Pulse Shape Discrimination in CUPID-Mo using Principal Component Analysis
Abstract
CUPID-Mo is a cryogenic detector array designed to search for neutrinoless double-beta decay () of Mo. It uses 20 scintillating Mo-enriched LiMoO bolometers instrumented with Ge light detectors to perform active suppression of backgrounds, drastically reducing the expected background in the signal region. As a result, pileup events and small detector instabilities that mimic normal signals become non-negligible potential backgrounds. These types of events can in principle be eliminated based on their signal shapes, which are different from those of regular bolometric pulses. We show that a purely data-driven principal component analysis based approach is able to filter out these anomalous events, without the aid of detector response simulations.
Keywords
Cite
@article{arxiv.2010.04033,
title = {Pulse Shape Discrimination in CUPID-Mo using Principal Component Analysis},
author = {R. Huang and E. Armengaud and C. Augier and A. S. Barabash and F. Bellini and G. Benato and A. Benoît and M. Beretta and L. Bergé and J. Billard and Yu. A. Borovlev and Ch. Bourgeois and V. B. Brudanin and P. Camus and L. Cardani and N. Casali and A. Cazes and M. Chapellier and F. Charlieux and M. de Combarieu and I. Dafinei and F. A. Danevich and M. De Jesus and T. Dixon and L. Dumoulin and K. Eitel and F. Ferri and B. K. Fujikawa and J. Gascon and L. Gironi and A. Giuliani and V. D. Grigorieva and M. Gros and E. Guerard and D. L. Helis and H. Z. Huang and J. Johnston and A. Juillard and H. Khalife and M. Kleifges and V. V. Kobychev and Yu. G. Kolomensky and S. I. Konovalov and P. Loaiza and L. Ma and E. P. Makarov and P. de Marcillac and R. Mariam and L. Marini and S. Marnieros and D. Misiak and X. -F. Navick and C. Nones and E. Olivieri and J. L. Ouellet and L. Pagnanini and P. Pari and L. Pattavina and B. Paul and M. Pavan and H. Peng and G. Pessina and S. Pirro and D. V. Poda and O. G. Polischuk and E. Previtali and Th. Redon and S. Rozov and C. Rusconi and V. Sanglard and J. A. Scarpaci and K. Schäffner and B. Schmidt and Y. Shen and V. N. Shlegel and B. Siebenborn and V. Singh and C. Tomei and V. I. Tretyak and V. I. Umatov and L. Vagneron and M. Velázquez and M. Weber and B. Welliver and L. Winslow and M. Xue and E. Yakushev and M. M. Zarytskyy and A. S. Zolotarova},
journal= {arXiv preprint arXiv:2010.04033},
year = {2021}
}