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Isobe, Mitsutaka*; Shinohara, Koji
Purazuma, Kaku Yugo Gakkai-Shi, 80(12), p.1036 - 1043, 2004/12
Escaping energetic ion diagnostics in magnetically confined plasma experiments are described in this lecture note. Experimental results from escaping energetic ion diagnostics in TFTR, JFT-2M, CHS and W7-AS are shown. In addition to mechanism of energetic ion loss from a viewpoint of particle orbit, effect of MHD activity on energetic particle transport is reviewed.
Tobita, Kenji; Kusama, Yoshinori; Shinohara, Koji; Nishitani, Takeo; Kimura, Haruyuki; Kramer, G. J.*; Nemoto, Masahiro*; Kondoh, Takashi; Oikawa, Toshihiro; Morioka, Atsuhiko; et al.
Fusion Science and Technology (JT-60 Special Issue), 42(2-3), p.315 - 326, 2002/09
Times Cited Count：8 Percentile：47.85(Nuclear Science & Technology)Energetic particle experiments in JT-60U are summarized, mainly covering ripple loss and Alfven eigenmodes (AE modes). Significant loss was observed for 85 keV NBI ions and fusion-produced tritons increased when toroidal field ripple at the plasma surface, especially in reversed shear plasma. Measurement of hot spots on the first wall due to ripple loss confirmed agreement with code predictions, validating the modeling incorporated in an orbit-following Monte Carlo code. A variety of AE modes were destabilized in ICRF minority heating and negative-ion-based NBI (N-NBI) heating. Most of the observed modes are gap modes identified to be TAE, EAE and NAE. Interesting finding is pulsating modes accompanying frequency sweep, which were destabilized by N-NBI and sometimes induced a beam ion loss of up to 25%. Also presented are energetic particle issues in auxiliary heating with ICRF and N-NBI.
Moriyama, Shinichi; Fujii, Tsuneyuki; Kimura, Haruyuki; Anno, Katsuto; Yokokura, Kenji; Shinozaki, Shinichi; Terakado, Masayuki; Hiranai, Shinichi; Saigusa, Mikio*
Fusion Science and Technology (JT-60 Special Issue), 42(2-3), p.467 - 481, 2002/09
Times Cited Count：6 Percentile：39.48(Nuclear Science & Technology)no abstracts in English
He minority Ion Cyclotron Range of Frequency (ICRF) Heating in International Thermonuclear Experimental Reactor (ITER)Matsumoto, Hiroshi
Japanese Journal of Applied Physics, Part 2, 40(11A), p.L1187 - L1189, 2001/11
Times Cited Count：0 Percentile：0(Physics, Applied)He minority ICRF Heating in ITER was simulated by the 1.5 D tokamak simulation code PRETOR and ICRF heating simulation code PION. It was found that the best heating efficiency in terms of the fusion power output is achieved with the smallest miority concentration ratio、0.5%, when the fuel dilution effect by the minority ions was taken into account. The overall heating efficiency is insensitive to the location of the resonance layer over a wide range of the minor radius position. Very efficient heating of the ITER plasma with He minority ICRF heating by spreading the RF depostion at three resonant locations was demonstarted by the PRETOR/PION simulation. In the Q=10 reference operation regime, ICRF is better than NBI by 8%, better than pure electron heating by 20%. In the low density region, ICRF is better than NBI by 15%, and better than electron heating by 50%.
n eigenmodesKramer, G. J.; Cheng, C. Z.*; Kusama, Yoshinori; Nazikian, R. M.*; Takeji, Satoru; Tobita, Kenji
Nuclear Fusion, 41(9), p.1135 - 1151, 2001/09
Times Cited Count：37 Percentile：72.51(Physics, Fluids & Plasmas)no abstracts in English
Fujii, Tsuneyuki; Moriyama, Shinichi
IEEE Transactions on Plasma Science, 29(2), p.318 - 325, 2001/04
Times Cited Count：4 Percentile：14.85(Physics, Fluids & Plasmas)no abstracts in English
Kramer, G. J.; Iwase, Makoto; Kusama, Yoshinori; Morioka, Atsuhiko; Nemoto, Masahiro; Nishitani, Takeo; Shinohara, Koji; Takeji, Satoru; Tobita, Kenji; Ozeki, Takahisa; et al.
