MAJORANA Collaboration's Experience with Germanium Detectors

Abstract

The goal of the \textsc{Majorana} \textsc{Demonstrator} project is to search for 0$\nu \beta \beta$ decay in ${}^{76}\mathrm{Ge}$. Of all candidate isotopes for 0$\nu \beta \beta$, ${}^{76}\mathrm{Ge}$ has some of the most favorable characteristics. Germanium detectors are a well established technology, and in searches for 0$\nu \beta \beta$, the high purity germanium crystal acts simultaneously as source and detector. Furthermore, p-type germanium detectors provide excellent energy resolution and a specially designed point contact geometry allows for sensitive pulse shape discrimination. This paper will summarize the experiences the \textsc{Majorana} collaboration made with enriched germanium detectors manufactured by ORTEC${}^{\circledR }$. The process from production, to characterization and integration in \textsc{Majorana} mounting structure will be described. A summary of the performance of all enriched germanium detectors will be given.

arXiv comment10 pages, 8 figures

References in corpus (2)

• Double Beta Decay, Majorana Neutrinos, and Neutrino Mass
• Theory for the Direct Detection of Solar Axions by Coherent Primakoff Conversion in Germanium Detectors

Cited by in corpus (5)

• The Majorana Demonstrator calibration system
• Probing flavor models with Ge-76-based experiments on neutrinoless double-beta decay
• $\alpha$-event Characterization and Rejection in Point-Contact HPGe Detectors
• Characterisation of an n-type segmented BEGe detector
• Machine learning-powered data cleaning for LEGEND: a semi-supervised approach using affinity propagation and support vector machines