Particle-core Analysis of Beam Halos in a Synchrotron
نویسندگان
چکیده
A simple particle-core model for circular accelerators has been constructed assuming that dispersion effects are relatively weak. This model is applicable to a large class of high-intensity rings designed for modest density applications such as spallation neutron sources. Applying this model to isotropic beams in a smooth ring, halo formation processes in the presence of dispersion are investigated. In the analysis, it is found that dispersion matching is essentially important to suppress horizontal beam widening in injection. With dispersion matching, a halo is formed by the particlecore resonance, and its width is a little narrower than that in a straight channel. Dispersion effect on halo formation in high-density situations is also discussed.
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