  Neutrino beam with about 300 MeV in energy, high-flux and medium baseline is
considered a rational choice for measuring CP violation before the more
powerful Neutrino Factory will be built. Following this concept, a unique
neutrino beam facility based on muon-decayed neutrinos is proposed. The
facility adopts a continuous-wave proton linac of 1.5 GeV and 10 mA as the
proton driver, which can deliver an extremely high beam power of 15 MW. Instead
of pion-decayed neutrinos, unprecedentedly intense muon-decayed neutrinos are
used for better background discrimination. The schematic design for the
facility is presented here, including the proton driver, the assembly of a
mercury-jet target and capture superconducting solenoids, a pion/muon beam
transport line, a long muon decay channel of about 600 m and the detector
concept. The physics prospects and the technical challenges are also discussed.
