The polywell's a plasma confinement concept that combines elements of inertial electrostatic confinement and magnetic confinement fusion, intended ultimately to produce fusion power. The name polywell's a portmanteau of "polyhedron" and "potential well." The polywell consists of electromagnet coils arranged in a polyhedral configuration and positively charged to between several 10s and low 100s of kilovolts. This charged magnetic polyhedron's called a MaGrid. Electrons are introduced outside th… (More on Polywell)