The MAJORANA DEMONSTRATOR will search for neutrinoless-double-beta decay (0νββ) in 76Ge, while establishing the feasibility of a future tonne-scale germanium-based 0νββ experiment, and performing searches for new physics beyond the Standard Model. The experiment, currently under construction at the Sanford Underground Research Facility in Lead, SD, will consist of a pair of modular high-purity germanium detector arrays housed inside of a compact copper, lead, and polyethylene shield. Through a combination of strict materials qualifications and assay, low-background design, and powerful background rejection techniques, the Demonstrator aims to achieve a background rate in the 0νββ region of interest (ROI) of no more than 3 counts in the 0νββ-decay ROI per tonne of target isotope per year (cnts/(ROI-t-y)). The current status of the Demonstrator is discussed, as are plans for its completion.
Green, M. P., Abgrall, N., Aguayo, E., Avignone, F. T., Barabash, A. S., Bertrand, F. E., … Yumatov, V. (2015). The MAJORANA DEMONSTRATOR for 0νββ: Current Status and Future Plans. In Physics Procedia (Vol. 61, pp. 232–240). Elsevier B.V. https://doi.org/10.1016/j.phpro.2014.12.038