneider, U.*; Martin, G.*; Heidbrink, W. W.*; Kolesnichenko, Ya. I.*
Nuclear Fusion, 40(7), p.1287 - 1291, 2000/07
Times Cited Count：4 Percentile：80(Physics, Fluids & Plasmas)no abstracts in English
Tobita, Kenji; Fukuyama, Atsushi*
Purazuma, Kaku Yugo Gakkai-Shi, 76(2), p.138 - 144, 2000/02
no abstracts in English
JT-60 Team
JAERI-Research 99-048, 126 Pages, 1999/09
JAERI-Research-99-048.pdf:7.11MB
no abstracts in English
ITER Physics Expert Group on Energetic Particles, Heating and Current Drive
Nuclear Fusion, 39(12), p.2471 - 2494, 1999/00
no abstracts in English
Yoshino, Ryuji
Purazuma-Kakuyugo Gakkai Dai-38-kai Wakate Natu No Gakko, 19 Pages, 1999/00
no abstracts in English
JT-60 Team
JAERI-Research 98-039, 155 Pages, 1998/09
JAERI-Research-98-039.pdf:8.57MB
no abstracts in English
Tobita, Kenji; Nishitani, Takeo; Harano, Hideki*; Tani, Keiji; Isobe, Mitsutaka*; Fujita, Takaaki; Kusama, Yoshinori; G.A.Wurden*; Shirai, Hiroshi; Oikawa, Toshihiro; et al.
Fusion Energy 1996, Vol.1, p.497 - 505, 1997/00
no abstracts in English
Fukuyama, Atsushi*; Ito, Kimitaka*; Ito, Sanae*; Hamamatsu, Kiyotaka
Physics of Fluids B; Plasma Physics, 5(2), p.539 - 549, 1993/02
Times Cited Count：15 Percentile：49.69(Physics, Fluids & Plasmas)no abstracts in English
Hamamatsu, Kiyotaka; Fukuyama, Atsushi*; Azumi, Masafumi
JAERI-M 91-156, 14 Pages, 1991/10
no abstracts in English
Iwamoto, Hiroki
no journal, ,
no abstracts in English
