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Kurihara, Kenichi; Yonekawa, Izuru; Kawamata, Yoichi; Sueoka, Michiharu; Hosoyama, Hiroki*; Sakata, Shinya; Oshima, Takayuki; Sato, Minoru; Kiyono, Kimihiro; Ozeki, Takahisa
Fusion Engineering and Design, 81(15-17), p.1729 - 1734, 2006/07
Times Cited Count：13 Percentile：65.83(Nuclear Science & Technology)A large tokamak fusion device JT-60 is expected to explore more advanced tokamak discharge scenario towards the ITER and a future power reactor. We believe the following experimental issues are expected to be solved in JT-60. To clarify how to keep a steady-state plasma with high performance, and how to avoid plasma instabilities almost completely. By stimulus of this motivation, several essential development and modifications of plasma control and data acquisition systems have been performed in JT-60. In this report, we discuss the developments to improve the JT-60 plasma control and data acquisition systems. In addition, a future plasma control and data acquisition systems leading to a standard design for a power reactor is envisaged on the basis of the 20-year plasma operation experiences.
Kaji, Yoshiyuki; Miwa, Yukio; Tsukada, Takashi; Hayakawa, Masao*; Nagashima, Nobuo*; Matsuoka, Saburo*
JAERI-Research 2005-029, 156 Pages, 2005/09
JAERI-Research-2005-029.pdf:57.24MB
This report describes a result of the research conducted under contract with JNES that was concerned with a multi-scale analysis of plastic deformation behavior at the crack tip of SCC. The research was carried out to evaluate the validity of the SCC growth data acquired in the IGSCC project based on a mechanistic understanding of SCC. For the purpose, in this research, analyses of the plastic deformation behavior and microstructure around the crack tip were performed in a nano-order scale. The hardness measured in nano, meso and macro scales was employed as a common index of the strength, and the essential data necessary to understand the SCC propagation behavior were acquired and analyzed that are mainly a size of plastic deformation region and a microstructural information in the region, e.g. data of crystallografy, microscopic deformation and dislocations at the inside of grains and grain boundaries.
Kurihara, Kenichi; JT-60 Team
Proceedings of 9th International Conference on Accelerator and Large Experimental Physics Control Systems (ICALEPCS 2003) (CD-ROM), p.612 - 616, 2004/10
Since tokamak magnetic fusion research has just made a step forward to an international collaborative project ITER, the existing tokamaks including JT-60 are expected to explore more advanced operation scenarios toward the ITER and a future power reactor. Hence, we believe the following experimental issues are to be adequately discussed, and possibly to be solved in JT-60: To clarify how to keep a steady-state plasma with high performance, and how to avoid plasma instabilities almost completely. By stimulus of this motivation, the JT-60 plasma real-time control system has been drastically improved with remodeling in hardware as well as in software. In particular, several essential developments for exploring advanced scenarios have been accomplished or are being conducted. In the developments, we adopted the fast board computers' network linking through large reflective memories. Finally, in addition to presentation on plasma control engineering activities in JT-60, we would like to envisage a future plasma control system toward a power reactor.
Tsukada, Takashi
Nihon Yosetsu Kyokai "Genshiryoku Kozo Kiki No Zairyo, Sekkei, Seko, Kensa Ni Kansuru Koshukai" Tekisuto, 40 Pages, 2002/00
no abstracts in English
Ara, Katsuyuki; Katagiri, Masaki; ; *; K.P.Termaat*; T.Johnsen*
Nihon Genshiryoku Gakkai-Shi, 35(11), p.999 - 1014, 1993/11
Times Cited Count：1 Percentile：18.76(Nuclear Science & Technology)no abstracts in English
; ; ; ; ;
Nuclear Technology, 54, p.68 - 86, 1981/00
Times Cited Count：1 Percentile：24.41(Nuclear Science & Technology)no abstracts in English
Nihon Genshiryoku Gakkai-Shi, 17(6), p.277 - 279, 1975/06
no abstracts in English
; ; ; ; Katsuragi, Satoru;
Genshiryoku Hatsuden, 1(2), P. 45, 1957/00
no abstracts in English