Nuclear Fusion, 40(7), p.1383 - 1396, 2000/07
Times Cited Count：46 Percentile：77.72(Physics, Fluids & Plasmas)no abstracts in English
Fukuyama, Atsushi*; Takase, Yuichi*; Ide, Shunsuke; Ushigusa, Kenkichi
Purazuma, Kaku Yugo Gakkai-Shi, 76(2), p.127 - 137, 2000/02
no abstracts in English
n eigenmodes and their coupling to global Alfvn eigenmodesKramer, G. J.; Cheng, C. Z.*; Fu, G. Y.*; Kusama, Yoshinori; Nazikian, R. M.*; Ozeki, Takahisa; Tobita, Kenji
Physical Review Letters, 83(15), p.2961 - 2964, 1999/10
Times Cited Count：24 Percentile：75.05(Physics, Multidisciplinary)no abstracts in English
Iwase, Makoto; Koide, Yoshihiko; Tobita, Kenji; Moriyama, Shinichi; Takenaga, Hidenobu; Fujita, Takaaki; Shirai, Hiroshi; Kusama, Yoshinori; Nemoto, Masahiro; Oikawa, Toshihiro; et al.
Proc. of 13th Topical Conf. on Applications of Radio Frequency Power to Plasmas, p.116 - 119, 1999/04
no abstracts in English
Moriyama, Shinichi; Kimura, Haruyuki; Fujii, Tsuneyuki; Saigusa, Mikio*; Imai, Tsuyoshi; Yamamoto, Takumi; Arai, H.*; Ota, K.*
Fusion Engineering and Design, 45(1), p.31 - 40, 1999/00
Times Cited Count：2 Percentile：21.16(Nuclear Science & Technology)no abstracts in English
ITER Physics Expert Group on Energetic Particles, Heating and Current Drive
Nuclear Fusion, 39(12), p.2495 - 2539, 1999/00
no abstracts in English
Kusama, Yoshinori; Kimura, Haruyuki; Nemoto, Masahiro; Hamamatsu, Kiyotaka; Tobita, Kenji; Oikawa, Toshihiro; Afanassiev, V. I.*; Morioka, Atsuhiko; Fujita, Takaaki; Koide, Yoshihiko; et al.
Plasma Physics and Controlled Fusion, 41(5), p.625 - 643, 1999/00
Times Cited Count：5 Percentile：20.1(Physics, Fluids & Plasmas)no abstracts in English
Kusama, Yoshinori; Fu, G. Y.*; Kramer, G. J.*; Saigusa, Mikio*; Oikawa, Toshihiro; Ozeki, Takahisa; Moriyama, Shinichi; Tchernychev, F. V.*; Nemoto, Masahiro; Kondoh, Takashi; et al.
Plasma Physics and Controlled Fusion, 41(9), p.1167 - 1177, 1999/00
Times Cited Count：5 Percentile：20.1(Physics, Fluids & Plasmas)no abstracts in English
Tobita, Kenji; JT-60 Team
Plasma Physics and Controlled Fusion, 41(SUPPL.3A), p.A333 - A343, 1999/00
Times Cited Count：28 Percentile：65.17(Physics, Fluids & Plasmas)no abstracts in English
Moriyama, Shinichi; Fujii, Tsuneyuki; Kimura, Haruyuki; Arai, Hiroyuki*; Ota, K.*
Proceedings of the 18th IEEE/NPSS Symposium on Fusion Engineering (SOFE '99), p.399 - 402, 1999/00
no abstracts in English
Moriyama, Shinichi; Kimura, Haruyuki; Fujii, Tsuneyuki; Yamamoto, Takumi; Saigusa, Mikio*
Japanese Journal of Applied Physics, Part 1, 37(11), p.6204 - 6209, 1998/11
Times Cited Count：3 Percentile：18.89(Physics, Applied)no abstracts in English
Kimura, Haruyuki; Kusama, Yoshinori; Saigusa, Mikio*; Kramer, G. J.*; Tobita, Kenji; Nemoto, Masahiro; Kondoh, Takashi; Nishitani, Takeo; O.DaCosta*; Ozeki, Takahisa; et al.
Nuclear Fusion, 38(9), p.1303 - 1314, 1998/09
Times Cited Count：126 Percentile：95.15(Physics, Fluids & Plasmas)no abstracts in English
Kusama, Yoshinori; Kimura, Haruyuki; Ozeki, Takahisa; Saigusa, Mikio*; Kramer, G. J.*; Oikawa, Toshihiro; Moriyama, Shinichi; Nemoto, Masahiro; Fujita, Takaaki; Tobita, Kenji; et al.
Nuclear Fusion, 38(8), p.1215 - 1223, 1998/08
Times Cited Count：41 Percentile：76.58(Physics, Fluids & Plasmas)no abstracts in English
Moriyama, Shinichi; Kimura, Haruyuki; Fujii, Tsuneyuki; Saigusa, Mikio*; Arai, H.*
Japanese Journal of Applied Physics, 37(6A), p.3536 - 3540, 1998/06
Times Cited Count：4 Percentile：23.96(Physics, Applied)no abstracts in English
