Application of PbWO4 crystal scintillators in experiment to search for double beta decay of 116Cd

Abstract

PbWO4 crystal scintillators are discussed as an active shield and light-guides in 116Cd double beta decay experiment with CdWO4 scintillators. Scintillation properties and radioactive contamination of PbWO4 scintillators were investigated. Energy resolution of CdWO4 detector, coupled to PbWO4 crystal as a light-guide, was tested. Efficiency of PbWO4-based active shield to suppress background from the internal contamination of PbWO4 crystals was calculated. Using of lead tungstate crystal scintillators as high efficiency 4-pi active shield could allow to build sensitive double beta experiment with 116CdWO4 crystal scintillators.

12 pages, 5 figs

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• Further study of CdWO4 crystal scintillators as detectors for high sensitivity double beta experiments: scintillation properties and pulse-shape discrimination
• Intrinsic radiation background of LaBr${}_3$(Ce) detector via coincidence measurements and simulations
• Pulse-shape discrimination with PbWO${}_4$ crystal scintillators
• Radioactive contamination of scintillators
• Radiopure tungstate and molybdate crystal scintillators for double beta decay experiments
• Cryogenic phonon-scintillation detectors with PMT readout for rare event search experiments