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Development of Target Injection System by Using Electromagnetic Coils

Mayuko KOGA, Sotaro UCHINO and Eiki MAEDA

Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan

(Received 26 December 2022 / Accepted 7 June 2023 / Published 17 August 2023)

Abstract

In this paper, we propose a fuel target injection method using electromagnetic coils for fusion power reactors. When a current pulse is applied to the coil, the iron sabot is attracted by electromagnetic force and enters the coil. As the current pulse attenuates, the magnetic force dissipates, and the iron sabot is propelled out of the coil due to inertia. The fuel target is separated from the iron sabot by a sabot separator consisting of ring-shaped permanent magnets. It is found that the velocity of the injected target increased to some extent by increasing the number of coil turns. It has been demonstrated that multi-stage acceleration using multiple coils is effective for increasing the velocity of the injected target.

Copyright (c) 2023 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

fusion power reactor, fast ignition, target injection, high-speed camera

DOI: 10.1585/pfr.18.2404060

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