Abstract
The Majorana Collaboration is constructing a system containing 40 kg of HPGe detectors to demonstrate the feasibility and potential of a future tonne-scale experiment capable of probing the neutrino mass scale in the inverted-hierarchy region. To realize this, a major goal of the Majorana Demonstrator is to demonstrate a path forward to achieving a background rate at or below 1 cnt/(ROI-t-y) in the 4 keV region of interest around the Q-value at 2039 keV. This goal is pursued through a combination of a significant reduction of radioactive impurities in construction materials with analytical methods for background rejection, for example using powerful pulse shape analysis techniques profiting from the p-type point contact HPGe detectors technology. The effectiveness of these methods is assessed using simulations of the different background components whose purity levels are constrained from radioassay measurements.
Originalsprache | Englisch |
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Seiten (von - bis) | 821-827 |
Seitenumfang | 7 |
Fachzeitschrift | Physics Procedia |
Jahrgang | 61 |
DOIs | |
Publikationsstatus | Veröffentlicht - 2015 |
Extern publiziert | Ja |
Veranstaltung | 13th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2013 - , USA/Vereinigte Staaten Dauer: 8 Sept. 2013 → 13 Sept. 2013 |