Lattice study in the pre-CDR of the SS ring for the injection chain of SPPC

SPPC is of great significance to collider and the development of high-energy physics. As the last part of the injector chain, SS ring boosts the proton energy from 180 GeV to 2.1 TeV, and its performance is closely related to the beam quality of SPPC. The preliminary lattice study of the SS ring was focused on. Firstly, the filling pattern of SS ring was discussed based on the requirements of SPPC. Then, with MADX, two dedicated lattices, SSH and SSV, which were designed for fast longitudinal extraction scheme in horizontal and vertical directions were given in detail. The horizontal closed orbit deviations of SSH and SSV are smaller than 0.432 mm and 0.337 mm, respectively. The two lattices can provide a foundation for future research.