Efficient and Accurate Optimal Design Method for Radiation Shielding

To ensure the longevity and reliability of spacecraft during on-orbit missions, it is essential to protect components that do not satisfy the requirement of the radiation resistance with radiation shielding. With the advancement of commercial spaceflight, modern aerospace industries demand low cost and high efficiency for spacecraft designs. Traditional methods of radiation shielding enhancement are no longer adequate to meet these requirements. The optimization method for radiation shielding enhancement designed in this article organically combines the advantages of the ray-tracing (RT) method and the reverse Monte-Carlo (RMC) method, thereby avoiding the shortcomings of using either method alone. Simulation results demonstrate that this method not only ensures the accuracy of total ionizing dose (TID) simulation results for sensitive components but also enhances the efficiency of radiation shielding enhancement design, saving time in the design process. The accurate patching results designed by this method optimize the patching quality compared with traditional shielding design method, significantly reducing radiation shielding mass and conserving valuable payload resources.