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Shimada, Michiya; Mukhovatov, V.*; Federici, G.*; Gribov, Y.*; Kukushkin, A.*; Murakami, Yoshiki*; Polevoi, A. R.*; Pustovitov, V. D.*; Sengoku, Seio; Sugihara, Masayoshi
Nuclear Fusion, 44(2), p.350 - 356, 2004/02
Recent performance analysis has improved confidence in achieving Q 10 in inductive operation in ITER. Performance analysis based on empirical scaling shows the feasibility of achieving Q 10 in inductive operation with a sufficient margin. Theory-based core modeling indicates the need of high pedestal temperature (2-4 keV) to achieve Q 10, which is in the range of projection with pedestal scaling. The heat load of type-I ELM could be made tolerable by high density operation and further tilting the target plate (if necessary). Pellet injection from High-Field Side would be useful in enhancing Q and reducing ELM heat load. Steady state operation scenarios have been developed with modest requirement on confinement improvement and beta (HH98(y,2) 1.3 and betaN 2.6). Stabilisation of RWM, required in such regimes, is feasible with the present saddle coils and power supplies with double-wall structure taken into account.
Shimada, Michiya; Mukhovatov, V.*; Federici, G.*; Gribov, Y.*; Kukushkin, A. S.*; Murakami, Yoshiki*; Polevoi, A. R.*; Pustovitov, V. D.*; Sengoku, Seio; Sugihara, Masayoshi
Nuclear Fusion, 44(2), p.350 - 356, 2004/02
Times Cited Count:39 Percentile:75.72(Physics, Fluids & Plasmas)Performance analysis based on empirical scaling shows the feasibility of achieving Q 10 in inductive operation. Analysis has also elucidated a possibility that ITER can potentially demonstrate Q 50, enabling studies of self-heated plasmas. Theory-based core modeling indicates the need of high pedestal temperature (3.2 - 5.3 keV) to achieve Q 10, which is in the range of projection with presently available pedestal scalings. Pellet injection from high-field side would be useful in enhancing Q and reducing ELM heat load in high plasma current operation. If the ELM heat load is not acceptable, it could be made tolerable by further tilting the target plate. Steady state operation scenarios at Q = 5 have been developed with modest requirement on confinement improvement and beta (HH98(y,2) 1.3 and betaN 2.6). Stabilisation of RWM, required in such regimes, is feasible with the present saddle coils and power supplies with double-wall structure taken into account.
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
Murakami, Yoshiki*; Amano, Tsuneo*; Shimizu, Katsuhiro; Shimada, Michiya; Ogawa, Yuichi*
JAERI-Research 2001-049, 58 Pages, 2001/11
no abstracts in English
Matsumoto, Hiroshi; Barabaschi, P.*; Murakami, Yoshiki*
Fusion Technology, 40(1), p.37 - 51, 2001/07
Times Cited Count:3 Percentile:27.11(Nuclear Science & Technology)Recently, technical objectives of ITER were redefined aiming at the cost reduction of about 50% from the 1998 ITER design. Machine parameters which would satisfy the revised technical requirements under the engineering constraints were specified using a system code. The performance of these machines were studied and compared. As a result of these studies, final machine parameters were determined with revised conservative physics assumptions. This machine is referred as ITER-FEAT. It was shown that ITER-FEAT would achieve Q=10 in inductive operation with reasonable and conservative assumptions. Also, with an efficient current drive system and modest confinement improvement, possibility of Q=5 non-inductive operations in a steady state was shown.
Murakami, Yoshiki*; Senda, Ikuo; Chudnovskiy, A.*; Vayakis, G.*; Polevoi, A. R.*; Shimada, Michiya
Purazuma, Kaku Yugo Gakkai-Shi, 73(7), p.712 - 729, 2001/07
no abstracts in English
Nishio, Satoshi; Ushigusa, Kenkichi; Ueda, Shuzo; Polevoi, A.*; Kurita, Genichi; Tobita, Kenji; Kurihara, Ryoichi; Hu, G.; Okada, Hidetoshi*; Murakami, Yoshiki*; et al.
JAERI-Research 2000-029, 105 Pages, 2000/10
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:16 Percentile:72.09(Nuclear Science & Technology)no abstracts in English
Nishio, Satoshi; Ueda, Shuzo; Aoki, Isao; Kurihara, Ryoichi; Kuroda, Toshimasa*; Miura, H.*; Kunugi, Tomoaki; Takase, Kazuyuki; Seki, Yasushi; Shinya, K.*; et al.
Fusion Engineering and Design, 41, p.357 - 364, 1998/00
Times Cited Count:51 Percentile:95.43(Nuclear Science & Technology)no abstracts in English
*; Fujieda, Hirobumi*; Tsunematsu, Toshihide
JAERI-M 94-080, 151 Pages, 1994/06
no abstracts in English
*; Sugihara, Masayoshi
Fusion Technology, 24, p.375 - 390, 1993/12
no abstracts in English
Horiike, Hiroshi*; Kuroda, Toshimasa*; *; Sugihara, Masayoshi; Matsuda, Shinzaburo
JAERI-M 93-208, 31 Pages, 1993/10
no abstracts in English
Fujieda, Hirobumi*; *; Sugihara, Masayoshi
JAERI-M 92-178, 133 Pages, 1992/11
no abstracts in English
*; Fujieda, Hirobumi*; Itami, Kiyoshi; Sugihara, Masayoshi
JAERI-M 92-145, 46 Pages, 1992/09
no abstracts in English
Sugihara, Masayoshi; Tada, Eisuke; Shimomura, Yasuo; Tsunematsu, Toshihide; Nishio, Satoshi; *; *; Koizumi, Koichi;
JAERI-M 92-136, 43 Pages, 1992/09
no abstracts in English
*; Horiike, Hiroshi; Kuroda, Toshimasa*; Matsuzaki, Yoshimi; Shimomura, Yasuo; Sugihara, Masayoshi
JAERI-M 92-056, 53 Pages, 1992/04
no abstracts in English