Nonlinear dynamics optimization with particle swarm algorithm for CANDLE storage ring low emittance lattice

Recently developed low emittance lattice of CANDLE storage ring was suffering from the typical issue of complicated nonlinear beam dynamics resulting in lowered dynamic and momentum apertures. In order to improve these characteristics of the new lattice, an optimization of nonlinear dynamics, by the usage of multi-objective particle swarm algorithm, was performed. Two optimization scenarios, with different number of objectives, were considered. This paper presents the main aspects and results of the conducted optimization procedure.