Neutron Wall Loading

The neutron power per unit area striking the first wall.

Neutron wall loading is the fusion-neutron power per square metre on the first wall — a driver of damage rate and heat. HYPERION's first-wall load is 1.97 MW/m2; the burner's is far lower thanks to its 5.44% neutron fraction.

Neutron wall loading — the fusion-neutron power per square metre on the first wall — combines with the neutron spectrum to set the damage rate and component lifetime. HYPERION's 1.97 MW/m2 is a real, stated number that drives its materials and maintenance planning; the burner's is far gentler thanks to its low neutron fraction.