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Synthesis paper demonstrates a solenoid-free startup and non-inductive ramp-up strategy for compact spherical-tokamak breeders, highlighting key risks in auxiliary power and profile control.
Solenoid-free startup and non-inductive ramp-up of the compact spherical-tokamak breeder, which has no room for a central solenoid. The current is initiated by outboard induction, electron-cyclotron heating, and a helicity or beam seed, then handed off to the non-inductive and bootstrap currents that hold the flat-top. The ramp auxiliary power and profile-control hand-off are flagged as carried risks. Shorter synthesis paper.
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Ford et al. (2026) studied this question.
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