Optimization of 9Be Target on Double Layer Beam Shaping Assembly (DLBSA) System to Increase the Intensity of Epithermal Neutron
Optimization of 9Be Target on Double Layer Beam
The optimization of the 9Be target has been carried out to increase the fast neutron flux and is expected to induce an increase in the epithermal neutron flux. Optimization was carried out by interacting of the 9Be target with protons of 5-30 MeV and studying the effect of variations in the thickness and diameter of the target on the production of fast neutrons. Proton energy optimization results show that the interaction of a 30 MeV proton with a 9Be target produces the highest fast neutron flux with an energy above 10 keV. The optimization results of the Be configuration results in 7 cm thick and 5 cm diameter capable of producing the highest fast neutron flux of 1013 cm2/s. The increase in the fast neutron flux produced by the target resulted in an increase in the epithermal neutron flux from 1 x 109 n/cm2/s to 4.26 x 109 n/cm2/s.