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A 13 T test facility with a 700 mm cold bore has been utilized for the research of high-field and high-current superconductors for magnets of fusion reactors. Studies on configuration of a conductor sample have been carried out for simplification of the conductor sample and its supporting structure. Since sideways force and rotational moment are induced by an asymmetric current component of the sample, the route of feeders and the configuration of terminals of the sample must be optimized. The sample is set at the coaxial position in the center plane of the external field coil because a vertical or radial shift of the sample induces vertical or radial force. According to the structural analysis of the sample chamber, the allowable sideways force of the sample is estimated at 44 kN. Considering the electromagnetic force and the magnetic field at the terminals, representative configurations of one-turn samples are proposed. Concerning the number of turns of the conductor sample, a one-turn or rewound coil is preferred for a fast ramp rate of the sample current.

Study on Configuration of Conductor Samples for 13 T - 700 mm Test Facility