  nuSTORM (Neutrinos from STORed Muons) is a proposed storage ring facility to
deliver beams of muon antineutrinos and electron neutrinos from positive muon
decays (muon neutrinos and electron antineutrinos from negative muon decays),
with a central muon momentum of 3.8 GeV/c and a momentum acceptance of 10%. The
facility will allow searches for eV-scale sterile neutrinos at better than 10
sigma sensitivity, it will be able to provide measurements of neutrino and
antineutrino-nucleus scattering cross sections with percent-level precision and
will serve as a first step towards developing muon accelerators for particle
physics. We report on the physics capabilities of the nuSTORM facility and we
specify the main features of its design, which does not require any new
technology. The flux of the neutrino beam can be determined with percent-level
accuracy to perform cross-section measurements for future neutrino oscillation
experiments and to resolve the hints for eV-scale sterile neutrinos. nuSTORM
may be considered as a first step towards a Neutrino Factory and a Muon
Collider.
