Phys. Rev. C 94, 054608 (2016) - Cerenkov light identification with Si low-temperature detectors with sensitivity enhanced by the Neganov-Luke effect

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

L. Gironi, M. Biassoni, C. Brofferio, S. Capelli, P. Carniti, L. Cassina, M. Clemenza, O. Cremonesi, M. Faverzani, E. Ferri, E. Fossati, A. Giachero, C. Giordano, C. Gotti, M. Maino, B. Margesin, F. Moretti, A. Nucciotti, M. Pavan, G. Pessina, S. Pozzi, E. Previtali, A. Puiu, M. Sisti, and F. Terranova

Phys. Rev. C 94, 054608 – Published 7 November 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 ${TeO}_{2}$ crystals. With this mechanism a high significance event-by-event discrimination between $α$ and $β / γ$ interactions at the ${}^{130}{Te}$ neutrino-less double- $β$ decay $Q$ value of $2527.515 \pm 0.013$ keV has been demonstrated. This measurement opens the possibility of drastically reducing the background in cryogenic experiments based on ${TeO}_{2}$ .

Received 25 March 2016

DOI:https://doi.org/10.1103/PhysRevC.94.054608

©2016 American Physical Society

Physics Subject Headings (PhySH)

Neutrinoless double beta decay

Radiation detectors Solid-state detectors

Nuclear Physics

Authors & Affiliations

L. Gironi^1,2, M. Biassoni^1,2,*, C. Brofferio^1,2, S. Capelli^1,2, P. Carniti^1,2, L. Cassina^1,2, M. Clemenza^1,2, O. Cremonesi², M. Faverzani^1,2, E. Ferri², E. Fossati^1,2, A. Giachero², C. Giordano³, C. Gotti^1,2, M. Maino^1,2, B. Margesin³, F. Moretti^1,2, A. Nucciotti^1,2, M. Pavan^1,2, G. Pessina², S. Pozzi^1,2, E. Previtali², A. Puiu^1,2, M. Sisti^1,2, and F. Terranova^1,2

¹Dipartimento di Fisica - Università di Milano-Bicocca, Milano, Italy
²INFN - Sezione di Milano-Bicocca, Milano, Italy
³Fondazione Bruno Kessler, Trento, Italy

^*matteo.biassoni@mib.infn.it

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Issue

Vol. 94, Iss. 5 — November 2016

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