Stochastic cooling simulation of rare isotope beam and its secondary beam

Stochastic cooling is a broadband feedback system, which is very effective for reducing the beam size without beam loss [1]. It has advantage over electron cooling in cooling low intensity beam with large emittance and momentum spread, and is required for precise study of the decay properties of RIB (Radioactive Ion Beam) by use of the SMS (Schottky Mass Spectrometry) method [2]. This paper mainly concerns on cooling of primary beam and its secondary beam, pointing out the range of mass-to-charge spread that could be cooled for secondary particles. Meanwhile, TOF cooling combined with filter cooling was also studied. The simulation results provide theoretical supports for analysing different ions circulating in the ring at the same time in the experiments.