Characterization of bolometric Light Detectors for rare event searches

TL;DR

This paper evaluates the performance of a Germanium bolometric light detector for rare event searches, focusing on its signal quality and operational optimization to enhance background rejection in scintillating bolometers.

Contribution

It provides a detailed characterization of a Germanium bolometric light detector, highlighting how operational parameters influence its performance for rare event detection.

Findings

Optimal operational conditions improve signal amplitude and resolution.

Operational parameters significantly affect detector performance.

Enhanced background rejection capabilities are achievable with optimized detectors.

Abstract

Bolometers have proven to be very good detectors to search for rare processes thanks to their excellent energy resolution and their low intrinsic background. Further active background rejection can be obtained by the simultaneous readout of the heat and light signals produced by particles interacting in scintillating bolometers, as proposed by the LUCIFER experiment. In this framework, the choice of the light detector and the optimization of its working conditions play a crucial role. In this paper, we report a study of the performances of a Germanium bolometric light detector in terms of signal amplitude, energy resolution and signal time development. The impact of various operational parameters on the detector performances is discussed.