Plasma and Fusion Research

Volume 17, 2404052 (2022)

Regular Articles

Behavior of Gas Injected Fast Ignition Targets
Mayuko KOGA, Sotaro UCHINO, Eiki MAEDA, Kohei YAMANOI1) and Akifumi IWAMOTO2)
Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
1)
Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565-0871, Japan
2)
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki, Gifu 509-5292, Japan
(Received 10 January 2022 / Accepted 21 March 2022 / Published 22 June 2022)

Abstract

Gas target injection system is newly fabricated to observe behaviors of injected fast ignition targets. It can eject a mimic fast ignition target by pressured nitrogen gas and magnetic separator. The flight attitude of injected target is observed by high-speed cameras. Analysis of high-speed camera images indicates that the target velocity is increased with the injection gas pressure up to around 100 m/s which meets the demanded specification of a reactor and the target flight angle is varied in wide range shot by shot. The technical problem how to control flight angle is recognized for a fast ignition reactor.

Keywords

fusion reactor, fast ignition, target injection, high-speed camera, image analysis

DOI: 10.1585/pfr.17.2404052

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