Modeling analysis demonstrates net tritium surplus and export potential in compact spherical-tokamak breeders, indicating scalable fuel self-sufficiency for fusion fleets.
The tritium fuel cycle and breeding ladder of a compact spherical-tokamak breeder, developed as an honest mass balance. The per-unit burn rate follows from the fusion power; the net surplus is a confirmed ladder to the advanced-blanket ceiling. A single advanced unit exports tritium; a national-scale supply is a fleet property, stated as such. Direct internal recycling minimizes the standing inventory. Physics only; no economics.
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Ford et al. (2026) studied this question.
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