Abstract
Experiments which have been undertaken over a number of years have shown that a rotating magnetic field can drive a significant non-linear Hall current in a plasma. Successful experiments of this concept have been made with a device called rotamak. In its original configuration this device was a field reversed configuration without a toroidal magnetic field but with a vertical field to establish the MHD equilibrium. However, modifications have shown that current can also be driven if a central current-carrying rod is used to provide an applied toroidal field. The new rotamak has then a spherical tokamak magnetic field structure.
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Storer, R., von Oertzen, G. Current drive for rotamak plasmas. Pramana - J Phys 62, 1083–1089 (2004). https://doi.org/10.1007/BF02705254
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DOI: https://doi.org/10.1007/BF02705254