CUPID-Mo is a cryogenic detector array designed to search for neutrinoless double-beta decay (0νββ) of 100Mo. It uses 20 scintillating 100Mo-enriched Li2MoO4 bolometers instrumented with Ge light detectors to perform active suppression of α backgrounds, drastically reducing the expected background in the 0νββ 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.

Huang, R., Armengaud, E., Augier, C., Barabash, A., Bellini, F., Benato, G., et al. (2021). Pulse shape discrimination in CUPID-Mo using principal component analysis. JOURNAL OF INSTRUMENTATION, 16(3) [10.1088/1748-0221/16/03/P03032].

Pulse shape discrimination in CUPID-Mo using principal component analysis

Gironi L.;Pattavina L.;Pavan M.;Pessina G.;Previtali E.;
2021

Abstract

CUPID-Mo is a cryogenic detector array designed to search for neutrinoless double-beta decay (0νββ) of 100Mo. It uses 20 scintillating 100Mo-enriched Li2MoO4 bolometers instrumented with Ge light detectors to perform active suppression of α backgrounds, drastically reducing the expected background in the 0νββ 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.
Articolo in rivista - Articolo scientifico
Analysis and statistical methods; Calorimeters; Data processing methods; Double-beta decay detectors;
English
2021
16
3
P03032
none
Huang, R., Armengaud, E., Augier, C., Barabash, A., Bellini, F., Benato, G., et al. (2021). Pulse shape discrimination in CUPID-Mo using principal component analysis. JOURNAL OF INSTRUMENTATION, 16(3) [10.1088/1748-0221/16/03/P03032].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/458559
Citazioni
  • Scopus 14
  • ???jsp.display-item.citation.isi??? 13
Social impact