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Journal Articles

Liquid divertor

Shimada, Michiya; Miyazawa, Junichi*

Purazuma, Kaku Yugo Gakkai-Shi, 92(2), p.119 - 124, 2016/02

AA2015-0751.pdf:0.61MB

Actively convected liquid metal divertor is promising for providing a solution for issues of DEMO reactors including heat removal and disruptions. This chapter gives an overview of the motivation, research history, recent development, future perspective and issues to be resolved.

Journal Articles

Wall conditioning and experience of the carbon-based first wall in JT-60U

Masaki, Kei; Yagyu, Junichi; Arai, Takashi; Kaminaga, Atsushi; Kodama, Kozo; Miya, Naoyuki; Ando, Toshiro; Hiratsuka, Hajime; Saido, Masahiro

Fusion Science and Technology (JT-60 Special Issue), 42(2-3), p.386 - 395, 2002/09

 Times Cited Count:8 Percentile:49.76(Nuclear Science & Technology)

The wall conditioning of JT-60U consists of the 300$$^{circ}$$C baking, He-TDC, He-GDC, tokamak discharge cleaning and boronization. Using these methods, total pressure of the vacuum vessel reached finally 10$$^{-6}$$ $$sim$$ 10$$^{-5}$$ Pa. The oxygen impurity was decreased to $$sim$$0.5%. The experience with the carbon-based first wall showed that taper shaping is effective to reduce the local heat concentration to the tile edges. The observed poloidal asymmetric deposition of carbon on the divertor region implies that the carbon impurity produced in the outer divertor contributes to the deposition on the inner divertor. In 1992 and 1993, the B$$_{4}$$C converted CFC tiles were installed in the outer divertor to reduce chemical sputtering of CFC tiles and oxygen impurity. The reduction was successfully demonstrated with the B$$_{4}$$C converted CFC tiles. In order to understand the tritium behavior in JT-60U, tritium in the first wall and the exhaust gas were measured. The estimated tritium inventory in the first wall was $$sim$$50% of the generated tritium.

Journal Articles

Wall conditioning to reduce impurity and control particle recycling in JT-60U

Higashijima, Satoru; JT-60 Team

Purazuma, Kaku Yugo Gakkai-Shi, 75(11), p.1297 - 1304, 1999/00

no abstracts in English

Journal Articles

Advances in JT-60U facilities and its operation

Kimura, Toyoaki; JT-60 Team

16th IEEE/NPSS Symp. on Fusion Engineering (SOFE '95), 1, p.724 - 729, 1996/00

no abstracts in English

Journal Articles

Impurity and particle recycling reduction by boronization in JT-60U

Higashijima, Satoru*; Sugie, Tatsuo; Kubo, Hirotaka; Tsuji, Shunji; Shimada, Michiya; Asakura, Nobuyuki; Hosogane, Nobuyuki; Kawano, Yasunori; Nakamura, Hiroo; Itami, Kiyoshi; et al.

Journal of Nuclear Materials, 220-222, p.375 - 379, 1995/00

 Times Cited Count:32 Percentile:93.37(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Material behavior of first wall in JT-60

Ando, Toshiro; Takatsu, Hideyuki; Nakamura, Hiroo; Yamamoto, Masahiro; ; Arai, Takashi; Kaminaga, Atsushi; ; Horiike, Hiroshi; Shimizu, Masatsugu; et al.

Kaku Yugo Kenkyu, 65(SPECIAL ISSUE), p.27 - 49, 1991/03

no abstracts in English

Journal Articles

Conditioning of graphite surface by atomic hydrogen shower

; ; Murakami, Yoshio

Journal of Nuclear Materials, 91(1), p.223 - 226, 1980/00

 Times Cited Count:8 Percentile:87.25(Materials Science, Multidisciplinary)

no abstracts in English

JAEA Reports

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