Application of tungsten target in spallation neutron source

With the construction and operation of nuclear fusion, spallation neutron source and other large scientific devices, tungsten, as a refractory metal material with excellent properties, has become more and more important. In this paper, the development of spallation neutron sources in the world is introduced, with emphasis on the requirements of spallation neutron sources for tungsten target and its research and development technology. Tungsten target assembly for spallation neutron source in China has innovatively developed tantalum coated tungsten and efficient heat dissipation structure, which has solved the technical problem of heat generation and cooling water corrosion of tungsten target in high-energy particle irradiation and ensured the normal operation of spallation neutron source equipment in China.