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Home / Publications / Journals / Fusion Science and Technology / Volume 51 / Number 2T

RT-1 Project: Magnetosphere-Like Plasma Experiment

Z. Yoshida et al. (17R07)

Fusion Science and Technology / Volume 51 / Number 2T / February 2007 / Pages 29-33

Technical Paper / Open Magnetic Systems for Plasma Confinement

The Ring Trap-1 (RT-1) is a novel plasma device designed to explore various effects of plasma flow in the most universal and fundamental magnetosphere-like configuration. A super-conducting ring magnet, levitated in the vacuum chamber, produces a dipole magnetic field that traps high-temperature plasma. Plasma is produced by electron cyclotron heating using an 8.2GHz microwave. The mechanism of plasma confinement is based on the theory of high-beta equilibrium that is self-organized in a flowing plasma. Realization of such a configuration in a laboratory system, which is known to exist in some astronomical systems, may open a way to the advanced-fuel fusion. Analyses of the equilibrium and stability pose interesting theoretical and experimental challenges.

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