The Majorana Demonstrator: Progress towards showing the feasibility of a tonne-scale 76 Ge neutrinoless double-beta decay experiment


Journal Article

The Majorana Demonstrator will search for the neutrinoless double-beta decay (0vββ) of the 76Ge 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 Demonstrator is being assembled at the 4850 foot level of the Sanford Underground Research Facility in Lead, South Dakota. The array will be contained in a low-background environment and surrounded by passive and active shielding. The goals for the Demonstrator are: demonstrating a background rate less than 3 t-1 y-1 in the 4 keV region of interest (ROI) surrounding the 2039 keV 76Ge endpoint energy; establishing the technology required to build a tonne-scale germanium based double-beta decay experiment; testing the recent claim of observation of 0vββ [1]; and performing a direct search for light WIMPs (3-10 GeV/c2). © Published under licence by IOP Publishing Ltd.

Full Text

Duke Authors

Cited Authors

  • Finnerty, P; Aguayo, E; Amman, M; Avignone, FT; Barabash, AS; Barton, PJ; Beene, JR; Bertrand, FE; Boswell, M; Brudanin, V; Busch, M; Chan, YD; Christofferson, CD; Collar, JI; Combs, DC; Cooper, RJ; Detwiler, JA; Doe, PJ; Efremenko, Y; Egorov, V; Ejiri, H; Elliott, SR; Esterline, J; Fast, JE; Fields, N; Fraenkle, FM; Galindo-Uribarri, A; Gehman, VM; Giovanetti, GK; Green, MP; Guiseppe, VE; Gusey, K; Hallin, AL; Hazama, R; Henning, R; Hoppe, EW; Horton, M; Howard, S; Howe, MA; Johnson, RA; Keeter, KJ; Kidd, MF; Knecht, A; Kochetov, O; Konovalov, SI; Kouzes, RT; Laferriere, BD; Leon, J; Leviner, LE; Loach, JC; Luke, PN; Macmullin, S; Marino, MG; Martin, RD; Merriman, JH; Miller, ML; Mizouni, L; Nomachi, M; Orrell, JL; Overman, NR; Perumpilly, G; Phillips, DG; Poon, AWP; Radford, DC; Rielage, K; Robertson, RGH; Ronquest, MC; Schubert, AG; Shima, T; Shirchenko, M; Snavely, KJ; Steele, D; Strain, J; Timkin, V; Tornow, W; Varner, RL; Vetter, K; Vorren, K; Wilkerson, JF; Yakushev, E; Yaver, H; Young, AR; Yu, CH; Yumatov, V

Published Date

  • January 1, 2014

Published In

Volume / Issue

  • 485 / 1

Electronic International Standard Serial Number (EISSN)

  • 1742-6596

International Standard Serial Number (ISSN)

  • 1742-6588

Digital Object Identifier (DOI)

  • 10.1088/1742-6596/485/1/012042

Citation Source

  • Scopus