Computer simulation of beam crystallization under non-ideal fields and perturbations in a storage ring

In this paper, we have studied the ion beam crystallization in a storage ring, by taking into account a non-ideal field and perturbations, with the help of computer simulations. The results show that crystalline structures can still be obtained with realistic tolerances, though a longer crystallization time seems to be required. Due to close orbit distortions, the crystalline structures obtained are shifted away from the reference orbit. The maximum allowable tolerances for crystalization are also estimated.