Simulation studies of beam-induced background and space charge effects on Time Projection Chamber for the CEPCXin She, Huirong Qi, Jinxian Zhang, Jianbo Zheng, Yue Chang, Manqi Ruan, Haoyu Shi, Jianchun Wang, Linghui Wu, Gang Li, Chengdong Fu, Quan Ji and Zhi DengEur. Phys. J. Spec. Top., (2026) 1-13DOI: https://doi.org/10.1140/epjs/s11734-026-02404-w