Filed in: Main.Osc SNS Home Page · Modified on : Wed, 26 Sep 12
The Spallation Neutron Source (SNS), located at Oak Ridge National Laboratory, will be coming online over the next few years and will herald a new era in neutron research. In addition to providing fluxes of high-intensity neutrons, the SNS will also be a prodigious source of neutrinos from π+ and μ+ decay at rest. This neutrino beam can be used for high-precision neutrino oscillation experiments. The neutrino flux from the SNS is known extremely well and includes anti-νμ and νe from μ+ decay at rest, as well as the 30 MeV mono-energetic νμ from π+ decay at rest. The mono-energetic νμ can be used to test for the existence of light sterile neutrinos via the neutral-current reaction νμ C → νμ C*(15.11). An oscillation or suppression of this reaction would be direct evidence for sterile neutrinos.
The OscSNS detector is based on the LSND and MiniBooNE detectors and can be built for ~ $12M (or ~ $8M if the MiniBooNE oil and phototubes are reused and ~ $5M if the tank size is reduced). OscSNS will achieve the world's best neutrino oscillation sensitivities for anti-νμ → anti-νe oscillations, νμ → νe oscillations, and νμ → νX oscillations at a Δm2 scale of > ~0.1 eV2. In addition, OscSNS can make the world's best measurements of νe e → νe e elastic scattering and νe C → e- N charged-current scattering.