The MAJORANA DEMONSTRATOR is a germanium detector array with the primary goal of demonstrating the feasibility of tonne-scale experiments to search for double beta decay in germanium-76.
“The MAJORANA DEMONSTRATOR will search for the neutrinoless double-beta decay...
of the Ge isotope with a mixed array of enriched and natural germanium detectors.
The observation of this rare decay would indicate the neutrino is its own anti-particle,
demonstrate that lepton number is not conserved, and provide information on the
absolute mass-scale of the neutrino.”
-The MAJORANA DEMONSTRATOR: Progress Towards Showing the Feasibility of a 76Ge neutrinoless double-beta decay experiment. LA-UR-12-24950