A geometrical method for 3-D modeling of the magnetic field in scaling and non-scaling FFAG magnets has been installed in the ray-tracing code Zgoubi. The method in particular allows a good simulation of field fall-offs and of merging fields in configurations of neighboring large magnets, while using realistic models of magnetic fields. That yields an efficient tool for lattice design and optimizations, and for 6-D tracking studies.
It is applied for illustration to the simulation of an acceleration cycle in a 150~MeV radial sector proton FFAG.
|
