GEANT4 Target Simulations for the ISIS Muon Facility

ISIS is a world leading centre for research in the physical and life sciences at the Rutherford Appleton Laboratory. ISIS is used primarily for neutron production but it is also an intense source of pulsed muons. Muon target optimisation studies were performed with the Geant4 code as restrictions are imposed on target thickness, as this will affect the proton transmission to the second neutron target. In this paper we investigate the impact of incident proton energy on muon production and possible target geometries and target materials.