Optimization of neutral beam injection in the beam plasma neutron source

摘要

The power efficiency of neutron production in the Beam Plasma Neutron Source (BPNS), proposed as a volumetric 14 MeV neutron source, is maximized at an energy of 110-120 keV for positive ion based (deuteron) neutral beams. Deuterons injected into a triton plasma and tritons into a deuteron plasma are shown to give equal results at the same injection energy per nucleon. For deuterons, this is the energy used in long pulse neutral beams on TFTR; thus, the required DC beams could be developed from the existing systems.