Characterization of High Purity Germanium Point Contact Detectors with Low Net Impurity Concentration

Abstract

High Purity germanium point-contact detectors have low energy thresholds and excellent energy resolution over a wide energy range, and are thus widely used in nuclear and particle physics. In rare event searches, such as neutrinoless double beta decay, the point-contact geometry is of particular importance since it allows for pulse-shape discrimination, and therefore for a significant background reduction. In this paper we investigate the pulse-shape discrimination performance of ultra-high purity germanium point contact detectors. It is demonstrated that a minimal net impurity concentration is required to meet the pulse-shape performance requirements.

References in corpus (4)

• Observation of Coherent Elastic Neutrino-Nucleus Scattering
• Improved limit on neutrinoless double beta decay of ${}^{76}$Ge from GERDA Phase II
• The GERDA experiment for the search of 0νββ decay in ^{76}Ge
• \textsc{MaGe} - a {\sc Geant4}-based Monte Carlo Application Framework for Low-background Germanium Experiments

Cited by in corpus (9)

• Characterization of 30 ${}^{76}$Ge enriched Broad Energy Ge detectors for GERDA Phase II
• $\alpha$-event Characterization and Rejection in Point-Contact HPGe Detectors
• ADC Nonlinearity Correction for the MAJORANA DEMONSTRATOR
• Identification of the anomalous fast bulk events in a p-type point contact germanium detector
• Characterization of High-Purity Germanium Detectors with Amorphous Germanium Contacts in Cryogenic Liquids
• Charge-carrier collective motion in germanium detectors for ββ-decay searches
• Investigation of ASIC-based signal readout electronics for LEGEND-1000
• Surface characterization of p-type point contact germanium detectors
• CycleGAN-Driven Transfer Learning for Electronics Response Emulation in High-Purity Germanium Detectors