Metal plate target design for the lead slowing down time spectrometer (LSDTS)

摘要

A better technology for lead slowing down time spectrometer (LSDTS) has been developed to quantify the fissile isotopes in any kind of nuclear fuels. A linear electron accelerator is usually considered due to its high efficiency neutron production and a flexible size depending on the beam power. Neutrons produced from the collision between the electron beam and a metal target propagate into the lead medium and finally react with the fissile isotope. In order to have a marginal resolution of the induced fission neutron from the fissile isotope and to have a high statistical accuracy of the measured signal for fissile isotope analysis, it is required to have a high intensity neutron source through the proper target design. In this study, parameters of plate shaped metal targets are investigated with Monte Carlo calculations. Some experimental results are also provided to verify the target design of LSDTS.