Status of the PRISM FFAG Design for the Next Generation Muon-to-Electron Conversion Experiment

The PRISMTask Force continues to study high intensity and high quality muonbeams needed for next generation lepton flavour violation experiments. In the PRISMcase such beams have been proposed to be produced by sending a short proton pulse to a pionproduction target, capturing pionsand performing RF phase rotation on the resulting muonbeam in an FFAG ring. This paper summarizes the current status of the PRISMdesign obtained by the Task Force. In particular various designs for the PRISMFFAG ring are discussed and their performance compared to the baseline one, the injection/extraction systems and matching to the solenoid channels upstream and downstream of the FFAG ring are presented. The feasibility of the construction of the PRISMsystem is discussed.