The MAJORANA 76Ge neutrino less double-beta decay project: A brief update

TL;DR

The MAJORANA project aims to develop a one-ton germanium detector experiment to search for neutrinoless double-beta decay, assessing feasibility, background levels, and detector performance to reach a sensitivity of about 10^26 years.

Contribution

This paper provides an update on the design, detector configurations, and research progress toward constructing a large-scale experiment for neutrinoless double-beta decay detection.

Findings

Feasibility of constructing a 1-ton germanium detector array.

Performance metrics of various detector configurations.

Projected sensitivity reaching approximately 10^26 years.

Abstract

At present, MAJORANA is a research and development (R&D) project to investigate the feasibility and cost of constructing and operating a one ton decay experiment with ~1000 kg of Ge detectors fabricated from germanium enriched to 86% in . The study will include three separate cryostats with various types of detectors: un-segmented, un-segmented point-contact, minimally segmented, and highly segmented. One cryostat will contain at least 30 kg of enriched (preferably point-contact) detectors. The performance of the cryostats and detectors as well as background levels will be investigated. The goal of the demonstrator project is to reach a discovery sensitivity of ~ 1026 y.