The MAJORANA DEMONSTRATOR: A Search for Neutrinoless Double-beta Decay   of Germanium-76
  The observation of neutrinoless double-beta decay would determine whether the neutrino is a Majorana particle and provide information on the absolute scale of neutrino mass. The MAJORANA Collaboration is constructing the DEMONSTRATOR, an array of germanium detectors, to search for neutrinoless double-beta decay of 76-Ge. The DEMONSTRATOR will contain 40 kg of germanium; up to 30 kg will be enriched to 86% in 76-Ge. The DEMONSTRATOR will be deployed deep underground in an ultra-low-background shielded environment. Operation of the DEMONSTRATOR aims to determine whether a future tonne-scale germanium experiment can achieve a background goal of one count per tonne-year in a 4-keV region of interest around the 76-Ge neutrinoless double-beta decay Q-value of 2039 keV. 
MAJORANA Collaboration: A.G. Schubert, E. Aguayo, F.T. Avignone III,   H.O. Back, A.S. Barabash, M. Bergevin, F.E. Bertrand,...
nucl-ex