Abstract
The Karmen (Karlsruhe–Rutherford intermediate energy neutrino) experiment, conducted at the Isis spallation neutron facility, is designed to investigate fundamental properties of neutrinos and their interactions with matter. Low energy neutrinos with energies up to 50 MeV emitted by the Isis pulsed neutrino source are detected by a 56 t high resolution liquid scintillation calorimeter. Clear neutrino signatures allow a reliable search for neutrino oscillations of the type v μ → v e and v μ → v e as well as a detailed investigation of neutrino–nucleus interactions in an energy range important for astrophysics. Results from the first 3 years of the Karmen experiment are presented.