DYNAMIC APERTURE STUDIES FOR THE SRRC STORAGE RING WITH GAUSSIAN SEXTUPOLES

In an attempt to maximize the dynamic aperture at the SRRC storage ring the effect of Gaussian sextupoles were studied to replace the normal sextupole families. In Gaus-sian sextupoles the fields are partially truncated at large distance from the axis to reduce destabilizing, nonlinear effects on particles with large betatron amplitudes. The re-sults of these studies will be described including the im-provement on dynamic aperture for on-momentum parti-cles in an unperturbed lattice. Furthermore, tracking re-sults in the presence of magnet multipole errors will be presented as well as those involving tracking of off-energy particles.