TY - JOUR
T1 - First scintillating bolometer tests of a CLYMENE R&D on Li
2
MoO
4
scintillators towards a large-scale double-beta decay experiment
AU - Buşe, G.
AU - Giuliani, A.
AU - de Marcillac, P.
AU - Marnieros, S.
AU - Nones, C.
AU - Novati, V.
AU - Olivieri, E.
AU - Poda, D. V.
AU - Redon, T.
AU - Sand, J. B.
AU - Veber, P.
AU - Velázquez, M.
AU - Zolotarova, A. S.
PY - 2018/5/21
Y1 - 2018/5/21
N2 -
A new R&D on lithium molybdate scintillators has begun within a project CLYMENE (Czochralski growth of Li
2
MoO
4
crYstals for the scintillating boloMeters used in the rare EveNts sEarches). One of the main goals of the CLYMENE is a realization of a Li
2
MoO
4
crystal growth line to be complementary to the one recently developed by LUMINEU in view of a mass production capacity for CUPID, a next-generation tonne-scale bolometric experiment to search for neutrinoless double-beta decay. In the present paper we report the investigation of performance and radiopurity of 158-g and 13.5-g scintillating bolometers based on a first large-mass (230 g) Li
2
MoO
4
crystal scintillator developed within the CLYMENE project. In particular, a good energy resolution (2–7 keV FWHM in the energy range of 0.2–5 MeV), one of the highest light yield (0.97 keV/MeV) amongst Li
2
MoO
4
scintillating bolometers, an efficient alpha particles discrimination (10σ) and potentially low internal radioactive contamination (below 0.2–0.3 mBq/kg of U/Th, but 1.4 mBq/kg of
210
Po) demonstrate prospects of the CLYMENE in the development of high quality and radiopure Li
2
MoO
4
scintillators for CUPID.
AB -
A new R&D on lithium molybdate scintillators has begun within a project CLYMENE (Czochralski growth of Li
2
MoO
4
crYstals for the scintillating boloMeters used in the rare EveNts sEarches). One of the main goals of the CLYMENE is a realization of a Li
2
MoO
4
crystal growth line to be complementary to the one recently developed by LUMINEU in view of a mass production capacity for CUPID, a next-generation tonne-scale bolometric experiment to search for neutrinoless double-beta decay. In the present paper we report the investigation of performance and radiopurity of 158-g and 13.5-g scintillating bolometers based on a first large-mass (230 g) Li
2
MoO
4
crystal scintillator developed within the CLYMENE project. In particular, a good energy resolution (2–7 keV FWHM in the energy range of 0.2–5 MeV), one of the highest light yield (0.97 keV/MeV) amongst Li
2
MoO
4
scintillating bolometers, an efficient alpha particles discrimination (10σ) and potentially low internal radioactive contamination (below 0.2–0.3 mBq/kg of U/Th, but 1.4 mBq/kg of
210
Po) demonstrate prospects of the CLYMENE in the development of high quality and radiopure Li
2
MoO
4
scintillators for CUPID.
KW - Bolometer
KW - Cryogenic detector
KW - Crystal scintillator
KW - Double-beta decay
KW - Lithium molybdate
KW - Radiopurity
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U2 - 10.1016/j.nima.2018.02.101
DO - 10.1016/j.nima.2018.02.101
M3 - Article
AN - SCOPUS:85042940645
VL - 891
SP - 87
EP - 91
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
ER -