On-going design analyses of the SSR1 single spoke resonator for RAON

The design and the fabrication of superconducting cavities for the Korean heavy ion accelerator, RAON, are in progress. In this paper, we present the progress towards the design of a SSR1 single spoke resonator (β = 0.3 and f = 325 MHz). Not only electromagnetic and mechanical analyses for the cavity but also the issues that should be considered when fabricating and operating the cavity are discussed. In addition, a variant of the SSR1 cavity for more efficient performance is proposed with its electromagnetic analyses.