First scintillating bolometer tests of a CLYMENE R&D on Li2MoO4 scintillators towards a large-scale double-beta decay experiment
| Autor: | Th. Redon, V. Novati, C. Nones, A. S. Zolotarova, E. Olivieri, D. V. Poda, Gabriel Buse, S. Marnieros, Philippe Veber, Matias Velázquez, P. de Marcillac, Jean-Baptiste Sand, A. Giuliani |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Nuclear and High Energy Physics Lithium molybdate 010308 nuclear & particles physics Bolometer chemistry.chemical_element Crystal growth Alpha particle Scintillator 01 natural sciences 7. Clean energy law.invention Nuclear physics Crystal chemistry.chemical_compound chemistry law Double beta decay 0103 physical sciences Lithium 010306 general physics Instrumentation |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 891:87-91 |
| ISSN: | 0168-9002 |
| Popis: | 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 (10 σ ) and potentially low internal radioactive contamination (below 0.2–0.3 mBq/kg of U/Th, but 1.4 mBq/kg of 210Po) demonstrate prospects of the CLYMENE in the development of high quality and radiopure Li 2 MoO 4 scintillators for CUPID. |
| Databáze: | OpenAIRE |
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