S-Band Choke Mode Cavity for Low Energy Storage Ring

Several variants of a low-energy storage ring for Thomson scattering X-ray source were considered in [1]. The most promising variant “C” of the ring with small dimensions and large dynamic aperture has also large momentum compaction factor, which would lead to too long bunches with RF cavity operating at 714 MHz, so shorter wavelength must be used. In this paper we present results of optimization of S-band double-cells cavity with parasitic mode damping by chokes similar to [2]. Interaction of the bunch circulating in the ring with cavity parasitic modes is simulated.