The Majorana Demonstrator search for neutrinoless double beta decay

Conference · Sun Dec 11 23:00:00 EST 2016

OSTI ID:1415097

Cuesta, C.; Buuck, M.; Detwiler, Jason A.; Gruszko, J.; Guinn, I.; Leon, Jonathan D.; Robertson, R. G. H.; Abgrall, N.; Bradley, A. W.; Chan, Yuen-Dat; Mertens, S.; Poon, Alan W.; Vetter, K.; Arnquist, Isaac J.; Hoppe, Eric W.; Kouzes, Richard T.; Orrell, John L.; Avignone, Frank T.; Barabash, Alexander S.; Konovalov, S. ; Yumatov, Vladimir; Bertrand, F.; Galindo-Uribarri, A.; Radford, D. C.; Varner, R. L.; Yu, Chang-Hong; Brudanin, V.; Shirchenko, M.; Vasilyev, Sergey; Yakushev, E.; Zhitnikov, I.; Busch, Matthew; Caldwell, Tom S.; Gilliss, T.; Henning, Reyco; Howe, M. A.; MacMullin, J.; Meijer, S. J.; O'Shaughnessy, C.; Rager, J.; Shanks, B.; Trimble, J. E.; Vorren, Kris R.; Xu, Wenqin; Christofferson, C. D.; Dunagan, C.; Suriano, Anne-Marie; Chu, P. H.; Elliott, Scott; Massarczyk, Ralph; Rielage, Keith; White, B. R.; Efremenko, Yuri; Lopez, Andrew M.; Ejiri, H.; Fullmer, Alexander; Giovanetti, Grahan K.; Green, M. P.; Guiseppe, V. E.; Tedeschi, D.; Wiseman, Clint; Jasinski, B. R.; Keeter, K.; Kidd, M. F.; Martin, Ryan D.; Romero-Romero, E.; Wilkerson, J. F.

The MAJORANA Collaboration is constructing the MAJORANA DEMONSTRATOR, an ultra-low background, modular, HPGe detector array with a mass of 44.8-kg (29.7 kg enriched 88% in 76Ge) to search for neutrinoless double beta decay in 76Ge. The next generation of tonnescale Ge-based neutrinoless double beta decay searches will probe the neutrino mass scale in the inverted-hierarchy region. The MAJORANA DEMONSTRATOR is envisioned to demonstrate a path forward to achieve a background rate at or below 1 count/tonne/year in the 4 keV region of interest around the Q-value of 2039 keV. The MAJORANA DEMONSTRATOR follows a modular implementation to be easily scalable to the next generation experiment. First data taken with the DEMONSTRATOR are introduced here.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1415097
• Report Number(s): PNNL-SA-122878; 830403000
• Country of Publication: United States
• Language: English