43rd International Conference on High Energy Physics

Accelerator Conceptual Design and R&D Efforts for Super Tau-Charm Facility

Not scheduled

20m

Natal, Brazil

Talk Accelerator: Physics, Performance, and R&D for Future Facilities

Speaker

Jingyu Tang (University of Science and Technology of China)

Description

Super Tau-Charm Facility (STCF) is a major high-energy project under study in China. It is a third-generation circular electron-positron collider in the CoM energy range of 2-7 GeV and with an optimal luminosity greater than 51034 cm-2s-1, aiming to explore charm physics and tau physics in the next decades. The STCF team completed the conceptual design report of the accelerator and made it reviewed by an international committee in June 2025. The accelerator consists of an injector and two collider rings. The injector that is a combination of four different linac sections, a positron source, a positron damping ring, and transport lines, will provide full-energy electron and positron beams for top-up injections in the collider rings in the whole energy range. The collider rings are designed to have an extremely low beta* (<=1 mm), a large Piwinski angle (>10) and a high beam current (~2 A) with the Crab-Waist collision scheme. Several identified technical challenges have been undergone R&D efforts. This presentation will introduce the conceptual design of the accelerator and as well the R&D progress. STCF is applying for the formal approval from the Chinese central government, planing to start the construction in the 15th five-year plan (2026-2030).