Maqola

The CUPID-Mo experiment for neutrinoless double-beta decay: performance and prospects

E. ArmengaudIRFU, CEA, Université Paris-Saclay, 91191, Gif-sur-Yvette, FranceC. AugierUniv Lyon, Université Lyon 1, CNRS/IN2P3, IP2I-Lyon, 69622, Villeurbanne, FranceA. S. BarabashNational Research Centre Kurchatov Institute, Institute of Theoretical and Experimental Physics, 117218, Moscow, RussiaF. BelliniDipartimento di Fisica, Sapienza Università di Roma, P.le Aldo Moro 2, 00185, Rome, ItalyG. BenatoDepartment of Physics, University of California, Berkeley, CA, 94720, USAAlexandre BenoîtCNRS-Néel, 38042, Grenoble Cedex 9, FranceM. BerettaINFN, Sezione di Milano-Bicocca, 20126, Milan, ItalyL. BergéCSNSM, Univ. Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405, Orsay, FranceJ. BillardCentre National de la Recherche ScientifiqueYu. A. BorovlevNikolaev Institute of Inorganic Chemistry, 630090, Novosibirsk, RussiaC. BourgeoisUniversité Paris-SaclayM. BriéreInstitut National de Physique Nucléaire et de Physique des ParticulesV. BrudaninLaboratory of Nuclear Problems, JINR, 141980, Dubna, Moscow region, RussiaP. CamusCNRS-Néel, 38042, Grenoble Cedex 9, FranceL. CardaniINFN, Sezione di Roma, P.le Aldo Moro 2, 00185, Rome, ItalyN. CasaliINFN, Sezione di Roma, P.le Aldo Moro 2, 00185, Rome, ItalyA. CazesUniv Lyon, Université Lyon 1, CNRS/IN2P3, IP2I-Lyon, 69622, Villeurbanne, FranceM. ChapellierCentre National de la Recherche ScientifiqueF. CharlieuxCentre National de la Recherche ScientifiqueM. de CombarieuCEA Paris-SaclayI. DafineiINFN, Sezione di Roma, P.le Aldo Moro 2, 00185, Rome, ItalyF.A. DanevichInstitute for Nuclear Research, Kiev, 03028, UkraineM. De JésusUniv Lyon, Université Lyon 1, CNRS/IN2P3, IP2I-Lyon, 69622, Villeurbanne, FranceL. DumoulinCentre National de la Recherche ScientifiqueK. EitelKarlsruhe Institute of Technology, Institut für Kernphysik, 76021, Karlsruhe, GermanyE. ElkhouryUniv Lyon, Université Lyon 1, CNRS/IN2P3, IP2I-Lyon, 69622, Villeurbanne, FranceF. FerriUniversité Paris-SaclayB. K. FujikawaNuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USAJ. GasconUniv Lyon, Université Lyon 1, CNRS/IN2P3, IP2I-Lyon, 69622, Villeurbanne, FranceL. GironiINFN, Sezione di Milano-Bicocca, 20126, Milan, ItalyA. GiulianiInstitut National de Physique Nucléaire et de Physique des ParticulesV. D. GrigorievaNikolaev Institute of Inorganic Chemistry, 630090, Novosibirsk, RussiaM. GrosInstitut de Recherche sur les Lois Fondamentales de l'UniversC. GuérardLAL, Univ. Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91898, Orsay, FranceD. HelisIRFU, CEA, Université Paris-Saclay, 91191, Gif-sur-Yvette, FranceH. Z. HuangKey Laboratory of Nuclear Physics and Ion-beam Application (MOE), Fudan University, Shanghai, 200433, People’s Republic of ChinaR.G. HuangDepartment of Physics, University of California, Berkeley, CA, 94720, USAJ. JohnstonMassachusetts Institute of Technology, Cambridge, MA, 02139, USAA. JuillardCentre National de la Recherche ScientifiqueH. KhalifeInstitut National de Physique Nucléaire et de Physique des ParticulesM. KleifgesKarlsruhe Institute of Technology, Institut für Prozessdatenverarbeitung und Elektronik, 76021, Karlsruhe, GermanyV. KobychevInstitute for Nuclear Research, Kiev, 03028, UkraineYu.G. KolomenskyPhysics Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USAС. И. КоноваловNational Research Centre Kurchatov Institute, Institute of Theoretical and Experimental Physics, 