Design progress of the booster synchrotron for Siam Photon Source II

The Siam Photon Source II (SPS-II) represents Thailand’s second synchrotron light source, designed to enhance the region’s scientific capabilities by providing high-energy, high-intensity synchrotron light for both academic and industrial research. The SPS-II will be situated in the Eastern Economic Corridor of Innovation (EECi) in Rayong Province. The SPS-II accelerator complex comprises three main parts: a linear accelerator (linac), a 3 GeV booster synchrotron, and a 3 GeV electron storage ring. The booster synchrotron is specifically designed to ramp beam energy to 3 GeV with a repetition rate of 2 Hz. This paper provides the latest update on the design of the booster synchrotron and related ramping studies. The study investigates the impact of magnetic field errors, multipole field imperfections, and alignment tolerances on beam parameters, with particular emphasis on the energy ramping process to ensure efficient and stable accelerator operation.