Development of an anti-Compton veto for HPGe detectors operated in liquid argon using Silicon Photo-Multipliers

Abstract

A proof of concept detector is presented for scintillation light detection in liquid argon using Silicon Photo-Multipliers. The aim of the work is to build an anti-Compton veto for germanium detectors operated directly in liquid argon like in the GERDA experiment. Properties of the Multi-Pixel Photon Counter (MPPC) are studied at cryogenic temperatures. To increase the light collection efficiency of the MPPCs wavelength shifting fibers were used. A veto efficiency comparable to a similar setup with a Photo-Multiplier Tube was achieved.

18 pages, 13 figures

References in corpus (5)

• Characterisation Studies of Silicon Photomultipliers
• A New 76Ge Double Beta Decay Experiment at LNGS
• A multipixel silicon APD with ultralow dark count rate at liquid nitrogen temperature
• On the basic mechanism of Pixelized Photon Detectors
• LArGe: Background suppression using liquid argon (LAr) scintillation for 0$\nu \beta \beta$ decay search with enriched germanium (Ge) detectors

Cited by in corpus (13)

• Final Results of GERDA on the Search for Neutrinoless Double-$\beta$ Decay
• The design of the MEG II experiment
• Probing Majorana neutrinos with double-$\beta$ decay
• MEG Upgrade Proposal
• Silicon Photomultipliers in Particle and Nuclear Physics
• Virtual depth by active background suppression: Revisiting the cosmic muon induced background of GERDA Phase II
• MPPC versus MRS APD in two-phase Cryogenic Avalanche Detectors
• First operation of undoped CsI directly coupled with SiPMs at 77 Kelvin
• Liquid argon light collection and veto modeling in GERDA Phase II
• Production and validation of scintillating structural components from low-background Poly(ethylene naphthalate)
• Optical fiber read-out for liquid argon scintillation light
• The search for 0nbb decay with the GERDA experiment: status and prospects
• Characterization of Silicon Photomultiplier Photon Detection Efficiency at Liquid Nitrogen Temperature