Low Background Signal Readout Electronics for the MAJORANA DEMONSTRATOR

TL;DR

This paper discusses the design of low-background, low-noise readout electronics for the MAJORANA DEMONSTRATOR, aiming to minimize background signals near the detectors to enable sensitive neutrinoless double beta decay searches.

Contribution

It presents the specific electronic design solutions developed to reduce background signals in the MAJORANA experiment.

Findings

Electronics achieve low noise levels suitable for rare event detection

Design effectively minimizes background signals near detectors

Supports the goal of less than 1 count/tonne-year in the region of interest

Abstract

The MAJORANA DEMONSTRATOR is a planned 40 kg array of Germanium detectors intended to demonstrate the feasibility of constructing a tonne-scale experiment that will seek neutrinoless double beta decay ($0\nu\beta\beta$) in $^{76}\mathrm{Ge}$. Such an experiment would require backgrounds of less than 1 count/tonne-year in the 4 keV region of interest around the 2039 keV Q-value of the $\beta\beta$ decay. Designing low-noise electronics, which must be placed in close proximity to the detectors, presents a challenge to reaching this background target. This paper will discuss the MAJORANA collaboration's solutions to some of these challenges.