Optimization progress of large-scale radiation shielding Monte Carlo simulation software based on AIS variance reduction technique system: MCShieldJiajun Wu, Zhen Wu, Ankang Hu, Yisheng Hao, Yanheng Pu, Hui Zhang, Rui Qiu and Junli LiEPJ Nuclear Sci. Technol., 11 (2025) 4DOI: https://doi.org/10.1051/epjn/2024032
