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29 March 2024
 
  » arxiv » 2010.04033

 Article overview


Pulse Shape Discrimination in CUPID-Mo using Principal Component Analysis
R. Huang ; E. Armengaud ; C. Augier ; A. S. Barabash ; F. Bellini ; G. Benato ; A. Benoît ; M. Beretta ; L. Bergé ; J. Billard ; Yu. A. Borovlev ; Ch. Bourgeois ; V. B. Brudanin ; P. Camus ; L. Cardani ; N. Casali ; A. Cazes ; M. Chapellier ; F. Charlieux ; M. de Combarieu ; I. Dafinei ; F. A. Danevich ; M. De Jesus ; T. Dixon ; L. Dumoulin ; K. Eitel ; F. Ferri ; B. K. Fujikawa ; J. Gascon ; L. Gironi ; A. Giuliani ; V. D. Grigorieva ; M. Gros ; E. Guerard ; D. L. Helis ; H. Z. Huang ; J. Johnston ; A. Juillard ; H. Khalife ; M. Kleifges ; V. V. Kobychev ; Yu. G. Kolomensky ; S.I. Konovalov ; P. Loaiza ; L. Ma ; E. P. Makarov ; P. de Marcillac ; R. Mariam ; L. Marini ; S. Marnieros ; D. Misiak ; X.-F. Navick ; C. Nones ; E. Olivieri ; J. L. Ouellet ; L. Pagnanini ; P. Pari ; L. Pattavina ; B. Paul ; M. Pavan ; H. Peng ; G. Pessina ; S. Pirro ; D. V. Poda ; O. G. Polischuk ; E. Previtali ; Th. Redon ; S. Rozov ; C. Rusconi ; V. Sanglard ; K. Schäffner ; B. Schmidt ; Y. Shen ; V. N. Shlegel ; B. Siebenborn ; V. Singh ; C. Tomei ; V. I. Tretyak ; V. I. Umatov ; L. Vagneron ; M. Velázquez ; M. Weber ; B. Welliver ; L. Winslow ; M. Xue ; E. Yakushev ; M. M. Zarytskyy ; A. S. Zolotarova ;
Date 8 Oct 2020
AbstractCUPID-Mo is a cryogenic detector array designed to search for neutrinoless double-beta decay ($0 uetaeta$) of $^{100}$Mo. It uses 20 scintillating $^{100}$Mo-enriched Li$_2$MoO$_4$ bolometers instrumented with Ge light detectors to perform active suppression of $alpha$ backgrounds, drastically reducing the expected background in the $0 uetaeta$ 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.
Source arXiv, 2010.04033
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