Ultra-Low Noise Mechanically Cooled Germanium Detector

Abstract

Low capacitance, large volume, high purity germanium (HPGe) radiation detectors have been successfully employed in low-background physics experiments. However, some physical processes may not be detectable with existing detectors whose energy thresholds are limited by electronic noise. In this paper, methods are presented which can lower the electronic noise of these detectors. Through ultra-low vibration mechanical cooling and wire bonding of a CMOS charge sensitive preamplifier to a sub-pF p-type point contact HPGe detector, we demonstrate electronic noise levels below 40 eV-FWHM.

8 pages, 10 figures, submitted to Nuclear Instruments and Methods in Physics Research Section A

References in corpus (6)

• CoGeNT: A Search for Low-Mass Dark Matter using p-type Point Contact Germanium Detectors
• Large-Mass Ultra-Low Noise Germanium Detectors: Performance and Applications in Neutrino and Astroparticle Physics
• Experimental Results from an Antineutrino Detector for Cooperative Monitoring of Nuclear Reactors
• A Quantum Space Behind Simple Quantum Mechanics
• Electron transport properties in high-purity Ge down to cryogenic temperatures
• Low-background temperature sensors fabricated on parylene substrates

Cited by in corpus (5)

• Fabrication and Characterization of High-Purity Germanium Detectors with Amorphous Germanium Contacts
• Large-size sub-keV sensitive germanium detectors for the CONUS experiment
• The Impact of the Charge Barrier Height on Germanium (Ge) Detectors with Amorphous-Ge Contacts for Light Dark Matter Searches
• Investigation of ASIC-based signal readout electronics for LEGEND-1000
• Development of Planar P-type Point Contact Germanium Detectors for Low-Mass Dark Matter Searches