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

被引:1
|
作者
Finnerty, P. [1 ,2 ]
Aguayo, E. [3 ]
Amman, M. [4 ]
Avignone, F. T., III [5 ,6 ]
Barabash, A. S. [7 ]
Barton, P. J. [8 ]
Beene, J. R. [6 ]
Bertrand, F. E. [6 ]
Boswell, M. [9 ]
Brudanin, V.
Busch, M. [2 ,11 ]
Chan, Y-D [8 ]
Christofferson, C. D.
Collar, J. I.
Combs, D. C. [2 ,14 ]
Cooper, R. J. [6 ]
Detwiler, J. A. [8 ]
Doe, P. J. [15 ]
Efremenko, Yu [16 ]
Egorov, V. [10 ]
Ejiri, H. [17 ]
Elliott, S. R. [9 ]
Esterline, J. [2 ,11 ]
Fast, J. E. [3 ]
Fields, N. [13 ]
Fraenkle, F. M. [1 ,2 ]
Galindo-Uribarri, A. [6 ]
Gehman, M. [9 ]
Giovanetti, G. K. [1 ,2 ]
Green, M. P. [1 ,2 ]
Guiseppe, V. E. [18 ]
Gusey, K. [10 ]
Hallin, A. L. [19 ]
Hazama, R. [17 ]
Henning, R. [1 ,2 ]
Hoppe, E. W. [3 ]
Horton, M. [12 ]
Howard, S. [12 ]
Howe, M. A. [1 ,2 ]
Johnson, R. A. [15 ]
Keeter, K. J. [20 ]
Kidd, M. F. [9 ]
Knecht, A. [15 ]
Kochetov, O. [10 ]
Konovalov, S. I. [7 ]
Kouzes, R. T. [1 ,3 ]
LaFerriere, B. D. [3 ]
Leon, J. [15 ]
Leviner, L. E. [2 ,14 ]
Loach, J. C. [8 ]
机构
[1] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27514 USA
[2] Triangle Univ, Nucl Lab, Durham, NC 27703 USA
[3] Pacific Northwest Natl Lab, Richland, WA 99353 USA
[4] Lawrence Berkeley Natl Lab, Div Engn, Berkeley, CA 94702 USA
[5] Univ South Carolina, Dept Phys & Astron, Columbia, SC 29203 USA
[6] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA
[7] Inst Theoret & Expt Phys, Moscow, Russia
[8] Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94702 USA
[9] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[10] Joint Nucl Res Inst, Dubna, Russia
[11] Duke Univ, Dept Phys, Durham, NC 27706 USA
[12] South Dakota Sch Mines & Technol, Rapid City, SD 57701 USA
[13] Univ Chicago, Dept Phys, Chicago, IL 60637 USA
[14] North Carolina State Univ, Dept Phys, Raleigh, NC USA
[15] Univ Washington, Ctr Expt Nucl Phys & Astrophys, Dept Phys, Seattle, WA 98195 USA
[16] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA
[17] Osaka Univ, Res Ctr Nucl Phys, Dept Phys, Suita, Osaka 565, Japan
[18] Univ S Dakota, Dept Phys, Vermillion, SD 57069 USA
[19] Univ Alberta, Ctr Particle Phys, Edmonton, AB T6G 2M7, Canada
[20] Black Hills State Univ, Dept Phys, Spearfish, SD USA
[21] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA
基金
美国国家科学基金会;
关键词
SEARCH;
D O I
10.1088/1742-6596/485/1/012042
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The MAJORANA DEMONSTRATOR will search for the neutrinoless double-beta decay (0 nu beta beta) of the Ge-76 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 (ROT) surrounding the 2039 keV Ge-76 endpoint energy; establishing the technology required to build a tonne-scale germanium based double-beta decay experiment; testing the recent claim of observation of 0 nu beta beta [I]; and performing a direct search for light WIMPs (3-10 GeV/c(2)).
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