40-80 MHz MUON FRONT-END FOR THE NEUTRINO FACTORY DESIGN STUDY

To understand better the neutrino properties, machines able to produce an order of 10 21 neutrinos per year have to be built. One of the proposed machines is called a neutrino factory. In this scenario, muons produced by the decay of pions coming from the interaction of a proton beam onto a target are accelerated to energies of several GeV and injected in a storage ring where they will decay in neutrinos. The so-called front-end section of the neutrino factory is conceived to reduce the transverse divergenceof the muon beam and to adapt its temporal structure to the acceptance of the downstreamaccelerator to minimize losses. We present a re-evaluation of the muon front-end scenario which used 40-80 MHz radio-frequency cavities capturing one sign at a time in a single-bunch to bucket mode. The standard software environment of the International Design Study for the Neutrino Factory (IDS-NF) has been used, for comparison of its performance with the IDS-NF baseline front-end design which operates with higher frequency (330-200 MHz) capturing in a train of alternated sign, the muons bunches.