Transmutation neutronics properties research based on accelerator-driven subcritical experimental facility VENUS-1

This paper focuses on the neutronics of subcritical transmutation in ADS core. Taking VENUS-1 as the object of study, the neutron energy spectrum characteristics, spatial distribution of neutron flux density in the core, transmutation rates of different MA and LLFP nuclides at a certain location in the core are systematically calculated and analysed under the driving of external neutrons with different energies. The transmutation rates of different MA and LLFP nuclides at a certain position in the core are shown. For comparison and verification, the neutron energy spectrum of the VENUS-1 core at different locations, the neutron flux distribution in the fast zone of the core, and the transmutation reaction rate of a
${}^{137}\text{Cs}$
sample in the fast-thermal coupling zone have been also researched experimentally.