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Title: Analysis techniques for background rejection at the Majorana Demonstrator

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.
Authors:
 [1] ;  [2] ;  [2] ;  [2] ;  [2]
  1. University of Washington
  2. Los Alamos National Laboratory
Publication Date:
OSTI Identifier:
1184612
Report Number(s):
LA-UR-15-24399
DOE Contract Number:
AC52-06NA25396
Resource Type:
Conference
Resource Relation:
Conference: Low Radioactivity Techniques ; 2015-03-18 - 2015-03-20 ; Seattle, Washington, United States
Research Org:
Los Alamos National Laboratory (LANL)
Sponsoring Org:
LDRD
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS Atomic and Nuclear Physics