Analysis techniques for background rejection at the Majorana Demonstrator

Conference · Thu Jun 11 00:00:00 EDT 2015

OSTI ID:1184612

Cuestra, Clara ^[1]; Rielage, Keith Robert ^[2]; Elliott, Steven Ray ^[2]; Xu, Wenqin ^[2]; Goett, John Jerome III ^[2]

---

1. University of Washington
2. Los Alamos National Laboratory

The MAJORANA Collaboration is constructing the MAJORANA DEMONSTRATOR, an ultra-low background, 40-kg modular HPGe detector array to search for neutrinoless double beta decay in ⁷⁶Ge. In view of the next generation of tonne-scale Ge-based 0νββ-decay searches that will probe the neutrino mass scale in the inverted-hierarchy region, a major goal of the MAJORANA 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. The background rejection techniques to be applied to the data include cuts based on data reduction, pulse shape analysis, event coincidences, and time correlations. The Point Contact design of the DEMONSTRATOR's germanium detectors allows for significant reduction of gamma background.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE Laboratory Directed Research and Development (LDRD) Program
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 1184612
• Report Number(s): LA-UR-15-24399
• Resource Relation: Conference: Low Radioactivity Techniques ; 2015-03-18 - 2015-03-20 ; Seattle, Washington, United States
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Atomic and Nuclear Physics