Modeling of Butt Joint Composed of Nb3Sn Cable-In-Conduit Conductors

Tetsuhiro OBANA; Kazuya TAKAHATA; Shinji HAMAGUCHI; Kyohei NATSUME; Shinsaku IMAGAWA; Toshiyuki MITO; Kaname KIZU; Haruyuki MURAKAMI; Kiyoshi YOSHIDA

doi:10.1585/pfr.9.3405122

Regular Articles

Modeling of Butt Joint Composed of Nb₃Sn Cable-In-Conduit Conductors

Tetsuhiro OBANA, Kazuya TAKAHATA, Shinji HAMAGUCHI, Kyohei NATSUME, Shinsaku IMAGAWA, Toshiyuki MITO, Kaname KIZU, Haruyuki MURAKAMI, Kiyoshi YOSHIDA

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Keywords: JT-60SA, butt joint, Nb₃Sn, cable-in-conduit conductor, joint resistance, quench current

JOURNAL FREE ACCESS

2014 Volume 9 Pages 3405122

DOI https://doi.org/10.1585/pfr.9.3405122

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Abstract

To evaluate butt joint fabrication technology of Nb₃Sn cable-in-conduit (CIC) conductors, joint resistance and quench current were measured using a joint sample developed for the JT-60SA central solenoid (CS) coil. The measurements indicate that the butt joint fulfilled the design requirements. To simulate the butt joint characteristics, a one-dimensional numerical model simplifying the butt joint configuration was developed. Using the model, joint resistance and quench current of the butt joint were calculated. The calculations were in good agreement with the measurements. As a result, the model is valid for butt joint simulations.

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