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February 28, 2026Journal of Plasma Physics0 citationsOpen Access

Target plasma for neutral beam injection into a compact mirror cell

KKKonstantin S. KolesnichenkoNANikolai A. AfanasevTAT. D. Akhmetov

Key Points

  • This work aims to generate target plasma and explore neutral beam injection in a compact fusion device.
  • Utilized a washer-stack gun to produce target plasma.
  • Injected a 1.7 MW hydrogen beam into the Compact Axisymmetric Toroid (CAT) device.
  • Examined ion confinement and the effects of plasma beta and magnetic field configurations.
  • Achieved 20% capture of the injected hydrogen beam into the target plasma.
  • Layed groundwork for future experiments with increased power and diagnostics.
  • Found initial results indicating effects on fast-ion accumulation and plasma stability.

Abstract

This paper describes the generation of a target plasma and first experiments on neutral beam injection into the Compact Axisymmetric Toroid (CAT) device. The target plasma produced by a washer-stack gun captures 20 % of a 1.7 MW hydrogen beam injected into a main fast-ion confinement region. The work provides a foundation for future experiments with higher injection power and additional diagnostics to investigate the accumulation of large-orbit fast ions, high plasma beta effects and possible magnetic field reversal.

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Cite This Study

Kolesnichenko et al. (2026) studied this question.

synapsesocial.com/papers/69a287f20a974eb0d3c03c93https://doi.org/10.1017/s0022377826101251
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