The MAJORANA DEMONSTRATOR search for neutrinoless double beta decay

Conference · Tue Jan 24 04:00:00 EST 2017 · Proceedings of XIII International Conference on Heavy Quarks and Leptons — PoS(HQL 2016)

DOI:https://doi.org/10.22323/1.274.0014· OSTI ID:2202431

Cuesta Soria, Clara

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: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 2202431
• Conference Information: Journal Name: Proceedings of XIII International Conference on Heavy Quarks and Leptons — PoS(HQL 2016)
• Country of Publication: United States
• Language: English