A survey of plasma-type neutron sources is presented. Mirror devices are found to be most suitable for use as a neutron source because their high-β values allow a high-intensity flux of 14-MeV deuterium-tritium neutrons at a moderate plasma size. Mirror devices also have a convenient geometry for radiation tests. A conceptual design and performance of a neutron source based on the gas dynamic trap are described. Components (neutral beam injectors, tritium system, etc.) of the plasma-type neutron source are compared with those of the International Thermonuclear Experimental Reactor (ITER) facility. It is shown that the current level of technology is sufficient for construction of a mirror-based neutron source.