Tootfinder

Optics design of the Super Tau-Charm Facility collider rings
Ye Zou, Linhao Zhang, Tao Liu, Penghui Yang, Weiwei Li, Tianlong He, Demin Zhou, Kazuhito Ohmi, Sangya Li, Ze Yu, Yihao Mo, Hangzhou Li, Hao Zhou, Jiajun Gao, Zeyuan Meng, Qing Luo, Lei Wang, Youjin Yuan, Jingyu Tang
https://arxiv.org/abs/2507.18924…

Optics design of the Super Tau-Charm Facility collider rings
The Super Tau-Charm Facility (STCF), China's next-generation electron-positron collider, targets an unprecedented luminosity exceeding 5x10^34 cm^-2 s^-1 at a center-of-mass energy of 4 GeV. The implementation of a submillimeter vertical beta function at interaction point (< 1 mm) and crab-waist collision scheme in this low-energy regime introduces critical challenges through severe nonlinear effects that constrain dynamic aperture and degrade Touschek lifetime. To address these constraints, we…