- Main
Pulse shape discrimination in CUPID-Mo using principal component analysis
- Author(s): Huang, R
- Armengaud, E
- Augier, C
- Barabash, AS
- Bellini, F
- Benato, G
- Beno t, A
- Beretta, M
- Bergé, L
- Billard, J
- Borovlev, YA
- Bourgeois, C
- Brudanin, VB
- Camus, P
- Cardani, L
- Casali, N
- Cazes, A
- Chapellier, M
- Charlieux, F
- De Combarieu, M
- Dafinei, I
- Danevich, FA
- De Jesus, M
- Dixon, T
- Dumoulin, L
- Eitel, K
- Ferri, F
- Fujikawa, BK
- Gascon, J
- Gironi, L
- Giuliani, A
- Grigorieva, VD
- Gros, M
- Guerard, E
- Helis, DL
- Huang, HZ
- Johnston, J
- Juillard, A
- Khalife, H
- Kleifges, M
- Kobychev, VV
- Kolomensky, YG
- Konovalov, SI
- Loaiza, P
- Ma, L
- Makarov, EP
- De Marcillac, P
- Mariam, R
- Marini, L
- Marnieros, S
- Misiak, D
- Navick, XF
- Nones, C
- Norman, EB
- Olivieri, E
- Ouellet, JL
- Pagnanini, L
- Pari, P
- Pattavina, L
- Paul, B
- Pavan, M
- Peng, H
- Pessina, G
- Pirro, S
- Poda, DV
- Polischuk, OG
- Previtali, E
- Redon, T
- Rozov, S
- Rusconi, C
- Sanglard, V
- Scarpaci, JA
- Sch ffner, K
- Schmidt, B
- Shen, Y
- Shlegel, VN
- Siebenborn, B
- Singh, V
- Tomei, C
- Tretyak, VI
- Umatov, VI
- Vagneron, L
- Velázquez, M
- Weber, M
- Welliver, B
- Winslow, L
- Xue, M
- Yakushev, E
- Zarytskyy, MM
- Zolotarova, AS
- et al.
Published Web Location
https://doi.org/10.1088/1748-0221/16/03/P03032Abstract
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.