Proposal of a linked mirror stellarator configuration for magnetic confinement experiments

A new linked mirror stellarator device for magnetic confinement experiments is proposed. The new linked mirror device consists of two straight magnetic mirrors connected by two half-torus. The device is constructed by just circular coils with a fixed radius. The structure of the configuration as a whole is three dimensional because the two linear mirror sections are not parallel. The angle between the two mirror sections generates rotational transform makes it a stellarator, which results in good magnetic confinement of toroidally passing particles. In this way the usual loss cone of the traditional linear mirror machines is eliminated. Most of the trapped particles are also well confined. The calculated neoclassical confinement is very good and is comparable with that of an equivalent tokamak. The scaling law of particle neoclassical confinement time shows that it meets Lawson's Criterion under typical fusion parameters.