Plasma and current drive parameter options for a megawatt range fusion neutron source

Tokamak-based MW-range fusion neutron sources are needed for the development of innovative neutron technologies, mainly for the control of sub-critical active zones of fast nuclear reactors, for closing the nuclear fuel cycle, for neutron research purposes and also for nuclear technologies relevant to DEMO. In this paper a possibility of reducing the tokamak size while achieving steady-state plasma discharges with the fusion power up to 10 MW is discussed. It is assumed that the total auxiliary heating and current drive power does not exceed 15 MW and the total power consumption is below 30 MW. The possible parameter options and operation scenarios are described.