Two vertically separated but connected tokamak plasma regions, termed respectively (1) the plasma formation region and (2) the fusion reaction region, share a common torroidal vacuum vessel and a common toroidal field coil system. Poloidal field coils and solenoidal coils adjacent to the plasma formation region are driven by pulsed ac electrical current to inductively create a sequence of tokamak plasma rings, each of which is ejected through the connecting duct to the fusion reaction region where it merges with a larger tokamak plasma. The process delivers volt-second flux and additional fuel to sustain continual operation of larger plasma.
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