A new generation of cryogenic light detectors exploiting the Neganov-Luke effect to enhance the thermal signal has been used to detect the Cherenkov light emitted by electrons interacting in TeO2 crystals. With this mechanism a high significance event-by-event discrimination between α and β/γ interactions at the Te130 neutrino-less double-β decay Q value of 2527.515±0.013 keV has been demonstrated. This measurement opens the possibility of drastically reducing the background in cryogenic experiments based on TeO2.

Cerenkov light identification with Si low-temperature detectors with sensitivity enhanced by the Neganov-Luke effect

PUIU, PAUL ANDREI;
2016

Abstract

A new generation of cryogenic light detectors exploiting the Neganov-Luke effect to enhance the thermal signal has been used to detect the Cherenkov light emitted by electrons interacting in TeO2 crystals. With this mechanism a high significance event-by-event discrimination between α and β/γ interactions at the Te130 neutrino-less double-β decay Q value of 2527.515±0.013 keV has been demonstrated. This measurement opens the possibility of drastically reducing the background in cryogenic experiments based on TeO2.
Neganov-Luke effect
Double Beta Decay
Neutrino
low temperature detector
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.12571/8000
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