Conceptual Design Report of Super Tau-Charm Facility: The Accelerator
Jiancong Bao, Anton Bogomyagkov, Zexin Cao, Mingxuan Chang, Fangzhou Chen, Guanghua Chen, Qi Chen, Qushan Chen, Zhi Chen, Kuanjun Fan, Hailiang Gong, Duan Gu, Hao Guo, Tengjun Guo, Chongchao He, Tianlong He, Kaiwen Hou, Hao Hu, Tongning Hu, Xiaocheng Hu, Dazhang Huang, Pengwei Huang, Ruixuan Huang, Zhicheng Huang, Hangzhou Li, Renkai Li, Sangya Li, Weiwei Li, Xuan Li, Xunfeng Li, Yu Liang, Chao Liu, Tao Liu, Xiaoyu Liu, Xuyang Liu, Yuan Liu, Huihui Lv, Qing Luo, Tao Luo, Mikhail Skamarokha, Shaohang Ma, Wenbin Ma, Masahito Hosaka, Xuece Miao, Yihao Mo, Kazuhito Ohmi, Jian Pang, Guoxi Pei, Zhijun Qi, Fenglei Shang, Lei Shang, Caitu Shi, Kun Sun, Li Sun, Jingyu Tang, Anxin Wang, Chengzhe Wang, Hongjin Wang, Lei Wang, Qian Wang, Shengyuan Wang, Shikang Wang, Ziyu Wang, Shaoqing Wei, Yelong Wei, Jun Wu, Sang Wu, Chunjie Xie, Ziyu Xiong, Xin Xu, Jun Yang, Penghui Yang, Tao Yang, Lixin Yin, Chen Yu, Ze Yu, Youjin Yuan, Yifeng Zeng, Ailin Zhang, Haiyan Zhang, Jialian Zhang, Linhao Zhang, Ning Zhang, Ruiyang Zhang, Xiaoyang Zhang, Yihao Zhang, Yangcheng Zhao, Jingxin Zheng, Demin Zhou, Hao Zhou, Yimei Zhou, Zeran Zhou, Bing Zhu, Xinghao Zhu, Zi'an Zhu, Ye Zou
公開日: 2025/9/15
Abstract
Electron-positron colliders operating in the GeV region of center-of-mass energies or the Tau-Charm energy region, have been proven to enable competitive frontier research, due to its several unique features. With the progress of high energy physics in the last two decades, a new-generation Tau-Charm factory, Super Tau Charm Facility (STCF) has been actively promoting by the particle physics community in China. STCF holds great potential to address fundamental questions such as the essence of color confinement and the matter-antimatter asymmetry in the universe in the next decades. The main design goals of STCF are with a center-of-mass energy ranging from 2 to 7 GeV and a peak luminosity surpassing 5*10^34 cm^-2s^-1 that is optimized at a center-of-mass energy of 4 GeV, which is about 50 times that of the currently operating Tau-Charm factory - BEPCII. The STCF accelerator is composed of two main parts: a double-ring collider with the crab-waist collision scheme and an injector that provides top-up injections for both electron and positron beams. As a typical third-generation electron-positron circular collider, the STCF accelerator faces many challenges in both accelerator physics and technology. In this paper, the conceptual design of the STCF accelerator complex is presented, including the ongoing efforts and plans for technological R&D, as well as the required infrastructure. The STCF project aims to secure support from the Chinese central government for its construction during the 15th Five-Year Plan (2026-2030) in China.