Proton beam fusion

A fusion power plant of 1 GW electric output is proposed here by using proton beam of 12 MJ per shot for energy driver. Technical difficulties appear in beam propagation and focusing. In order to delete the unneutralized charge at the leading edge of the propagating proton beam, simultaneous launching of electron beam is proposed here. If the electron beam current exceeds the proton beam current by 50 kA, cooling of proton beam will be achieved in the region of beam convergence. An indirect driven target can release enough fusion output energy in spite of nonuniform beam irradiation. The flibe for coolant in the reactor cavity with thickness of 50cm thermalizes the neutrons which are produced by fusion reactions, and the flibe protects the solid wall from being damaged. Tritium breeding ratio can exceed unity. (author)