High-Field Magnets

Why higher magnetic field is the single biggest lever for a compact fusion machine.

Breeder peak field

16.84 T

Burner plug field

26.49 T

For a given performance, machine size and cost fall steeply as magnetic field rises — field is the master lever of compact fusion. High-temperature superconductors let Kronos reach 16.84 T in the breeder and 26.49 T in the burner plug, fields that enable a small, economical core.

The trade is mechanical: higher field means larger forces and tighter fatigue margins — the magnet's binding gate.