An Electron Model of an FFAG Muon Accelerator

Parameters are derived and exhibited for the lattice and RF system of an electron model (10-20 MeV) of a non-scaling FFAG ring for accelerating muons. Spacings, magnet types and dimensions, and number of cells are presented. The model circumference is 10 meters, and the magnet apertures are 12 mm- 20 mm. The parameters of the magnetic components are compared to those of existing magnets. The tune variation with momentum is similar to that in a full machine and would allow the study of resonance crossing. The consequences of misaligned magnets are studied by simulation. The variation of orbit length with momentum is less than 20 mm and would allow the study of acceleration outside a bucket. A 100 mm straight section, in each of 33 cells, is adequately long for an RF cavity operating at 3 GHz. The accelerating voltage needed is calculated. Practical RF system design issues, e.g. RF power, and the limit on the bunch population due to beam loading are estimated. Geneva, Switzerland