Hyperion's build is scoped at roughly four years, using the award-to-plasma schedule of a compact HTS mirror device as the precedent. It is a schedule analog, stated as one — the design itself already exists in the Kronos record.
Schedule risk is real and usually understated. Rather than invent a timeline, Hyperion borrows the demonstrated award-to-plasma duration of a built compact HTS device as its analog, then flags that it is exactly that: a schedule comparison, not a construction guarantee.
A four-year figure anchored to a real project is checkable; a four-year figure pulled from ambition is not. The distinction is the same discipline the whole programme applies to its physics numbers.
| Build duration | ~4 years |
| Basis | compact-HTS award-to-plasma precedent |
| Status | schedule analog, stated as such |
| Design maturity | exists in the record (Modes A-F) |
| Machine | compact spherical tokamak |