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Journal Articles

Steady-state operation scenarios with a central current hole for JT-60SC

Tamai, Hiroshi; Ishida, Shinichi; Kurita, Genichi; Shirai, Hiroshi; Tsuchiya, Katsuhiko; Sakurai, Shinji; Matsukawa, Makoto; Sakasai, Akira

Fusion Science and Technology, 45(4), p.521 - 528, 2004/06

 Times Cited Count:0 Percentile:0.01(Nuclear Science & Technology)

The 1.5D time-dependent transport analysis has been carried out to investigate steady state operation scenarios with a central current hole by off-axis current drive schemes consistent with a high bootstrap current fraction for a large superconducting tokamak JT-60SC. A steady state operation scenario with HH$$_{y2}$$=1.4 and $$beta$$$$_{N}$$=3.7 has been obtained at I$$_{p}$$=1.5 MA, B$$_{t}$$=2 T and q$$_{95}$$=5 where non-inductive currents are developed during the discharge to form a current hole with beam driven currents by tangential off-axis beams in combination with bootstrap currents by additional on-axis perpendicular beams. The bootstrap fraction increases up to nearly 75% of the plasma current and the current hole region is enlarged up to about 30% of the minor radius at 35 s from the discharge initiation. The current hole is confirmed to be sustained afterward for a long duration of 60 s. The stability analysis shows that the beta limit with the conducting wall can be about $$beta$$$$_{N}$$=4.5, which is substantially above the no wall ideal MHD limit.

Journal Articles

Neural-net disruption predictor in JT-60U

Yoshino, Ryuji

Nuclear Fusion, 43(12), p.1771 - 1786, 2003/12

 Times Cited Count:42 Percentile:77.35(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Burn control in tokamak fusion reactors; Disruption and fast plasma shutdown

Yoshino, Ryuji

Purazuma, Kaku Yugo Gakkai-Shi, 75(12), p.1337 - 1374, 1999/12

no abstracts in English

Journal Articles

The second test results on the Nb$$_{3}$$Sn demo poloidal coil(DPC-EX)

Ando, Toshinari; Nakajima, Hideo; *; Hiyama, Tadao; Takahashi, Yoshikazu; Nishi, Masataka; Yoshida, Kiyoshi; Okuno, Kiyoshi; Kato, Takashi; Sugimoto, Makoto; et al.

Advances in Cryogenic Engineering, Vol.39, 0, p.335 - 341, 1994/00

no abstracts in English

JAEA Reports

Japanese Contributions to IAEA INTOR Workshop,Phase Two A,Part 2 Chapter VIII:Physics

; ; ; ; ; *; ; *; ;

JAERI-M 85-080, 70 Pages, 1985/07

JAERI-M-85-080.pdf:2.42MB

no abstracts in English

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