Spallation neutron source target at J-PARC

The high-power pulsed spallation neutron source is one of the most convenient tools to conduct cutting-edge research in several domains of materials and life science. In this system, proton beams of several hundred kW to MW order extracted from the high power accelerator is injected into a target and vast amount of neutrons are generated via the spallation reactions with the target material nuclei. The neutron beams are then supplied to the state-of-the-art suite of various experimental devices for fundamental research activities. In this paper outline of the spallation neutron source, target design and technical topics are reviewed by referring mainly to the mercury target system of J-PARC. (author)