Status of the Majorana Demonstrator

Journal Article · Thu Aug 06 00:00:00 EDT 2015 · Nuclear and Particle Physics Proceedings

DOI:https://doi.org/10.1016/j.nuclphysbps.2015.06.019· OSTI ID:1248627

Cuesta, C. ^[1]; Abgrall, N. ^[2]; Arnquist, I. J. ^[3]; Avignone, III, F. T. ^[4]; Barabash, A. S. ^[5]; Bertrand, F. E. ^[6]; Brudanin, V. ^[7]; Busch, M. ^[8]; Buuck, M. ^[1]; Byram, D. ^[9]; Caldwell, A. S. ^[10]; Chan, Y. -D. ^[2]; Christofferson, C. D. ^[10]; Detwiler, J. A. ^[1]; Efremenko, Yu. ^[11]; Ejiri, H. ^[12]; Elliott, S. R. ^[13]; Galindo-Uribarri, A. ^[6]; Giovanetti, G. K. ^[14]; Goett, J. ^[13] ; Green, M. P. ^[6]; Gruszko, J. ^[1]; Guinn, I. S. ^[1]; Guiseppe, V. E. ^[15]; Henning, R. ^[14]; Hoppe, E. W. ^[3]; Howard, S. ^[10]; Howe, M. A. ^[14]; Jasinski, B. R. ^[9]; Keeter, K. J. ^[16]; Kidd, M. F. ^[17]; Konovalov, S. I. ^[5]; Kouzes, R. T. ^[3]; LaFerriere, B. D. ^[3]; Leon, J. ^[1]; MacMullin, J. ^[14]; Martin, R. D. ^[9]; Meijer, S. J. ^[14]; Mertens, S. ^[2]; Orrell, J. L. ^[3]; O'Shaughnessy, C. ^[14]; Overman, N. R. ^[3]; Poon, A. W. P. ^[2]; Radford, D. C. ^[6]; Rager, J. ^[14]; Rielage, K. ^[13]; Robertson, R. G. H. ^[1]; Romero-Romero, E. ^[18]; Schmitt, C. ^[2]; Shanks, B. ^[14]; Shirchenko, M. ^[7]; Snyder, N. ^[9]; Suriano, A. M. ^[10]; Tedeschi, D. ^[15]; Timkin, V. ^[7]; Trimble, J. E. ^[14]; Varner, R. L. ^[6]; Vasilyev, S. ^[7]; Vetter, K. ^[19]; Vorren, K. ^[14]; White, B. R. ^[6]; Wilkerson, J. F. ^[20]; Wiseman, C. ^[15]; Xu, W. ^[13]; Yakushev, E. ^[7]; Yu, C. -H. ^[6]; Yumatov, V. ^[5]

---

1. Univ. of Washington, Seattle, WA (United States)
2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
3. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
4. Univ. of South Carolina, Columbia, SC (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
5. Institute for Theoretical and Experimental Physics, Moscow (Russia)
6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
7. Joint Institute for Nuclear Research, Dubna (Russia)
8. Duke Univ., Durham, NC (United States); Triangle Univ. Nuclear Lab., Durham, NC (United States)
9. Univ. of South Dakota, Vermillion, SD (United States)
10. South Dakota School of Mines and Technology, Rapid City, SD (United States)
11. Univ. of Tennessee, Knoxville, TN (United States)
12. Osaka Univ., Osaka (Japan)
13. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
14. Univ. of North Carolina, Chapel Hill, NC (United States); Triangle Univ. Nuclear Lab., Durham, NC (United States)
15. Univ. of South Carolina, Columbia, SC (United States)
16. Black Hills State Univ., Spearfish, SD (United States)
17. Tennessee Technological Univ., Cookeville, TN (United States)
18. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
19. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
20. Univ. of North Carolina, Chapel Hill, NC (United States); Triangle Univ. Nuclear Lab., Durham, NC (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

In this study, 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 ⁷⁶Ge. 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. Lastly, the current status of the Demonstrator is discussed, as are plans for its completion.

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• Contributing Organization: The Majorana Collaboration
• Grant/Contract Number: AC52-06NA25396; AC05-00OR22725
• OSTI ID: 1248627
• Alternate ID(s): OSTI ID: 1265253
• Report Number(s): LA-UR-14-29703; PII: S2405601415003612
• Journal Information: Nuclear and Particle Physics Proceedings, Vol. 265-266, Issue C; ISSN 2405-6014
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
neutrinoless double-beta decay
germanium detector
majorana
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY