Abstract

A sign-selected dichromatic neutrino beam using conventional magnets is described. The beam has a solid angle acceptance of ten μsr and can focus charged hadrons up to a momentum of 170 GeV/ c. The beam can be used to select either neutrinos or anti-neutrinos: when focused for neutrinos, the anti-neutrino contamination is less than 0.001 for neutrino momenta greater than 40 GeV/ c; when the beam is focused for anti-neutrinos, the neutrino background is 0.01 over most of the momentum range. The beam has a provision for momentum selection which produces a dichromatic neutrino beam — a beam focused into two momentum bands.

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