117218, Moscow, RussiaA. LederMassachusetts Institute of Technology, Cambridge, MA, 02139, USAP. LoaizaCentre National de la Recherche ScientifiqueL. MaUniversité Paris-SaclayE. P. MakarovNikolaev Institute of Inorganic Chemistry, 630090, Novosibirsk, RussiaP. de MarcillacCentre National de la Recherche ScientifiqueL. MariniDepartment of Physics, University of California, Berkeley, CA, 94720, USAS. MarnierosCentre National de la Recherche ScientifiqueD. MisiakUniv Lyon, Université Lyon 1, CNRS/IN2P3, IP2I-Lyon, 69622, Villeurbanne, FranceX.-F. NavickInstitut de Recherche sur les Lois Fondamentales de l'UniversC. NonesInstitut de Recherche sur les Lois Fondamentales de l'UniversV. NovatiUniversité Paris-SaclayE. OlivieriCentre National de la Recherche ScientifiqueJ. L. OuelletMassachusetts Institute of Technology, Cambridge, MA, 02139, USAL. PagnaniniINFN, Sezione di Milano-Bicocca, 20126, Milan, ItalyP. PariUniversité Paris-SaclayL. PattavinaPhysik Department, Technische Universität München, 85748, Garching, GermanyB. PaulInstitut de Recherche sur les Lois Fondamentales de l'UniversM. PavanINFN, Sezione di Milano-Bicocca, 20126, Milan, ItalyH. PengDepartment of Modern Physics, University of Science and Technology of China, Hefei, 230027, People’s Republic of ChinaG. PessinaINFN, Sezione di Milano-Bicocca, 20126, Milan, ItalyS. PirroINFN, Laboratori Nazionali del Gran Sasso, 67100, Assergi, AQ, ItalyD. V. PodaInstitut National de Physique Nucléaire et de Physique des ParticulesO. G. PolischukInstitute for Nuclear Research, Kiev, 03028, UkraineE. PrevitaliDipartimento di Fisica, Università di Milano-Bicocca, 20126, Milan, ItalyT. RedonCSNSM, Univ. Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405, Orsay, FranceS.V. RozovLaboratory of Nuclear Problems, JINR, 141980, Dubna, Moscow region, RussiaC. RusconiDepartment of Physics and Astronomy, University of South Carolina, Columbia, SC, 29208, USAV. SanglardCentre National de la Recherche ScientifiqueK. SchäffnerINFN, Laboratori Nazionali del Gran Sasso, 67100, Assergi, AQ, ItalyB. SchmidtNuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USAYang ShenKey Laboratory of Nuclear Physics and Ion-beam Application (MOE), Fudan University, Shanghai, 200433, People’s Republic of ChinaV.N. ShlegelNikolaev Institute of Inorganic Chemistry, 630090, Novosibirsk, RussiaB. SiebenbornKarlsruhe Institute of Technology, Institut für Kernphysik, 76021, Karlsruhe, GermanyV. SinghDepartment of Physics, University of California, Berkeley, CA, 94720, USAS. SorbinoINFN, Sezione di Roma, P.le Aldo Moro 2, 00185, Rome, ItalyC. TomeiINFN, Sezione di Roma, P.le Aldo Moro 2, 00185, Rome, ItalyV. I. TretyakInstitute for Nuclear Research, Kiev, 03028, UkraineV. I. UmatovNational Research Centre Kurchatov Institute, Institute of Theoretical and Experimental Physics, 117218, Moscow, RussiaL. VagneronCentre National de la Recherche ScientifiqueM. VelázquezUniversité Grenoble AlpesM. WeberKarlsruhe Institute of Technology, Institut für Prozessdatenverarbeitung und Elektronik, 76021, Karlsruhe, GermanyB. WelliverNuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USAL. A. WinslowMassachusetts Institute of Technology, Cambridge, MA, 02139, USAM. XueDepartment of Modern Physics, University of Science and Technology of China, Hefei, 230027, People’s Republic of ChinaE. YakushevLaboratory of Nuclear Problems, JINR, 141980, Dubna, Moscow region, RussiaA. ZolotarovaCentre National de la Recherche Scientifique

