A thin target scheme for the Muon source

A pion production source using a thin target and a recirculating storage ring is considered. The potential advantages of the scheme are: i) the thin target could allow a better collection eciency; ii) the proton beam dump is avoided; iii) light targets could be used. The disadvantages are: i) the high beam current stored in the recirculator, ii) constraints on timing. This scheme could be used for the Neutrino Factory but not for Muon Colliders.