Armatol, A; Armengaud, E; Armstrong, W; Augier, C; Avignone, FT; Azzolini, O; Bandac, IC; Barabash, AS; Bari, G; Barresi, A; Baudin, D; Bellini, F; Benato, G; Beretta, M; Bergé, L; Bourgeois, Ch; Biassoni, M; Billard, J; Boldrini, V; Branca, A; Brofferio, C; Bucci, C; Calvo-Mozota, JM; Camilleri, J; Candela, A; Capelli, S; Cappelli, L; Cardani, L; Carniti, P; Casali, N; Cazes, A; Celi, E; Chang, C; Chapellier, M; Charrier, A; Chiesa, D; Clemenza, M; Colantoni, I; Collamati, F; Copello, S; Cremonesi, O; Creswick, RJ; Cruciani, A; D'Addabbo, A; D'Imperio, G; Dafinei, I; Danevich, FA; de Combarieu, M; De Deo, M; De Jesus, M; de Marcillac, P; Dell'Oro, S; Di Domizio, S; Dompe, V; Drobizhev, A; Dumoulin, L; Fantini, G; Faverzani, M; Ferri, E; Ferri, F; Ferroni, F; Figueroa-Feliciano, E; Formaggio, J; Franceschi, A; Fu, C; Fu, S; Fujikawa, BK; Gascon, J; Giachero, A; Gironi, L; Giuliani, A; Gorla, P; Gotti, C; Gras, P; Gros, M; Guerard, E; Gutierrez, TD; Han, K; Hansen, EV; Heeger, KM; Helis, DL; Huang, HZ; Huang, RG; Ianni, A; Imbert, L; Armatol, A; Armengaud, E; Armstrong, W; Augier, C; Avignone, FT; Azzolini, O; Bandac, IC; Barabash, AS; Bari, G; Barresi, A; Baudin, D; Bellini, F; Benato, G; Beretta, M; Bergé, L; Bourgeois, Ch; Biassoni, M; Billard, J; Boldrini, V; Branca, A; Brofferio, C; Bucci, C; Calvo-Mozota, JM; Camilleri, J; Candela, A; Capelli, S; Cappelli, L; Cardani, L; Carniti, P; Casali, N; Cazes, A; Celi, E; Chang, C; Chapellier, M; Charrier, A; Chiesa, D; Clemenza, M; Colantoni, I; Collamati, F; Copello, S; Cremonesi, O; Creswick, RJ; Cruciani, A; D'Addabbo, A; D'Imperio, G; Dafinei, I; Danevich, FA; de Combarieu, M; De Deo, M; De Jesus, M; de Marcillac, P; Dell'Oro, S; Di Domizio, S; Dompe, V; Drobizhev, A; Dumoulin, L; Fantini, G; Faverzani, M; Ferri, E; Ferri, F; Ferroni, F; Figueroa-Feliciano, E; Formaggio, J; Franceschi, A; Fu, C; Fu, S; Fujikawa, BK; Gascon, J; Giachero, A; Gironi, L; Giuliani, A; Gorla, P; Gotti, C; Gras, P; Gros, M; Guerard, E; Gutierrez, TD; Han, K; Hansen, EV; Heeger, KM; Helis, DL; Huang, HZ; Huang, RG; Ianni, A; Imbert, L

doi:10.1088/1748-0221/16/02/p02037

Download PDF

A CUPID Li2100MoO4 scintillating bolometer tested in the CROSS underground facility

2021

Published Web Location

https://doi.org/10.1088/1748-0221/16/02/p02037

Abstract

A scintillating bolometer based on a large cubic Li$_{2} $^{100} $ M o O $_{4} $ c r y s t a l (45 m m s i d e) a n d a G e w a f e r (s c i n t i l l a t i o n d e t e c t o r) h a s b e e n o p e r a t e d i n t h e C R O S S c r y o g e n i c f a c i l i t y a t t h e C a n f r a n c u n d e r g r o u n d l a b o r a t o r y i n S p a i n . T h e d u a l - r e a d o u t d e t e c t o r i s a p r o t o t y p e o f t h e t e c h n o l o g y t h a t w i l l b e u s e d i n t h e n e x t - g e n e r a t i o n $ 0 u 2 β $ e x p e r i m e n t C U P I D . T h e m e a s u r e m e n t s w e r e p e r f o r m e d a t 18 a n d 12 m K t e m p e r a t u r e i n a p u l s e t u b e d i l u t i o n r e f r i g e r a t o r . T h i s s e t u p u t i l i z e s t h e s a m e t e c h n o l o g y a s t h e C U O R E c r y o s t a t t h a t w i l l h o s t C U P I D a n d s o r e p r e s e n t s a n a c c u r a t e e s t i m a t i o n o f t h e e x p e c t e d p e r f o r m a n c e . T h e L i $_{2}$ ^{100}$MoO$_4$ bolometer shows a high energy resolution of 6 keV FWHM at the 2615 keV $\gamma$ line. The detection of scintillation light for each event triggered by the Li$_{2} $^{100} $ M o O $_{4} $ b o l o m e t e r a l l o w e d f o r a f u l l s e p a r a t i o n ($ \sim $ 8 $ σ $) b e t w e e n $ γ $ ($ β $) a n d $ α $ e v e n t s a b o v e 2 M e V . T h e L i $_{2}$ ^{100}$MoO$_4$ crystal also shows a high internal radiopurity with $^{228}$Th and $^{226}$Ra activities of less than 3 and 8 $\mu$Bq/kg, respectively. Taking also into account the advantage of a more compact and massive detector array, which can be made of cubic-shaped crystals (compared to the cylindrical ones), this test demonstrates the great potential of cubic Li$_{2}$$^{100}$MoO$_4$ scintillating bolometers for high-sensitivity searches for the $^{100}$Mo $0 u2\beta$ decay in CROSS and CUPID projects.

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Main Content

For improved accessibility of PDF content, download the file to your device.

UC Berkeley

A CUPID Li2100MoO4 scintillating bolometer tested in the CROSS underground facility

Published Web Location