Hyperion Breeder: Model Overview
The Hyperion model is a compact deuterium-tritium spherical tokamak whose layered shells breed tritium around the plasma.
The breeder in the model
Hyperion is the Kronos breeder: a deuterium-tritium spherical tokamak whose job is to produce more tritium than it consumes while demonstrating fusion gain. In the model it appears as a compact, low-aspect-ratio machine dominated by a slender central stack, with a thick blanket wrapping the plasma to capture neutrons for breeding.
Frozen design point
- Fusion gain Q of 3.424 at 88.7 MW fusion power (simulation result).
- Plasma current 9.86 MA.
- Toroidal field 8 T on axis, 16.84 T peak on the conductor.
- Negative triangularity of -0.30.
- Tritium breeding ratio target 1.8.
Why spherical
A spherical tokamak squeezes the plasma toward the machine axis, giving a low aspect ratio. This raises the plasma pressure that a given magnetic field can hold, which is efficient, but it forces everything through a very tight central column. Much of what makes Hyperion distinctive, the center stack design and the REBCO magnets, follows from managing that tight center.
How to explore it
Start with a poloidal cutaway to see the D-shaped plasma and the shells outboard of it, then select the center stack, the toroidal-field coils, and the blanket in turn. Each opens its own detailed page in this library.
Status
Hyperion is not built. Construction of the first unit begins Q2 2027, with first tritium targeted around 2030. The model is a design record. Continue to the center stack or the breeding blanket.