Affiliations: [a] Department of Quantum Science and energy Engineering,
Graduate School of Engineering, Tohoku University, 01, Aramaki-Aza-Aoba, Aoba,
Sendai, Miyagi, 980-8579, Japan. Tel.: +81 22 217 7906; Fax: +81 22 217 7906;
E-mail: [email protected]
Correspondence:
[*]
Corresponding author: Satoshi Ito, Department of Quantum Science
and energy Engineering, Graduate School of Engineering, Tohoku University, 01,
Aramaki-Aza-Aoba, Aoba, Sendai, Miyagi, 980-8579, Japan. Tel.: +81 22 217 7906;
Fax: +81 22 217 7906; E-mail: [email protected]
Abstract: For a future design of fusion power plant, concept of remountable SC
magnet is proposed to improve cost performance. In this concept butt jointing
of HT_C SC is used as jointing method and contact
force can be obtained from electromagnetic force induced by self magnetic field
of the magnet. Evaluation of performance of butt jointing with laminated SC
tapes is performed to demonstrate feasibility of the remountable SC magnet
experimentally. The result shows that the jointing resistance is almost in
inversely proportional to the contact area and dependent on transport current.
Numerical analysis is carried out to explicate the resistance dependence. The
numerical results, however, shows difference from the experimental one.
Further, evaluation of electromagnetic force is carried out to prove that the
contact stress can be obtained only by electromagnetic force.
