The MAJORANA DEMONSTRATOR: A Search for Neutrinoless Double-beta Decay of Germanium-76

被引：2

作者：

Elliott, S. R. ^{[1
]}

Abgrall, N. ^{[2
]}

Aguayo, E. ^{[3
]}

Avignone, F. T., III ^{[4
,5
]}

Barabash, A. S. ^{[6
]}

Bertrand, F. E. ^{[5
]}

Boswell, M. ^{[1
]}

Brudanin, V.

Busch, M. ^{[8
,9
]}

Caldwell, A. S. ^{[10
]}

Chan, Y-D. ^{[2
]}

Christofferson, C. D. ^{[10
]}

Combs, D. C. ^{[9
,11
]}

Detwiler, J. A. ^{[12
,13
]}

Doe, P. J. ^{[12
,13
]}

Efremenko, Yu. ^{[14
]}

Egorov, V. ^{[7
]}

Ejiri, H. ^{[15
]}

Esterline, J. ^{[8
,9
]}

Fast, J. E. ^{[3
]}

Finnerty, P. ^{[9
,16
]}

Fraenkle, F. M. ^{[9
,16
]}

Galindo-Uribarri, A. ^{[5
]}

Giovanetti, G. K. ^{[9
,16
]}

Goett, J. ^{[1
]}

Green, M. P. ^{[9
,16
]}

Gruszko, J. ^{[12
,13
]}

Guiseppe, V. E. ^{[17
]}

Gusev, K. ^{[7
]}

Hailin, A. L. ^{[18
]}

Hazama, R. ^{[15
]}

Hegai, A.

Henning, R. ^{[9
,16
]}

Hoppe, E. W. ^{[3
]}

Howard, S. ^{[10
]}

Howe, M. A. ^{[9
,16
]}

Keeter, K. J. ^{[19
]}

Kidd, M. F. ^{[20
]}

Kochetov, O.

Konovalov, S. I. ^{[6
]}

Kouzes, R. T. ^{[3
]}

LaFerriere, B. D. ^{[3
]}

Leon, J. ^{[12
,13
]}

Leviner, L. E. ^{[9
,11
]}

Loach, J. C. ^{[21
]}

MacMullin, S. ^{[9
,16
]}

Martin, R. D. ^{[2
]}

Mertens, S. ^{[2
]}

Mizouni, L. ^{[3
,4
]}

Nomachi, M. ^{[15
]}

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87544 USA

[2] Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA USA

[3] Pacific NW Natl Lab, Richland, WA USA

[4] Univ S Carolina, Dept Phys & Astron, Columbia, SC USA

[5] Oak Ridge Natl Lab, Oak Ridge, TN USA

[6] Inst Theoret & Expt Phys, Moscow, Russia

[7] Joint Nucl Res Inst, Dubna, Russia

[8] Duke Univ, Dept Phys, Durham, NC USA

[9] Triangle Univ Nucl Lab, Durham, NC USA

[10] S Dakata Sch Mines & Technol, Rapid City, SD USA

[11] N Carolina State Univ, Dept Phys, Raleigh, NC USA

[12] Univ Washington, Ctr Exp Nucl Phys & Astrophys, Seattle, WA USA

[13] Univ Washington, Dept Phys, Seattle, WA USA

[14] Univ Tennessee, Dept Phys & Astron, Knoxville, TN USA

[15] Osaka Univ, Res Ctr Nucl Phys, Osaka, Japan

[16] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC USA

[17] Univ S Dakota, Dept Earth Sci & Phys, Vermillion, SD USA

[18] Univ Alberta, Ctr Particle Theory, Edmonton, AB, Canada

[19] Black Hills State Univ, Dept Phys, Spearfish, SD USA

[20] Tennessee Technol Univ, Cookeville, TN USA

[21] Shanghai Jiao Tong Univ, Shanghai, Peoples R China

[22] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA USA

来源：

WORKSHOP ON CALCULATION OF DOUBLE-BETA-DECAY MATRIX ELEMENTS (MEDEX '13) | 2013年 / 1572卷

基金：

美国国家科学基金会; 俄罗斯基础研究基金会;

关键词：

neutrino; double-beta; germanium;

D O I：

10.1063/1.4856546

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The MAJORANA collaboration is searching for neutrinoless double beta decay using Ge-76, which has been shown to have a number of advantages in terms of sensitivities and backgrounds. The observation of neutrinoless double-beta decay would show that lepton number is violated and that neutrinos are Majorana particles and would simultaneously provide information on neutrino mass. Attaining sensitivities for neutrino masses in the inverted hierarchy region, 15 - 50 meV, will require large, tonne-scale detectors with extremely low backgrounds, at the level of similar to 1 count/t-y or lower in the region of the signal. The MAJORANA collaboration, with funding support from DOE Office of Nuclear Physics and NSF Particle Astrophysics, is constructing the DEMONSTRATOR, an array consisting of 40 kg of p-type point-contact high-purity germanium (HPGe) detectors, of which similar to 30 kg will be enriched to 87% in Ge-76. The DEMONSTRATOR is being constructed in a clean room laboratory facility at the 4850' level (4300 m.w.e.) of the Sanford Underground Research Facility (SURF) in Lead, SD. It utilizes a compact graded shield approach with the inner portion consisting of ultra-clean Cu that is being electroformed and machined underground. The primary aim of the DEMONSTRATOR is to show the feasibility of a future tonne-scale measurement in terms of backgrounds and scalability.

引用

页码：45 / 48

页数：4

共 50 条

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