Abstract

Abstract Single-turn coil (STC) is a kind of destructive pulsed magnet aiming at ultra high magnetic field. In this study, the simple geometry optimization approach to improve the magnetic field homogeneity of STC is proposed. By making the conductor inner surface concave, the amplitude of the magnetic field is decreased by only 15%, while the space volume of the homogeneous magnetic field is increased by 200-600%. Through three STC examples with different conductor inner diameters and different discharge currents, the effectiveness of this method is validated. In particular, it is theoretically proven that the volume of the homogeneous magnetic field increases as the inner surface concave curvature radius decreases. This geometry optimization method provides the theoretical support for homogeneous field design of STC.

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