Conceptual design of neutron diagnostic systems for fusion experimental reactor

Abstract Neutron measurement in fusion experimental reactors is very important for burning plasma diagnostics and control, monitoring of irradiation effects on device components, neutron source characterization for in-situ engineering tests etc. A conceptual design of neutron diagnostic systems for an International Thermonuclear Experimental Reactor (ITER)-like fusion experimental reactor is made, which consists of a neutron yield monitor, a neutron emission profile monitor and a 14 MeV neutron spectrometer. Each of them is based on a unique idea to meet the required performances for full power conditions assumed at ITER operation. The final design results and expected performances of the promising neutron diagnostic systems are presented together with their critical design issues.