The Majorana Project
S.R. Elliott (for the MAJORANA Collaboration)

TL;DR
The paper discusses the design and planned construction of the Majorana Demonstrator, a low-background, high-purity germanium detector array aimed at detecting neutrinoless double-beta decay to probe neutrino mass in the inverted hierarchy.
Contribution
It introduces a scalable detector design using enriched germanium crystals and ultra-low background materials, demonstrating feasibility with a prototype system for future large-scale experiments.
Findings
Prototype system to evaluate detector technologies
Achievement of ultra-low background levels
Feasibility of scaling to 1-tonne detector mass
Abstract
Building a \BBz experiment with the ability to probe neutrino mass in the inverted hierarchy region requires the combination of a large detector mass sensitive to \BBz, on the order of 1-tonne, and unprecedented background levels, on the order of or less than 1 count per year in the \BBz signal region. The MAJORANA Collaboration proposes a design based on using high-purity enriched Ge-76 crystals deployed in ultra-low background electroformed Cu cryostats and using modern analysis techniques that should be capable of reaching the required sensitivity while also being scalable to a 1-tonne size. To demonstrate feasibility, the collaboration plans to construct a prototype system, the MAJORANA DEMONSTRATOR, consisting of 30 kg of 86% enriched \Ge-76 detectors and 30 kg of natural or isotope-76-depleted Ge detectors. We plan to deploy and evaluate two different Ge detector technologies, one…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsInternational Science and Diplomacy
