Status of the MAJORANA Demonstrator
C. Cuesta, N. Abgrall, I.J. Arnquist, F.T. Avignone III, A.S., Barabash, F.E. Bertrand, V. Brudanin, M. Busch, M. Buuck, D. Byram, A.S., Caldwell, Y-D. Chan, C.D. Christofferson, J.A. Detwiler, Yu. Efremenko, H., Ejiri, S.R. Elliott, A. Galindo-Uribarri, G.K. Giovanetti
TL;DR
The MAJORANA Demonstrator aims to develop ultra-low background germanium detectors to search for neutrinoless double-beta decay, providing insights for future large-scale experiments in neutrino physics.
Contribution
This paper reports the current status and future plans of the MAJORANA Demonstrator, a key step toward achieving ultra-low background levels for neutrinoless double-beta decay searches.
Findings
Progress in constructing the detector array
Achieved background reduction goals
Plans for completing the experiment
Abstract
The MAJORANA Collaboration is constructing the MAJORANA Demonstrator, an ultra-low background, 40-kg modular high purity Ge detector array to search for neutrinoless double-beta decay in Ge. In view of the next generation of tonne-scale Ge-based neutrinoless double-beta decay searches that will probe the neutrino mass scale in the inverted-hierarchy region, a major goal of the Demonstrator is to demonstrate a path forward to achieving a background rate at or below 1 count/tonne/year in the 4 keV region of interest around the Q-value at 2039 keV. The current status of the Demonstrator is discussed, as are plans for its completion.
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Taxonomy
TopicsNeutrino Physics Research · Particle physics theoretical and experimental studies · Particle accelerators and beam dynamics