Review of double beta experiments

TL;DR

This review comprehensively covers various experimental techniques for double beta decay detection, discussing backgrounds, advantages, limitations, and recent progress, especially highlighting scintillating bolometers and large liquid scintillator detectors.

Contribution

It provides a detailed comparison of double beta decay experimental methods, including recent advancements and specific focus on scintillating bolometers and liquid scintillator detectors.

Findings

Analysis of background sources and reduction strategies.

Comparison of different detection techniques.

Highlighting progress in scintillating bolometers.

Abstract

This paper is the first part of the manuscript written in April 2012 for my academic Accreditation to supervise research. It offers a review of the double beta experimental techniques. My purpose is to detail, for each technique, the different origins of background, how they can be identified, and how they can be reduced. Advantages and limitations are discussed. This review is organized as follows. First, the question of the possible Majorana nature for the neutrino is presented and the physic of neutrinoless double beta decay is summarized. Then I begin by presenting the tracko-calo NEMO-3 and SuperNEMO experiments. I've worked on these two experiments since 15 years. So it was natural to start with them with a relatively more exhaustive description. I will then present the germanium technique. I will then review the bolometer technique. I will describe in detail the recent progress in scintillating bolometers because I think that it is one of the most promising techniques. Finally I will review the large liquid scintillator detectors and Xenon TPC. The last chapter offers a summary of the different techniques and projects.