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Design and structural analysis for the vacuum vessel of superconducting Tokamak JT-60SC

Kudo, Yusuke; Sakurai, Shinji; Masaki, Kei; Urata, Kazuhiro*; Sasajima, Tadayuki; Matsukawa, Makoto; Sakasai, Akira; Ishida, Shinichi

A modification of the JT-60U is planned to a superconducting coil tokamak (JT-60SC) to establish steady-state operation of high beta plasma during a long duration of 100 s, and to ensure the plasma applicability of ferritic steel as reduced activation materials at reactor relevant break-even class plasma. This paper describes the detailed design of vacuum vessel, which has a unique structure for the cost effective manufacturing, and also the structural analysis results for the feasibility study. Eddy current and electromagnetic load analyses in case of stationary plasma disruption is performed and the result is used as the input for the static and dynamic analyses. As a result, the dynamic analysis is necessary to avoid unpredictable inertial force.

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Category:Nuclear Science & Technology

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