The acceleration of muons in the neutrino factory

This paper first gives a brief recall, on the one hand, of the status of RLA based muon acceleration designs and of the major reasons that have motivated, in the US and in EU, the exploration of alternative ways of muon acceleration, and on the other hand, of the fixed field synchrotron (FFAG) based Japan NuFact design. This is followed by an overview of the most recent activities regarding the alternative technique of FFAGs, their promises, and the present goals of the research in this domain.