[Table of Contents]

Plasma and Fusion Research

Volume 9, 3405122 (2014)

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 KIZU1), Haruyuki MURAKAMI1) and Kiyoshi YOSHIDA1)
National Institute for Fusion Science, Toki 509-5292, Japan
1)
Japan Atomic Energy Agency, Naka 311-0193, Japan
(Received 15 November 2013 / Accepted 10 June 2014 / Published 29 July 2014)

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.

Keywords

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

DOI: 10.1585/pfr.9.3405122

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This paper may be cited as follows:

Tetsuhiro OBANA, Kazuya TAKAHATA, Shinji HAMAGUCHI, Kyohei NATSUME, Shinsaku IMAGAWA, Toshiyuki MITO, Kaname KIZU, Haruyuki MURAKAMI and Kiyoshi YOSHIDA, Plasma Fusion Res. 9, 3405122 (2014).