Speaker: Jingyu Tang (University of Science and Technology of China USTC)

The Super Tau-Charm Facility (STCF) was proposed as a third-generation circular electron-positron collider in the energy range of 2-7 GeV (CoM) and with a luminosity greater than 5*10^34 cm^-2s^-1 @4 GeV, aiming to explore charm physics and tau physics in the next decades. This seminar will introduce the science goals, facility design, R&D efforts and project planning of STCF, but with the main focus on the accelerator. Under the financial support of the key technology R&D project by the local governments and other national funding agencies, the STCF accelerator team including international collaborators has completed the conceptual design of the accelerator in 2024, and is working on the technical design. The accelerator consists of a full-energy injector consisting of multi-section linacs and a positron damping/accumulator ring and a double-ring collider with the crab-waist collision scheme. Key accelerator physics and technological challenges will be addressed. Ongoing R&D efforts and progresses will be summarized. The baseline design has one detector, but the reserved space for the second detector is also reserved. The project planning will also be given.