- Main
Development of 100Mo -containing scintillating bolometers for a high-sensitivity neutrinoless double-beta decay search.
- Author(s): Armengaud, E
- Augier, C
- Barabash, AS
- Beeman, JW
- Bekker, TB
- Bellini, F
- Benoît, A
- Bergé, L
- Bergmann, T
- Billard, J
- Boiko, RS
- Broniatowski, A
- Brudanin, V
- Camus, P
- Capelli, S
- Cardani, L
- Casali, N
- Cazes, A
- Chapellier, M
- Charlieux, F
- Chernyak, DM
- de Combarieu, M
- Coron, N
- Danevich, FA
- Dafinei, I
- Jesus, M De
- Devoyon, L
- Domizio, S Di
- Dumoulin, L
- Eitel, K
- Enss, C
- Ferroni, F
- Fleischmann, A
- Foerster, N
- Gascon, J
- Gastaldo, L
- Gironi, L
- Giuliani, A
- Grigorieva, VD
- Gros, M
- Hehn, L
- Hervé, S
- Humbert, V
- Ivannikova, NV
- Ivanov, IM
- Jin, Y
- Juillard, A
- Kleifges, M
- Kobychev, VV
- Konovalov, SI
- Koskas, F
- Kozlov, V
- Kraus, H
- Kudryavtsev, VA
- Laubenstein, M
- Sueur, H Le
- Loidl, M
- Magnier, P
- Makarov, EP
- Mancuso, M
- de Marcillac, P
- Marnieros, S
- Marrache-Kikuchi, C
- Nagorny, S
- Navick, X-F
- Nikolaichuk, MO
- Nones, C
- Novati, V
- Olivieri, E
- Pagnanini, L
- Pari, P
- Pattavina, L
- Pavan, M
- Paul, B
- Penichot, Y
- Pessina, G
- Piperno, G
- Pirro, S
- Plantevin, O
- Poda, DV
- Queguiner, E
- Redon, T
- Rodrigues, M
- Rozov, S
- Rusconi, C
- Sanglard, V
- Schäffner, K
- Scorza, S
- Shlegel, VN
- Siebenborn, B
- Strazzer, O
- Tcherniakhovski, D
- Tomei, C
- Tretyak, VI
- Umatov, VI
- Vagneron, L
- Vasiliev, Ya V
- Velázquez, M
- Vignati, M
- Weber, M
- Yakushev, E
- Zolotarova, AS
- et al.
Published Web Location
https://doi.org/10.1140/epjc/s10052-017-5343-2Abstract
This paper reports on the development of a technology involving 100Mo -enriched scintillating bolometers, compatible with the goals of CUPID, a proposed next-generation bolometric experiment to search for neutrinoless double-beta decay. Large mass ( ∼1kg ), high optical quality, radiopure 100Mo -containing zinc and lithium molybdate crystals have been produced and used to develop high performance single detector modules based on 0.2-0.4 kg scintillating bolometers. In particular, the energy resolution of the lithium molybdate detectors near the Q-value of the double-beta transition of 100Mo (3034 keV) is 4-6 keV FWHM. The rejection of the α -induced dominant background above 2.6 MeV is better than 8σ . Less than 10μBq/kg activity of 232Th(228Th) and 226Ra in the crystals is ensured by boule recrystallization. The potential of 100Mo -enriched scintillating bolometers to perform high sensitivity double-beta decay searches has been demonstrated with only 10kg×d exposure: the two neutrino double-beta decay half-life of 100Mo has been measured with the up-to-date highest accuracy as T1/2 = [6.90 ± 0.15(stat.) ± 0.37(syst.)] ×1018years . Both crystallization and detector technologies favor lithium molybdate, which has been selected for the ongoing construction of the CUPID-0/Mo demonstrator, containing several kg of 100Mo .