A simulation of the proposed MOMENT experiment estimates a 1 sigma precision of roughly 10 to 15 degrees on delta_CP, improving to about 12 degrees or better when MOMENT data are combined with DUNE and T2HK.
MOMENT: a muon-decay medium-baseline neutrino beam facility
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abstract
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.
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Precision measurements on $\delta_\text{CP}$ in MOMENT
A simulation of the proposed MOMENT experiment estimates a 1 sigma precision of roughly 10 to 15 degrees on delta_CP, improving to about 12 degrees or better when MOMENT data are combined with DUNE and T2HK.