Neutron-Heavy vs Low-Neutron Machines

Where the fusion energy goes shapes everything — conversion, materials, siting.

Neutron-heavy

Breeder — 79.7%

Low-neutron

Burner — 5.44%

A D–T machine puts most of its energy into 14 MeV neutrons, driving a steam cycle and heavy shielding and activation. A low-neutron machine keeps most energy in charged particles, enabling direct conversion and gentler materials demands. The choice cascades through the whole plant.

Kronos uses the neutron-heavy breeder deliberately (neutrons are its product) and the low-neutron burner (5.44%) for clean electricity — matching the neutron budget to the job.