Artificial intelligent focusing of a microbeam system based on reinforcement learningYanlin Li, Hongjin Mou, Wei Zhang, Jinlong Guo, Shi An, Guanghua Du and Xiaojun LiuEur. Phys. J. Plus, 140 4 (2025) 327DOI: https://doi.org/10.1140/epjp/s13360-025-06221-3