Optimum design of the shields in coal measuring devices

The design of shields in coal measuring devices was simulated to analyze neutron and photon transport in complex shields.The dose transmissivity of 14 MeV pulsed neutrons was calculated for various shielding materials and geometry sizes.The shield design was optimized based on the quality and price.The results show that paraffin is the best choice for shielding material,it effectively reduces the weight of the shield to optimize the geometry of the shield.