A Foundry, Not a Power Plant
Hyperion is sized to an isotope supply requirement rather than an electrical output target; its product is material, not megawatts.
Sized to supply, not to output
Conventional fusion programs size a machine to a power rating and then ask whether the economics of selling that power close. Hyperion inverts the question. It is sized to the neutron flux needed to breed a target quantity of tritium and to activate materials for irradiation services. The output metric is kilograms per year and neutron-hours, not net megawatts.
- Tritium class output near 4 kg/yr
- Helium-3 coproduct near 1.97 kg/yr
- 14 MeV neutron flux for materials irradiation and isotope production
Why this changes the build
Because the product is material, the machine only needs fusion gain (Q_sci 3.076, 85.0 MW fusion power) to be useful. It does not need to clear the net-electric threshold. That removes the largest single physics-and-engineering dependency from the first build and lets the program deliver value from the neutron economy while the burner matures separately.
What a foundry requires
A foundry is defined by throughput, availability, and reproducibility of its output, not by peak rating. The engineering priorities follow: a reliable tritium plant, a breeding blanket tuned across breeding ratios of 1.1, 1.5, and 1.8, robust neutron handling, and maintainability for high duty. These priorities shape the assembly sequence, the diagnostics, and the gate program more than any single power number does.
Hyperion is a design and simulation study today. The foundry framing sets the acceptance criteria the first-of-a-kind unit must meet: sustained gain, a closed and accountable fuel loop, and a product stream that reproduces from unit to unit.