FNAL Feasibility Study on a Neutrino Source Based on a Muon Storage Ring

Neutrino Sources Based on Intense Muon Beams

Neutrino Sources based on Muon storage rings have found a lot of interest in the High Energy Physics community (physics study). The strong point is the capability of providing very intense, very well collimated neutrino beams. Based on the work being done by the neutrino factory and muon collider collaboration, such a facility looks very similar in general to what would have to be build for a muon collider. An intense proton beam hits a target, pions decay into muons in long decay channels, the muons have to be cooled and then accelerated and finally get injected into a storage ring where the decay.

On the other hand will this specific application of an intense muon source relax a number of critical parameters. This will smooth the way towards all the different developments that will have to be done, before such a source can seriously be considered. In order to achieve the required transverse emittance, much less cooling is required because the neutrino beam divergence will be dominated by the decay kinematics of the muon and the emittance should only contribute a fraction of that. The total acceleration and the beam power will be less too, because of the lower average intensity required, which will relax the rf system. Both these arguments are good examples to investigate this application in much greater detail to develop an R&D plan for the future of such a facility.

In order to do so, a site specific study has been initiated, which should develop a preliminary design of such a facility based on the more general design being studied by the collaboration. This study will take into account specific circumstances represented by the Fermi Lab site as well as the existing Fermi Lab infrastructure. The study will also investigate a very specific application of such a muon source with a very well defined maximum intensity, energy and a certain baseline choice.

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Last Updated: 2 June 2000