Abstract
In toroidal magnetic fusion experiments, including the tokamak, gross confinement is provided by static magnetic fields, which cannot do work on the plasma. The addition of electric fields along the minor radius of a toroidal plasma, to provide magnetoelectric toroidal confinement, has been reported in an Electric Field Bumpy Torus (EFBT), and in recent papers at a meeting of the IAEA Technical Committee on Tokamak Plasma Biasing. Such radial electric fields introduce the possibility of doing work on a toroidal plasma. This work, which can be provided by relatively inexpensive DC power supplies, can manifest itself in charged-particle transport radially inward against the density gradient, with concurrent improvements in density or containment time; this work can also manifest itself in heating the ions and electrons to high energies by E/B drift.
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References
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Roth, J.R. (1997). Magnetoelectric Toroidal Confinement. In: Panarella, E. (eds) Current Trends in International Fusion Research. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-5867-5_29
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DOI: https://doi.org/10.1007/978-1-4615-5867-5_29
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