Background identification in cryogenic calorimeters through $\alpha-\alpha$ delayed coincidences
Instrumentation and Detectors
2021-08-16 v2 Nuclear Experiment
Data Analysis, Statistics and Probability
Abstract
Localization and modeling of radioactive contaminations is a challenge that ultra-low background experiments are constantly facing. These are fundamental steps both to extract scientific results and to further reduce the background of the detectors. Here we present an innovative technique based on the analysis of delayed coincidences in Th and U decay chains, developed to investigate the contaminations of the ZnSe crystals in the CUPID-0 experiment. This method allows to disentangle surface and bulk contaminations of the detectors relying on the different probability to tag delayed coincidences as function of the decay position.
Keywords
Cite
@article{arxiv.2105.04409,
title = {Background identification in cryogenic calorimeters through $\alpha-\alpha$ delayed coincidences},
author = {O. Azzolini and J. W. Beeman and F. Bellini and M. Beretta and M. Biassoni and C. Brofferio and C. Bucci and S. Capelli and L. Cardani and P. Carniti and N. Casali and D. Chiesa and M. Clemenza and O. Cremonesi and A. Cruciani and I. Dafinei and A. D'Addabbo and S. Di Domizio and F. Ferroni and L. Gironi and A. Giuliani and P. Gorla and C. Gotti and G. Keppel and M. Martinez and S. Nagorny and M. Nastasi and S. Nisi and C. Nones and D. Orlandi and L. Pagnanini and M. Pallavicini and L. Pattavina and M. Pavan and G. Pessina and V. Pettinacci and S. Pirro and S. Pozzi and E. Previtali and A. Puiu and C. Rusconi and K. Schäffner and C. Tomei and M. Vignati and A. Zolotarova},
journal= {arXiv preprint arXiv:2105.04409},
year = {2021}
}