Speaker
Description
Under the framework of the SSRF proton-and-helium therapy facility project, a compact synchrotron with a 28-meter circumference has been designed for the generation of high-intensity proton and helium beams. To achieve the high-dose-rate design objective, the optics design of this synchrotron has been further optimized. This optimization successfully reduced the maximum value of the envelope function, enabling a substantial increase in the maximum number of accumulable particles. Concurrently, the vertical beam-stay-clear in the dipole magnets was constrained to ±20 mm, fulfilling the key design requirement for the 2.4 T high-field dipole magnet. Furthermore, particle tracking simulations incorporating space charge effects were conducted for both proton and helium ion beams. The analysis of the tune shift and spread at the end of injection and after bunching demonstrated the dual-particle compatibility and confirmed the feasibility of the compact design.
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