2020en

ABI

Annotatsiya

Abstract CUPID-Mo is a bolometric experiment to search for neutrinoless double-beta decay ( $$0\nu \beta \beta $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mn>0</mml:mn><mml:mi>ν</mml:mi><mml:mi>β</mml:mi><mml:mi>β</mml:mi></mml:mrow></mml:math> ) of $$^{100}\hbox {Mo}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow/><mml:mn>100</mml:mn></mml:msup><mml:mtext>Mo</mml:mtext></mml:mrow></mml:math> . In this article, we detail the CUPID-Mo detector concept, assembly and installation in the Modane underground laboratory, providing results from the first datasets. The CUPID-Mo detector consists of an array of 20 $$^{100}\hbox {Mo}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow/><mml:mn>100</mml:mn></mml:msup><mml:mtext>Mo</mml:mtext></mml:mrow></mml:math> -enriched 0.2 kg $$\hbox {Li}_2\hbox {MoO}_4$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mtext>Li</mml:mtext><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mtext>MoO</mml:mtext><mml:mn>4</mml:mn></mml:msub></mml:mrow></mml:math> crystals operated as scintillating bolometers at $$\sim 20\hbox { mK}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mo>∼</mml:mo><mml:mn>20</mml:mn><mml:mspace/><mml:mtext>mK</mml:mtext></mml:mrow></mml:math> . The $$\hbox {Li}_2\hbox {MoO}_4$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mtext>Li</mml:mtext><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mtext>MoO</mml:mtext><mml:mn>4</mml:mn></mml:msub></mml:mrow></mml:math> crystals are complemented by 20 thin Ge optical bolometers to reject $$\alpha $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>α</mml:mi></mml:math> events by the simultaneous detection of heat and scintillation light. We observe a good detector uniformity and an excellent energy resolution of 5.3 keV (6.5 keV) FWHM at 2615 keV, in calibration (physics) data. Light collection ensures the rejection of $$\alpha $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>α</mml:mi></mml:math> particles at a level much higher than 99.9% – with equally high acceptance for $$\gamma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>γ</mml:mi></mml:math> / $$\beta $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>β</mml:mi></mml:math> events – in the region of interest for $$^{100}\hbox {Mo}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow/><mml:mn>100</mml:mn></mml:msup><mml:mtext>Mo</mml:mtext></mml:mrow></mml:math> $$0\nu \beta \beta $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mn>0</mml:mn><mml:mi>ν</mml:mi><mml:mi>β</mml:mi><mml:mi>β</mml:mi></mml:mrow></mml:math> . We present limits on the crystals’ radiopurity: $$\le 3~\mu \hbox {Bq/kg}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mo>≤</mml:mo><mml:mn>3</mml:mn><mml:mspace/><mml:mi>μ</mml:mi><mml:mtext>Bq/kg</mml:mtext></mml:mrow></mml:math> of $$^{226}\hbox {Ra}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow/><mml:mn>226</mml:mn></mml:msup><mml:mtext>Ra</mml:mtext></mml:mrow></mml:math> and $$\le 2~\mu \hbox {Bq/kg}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mo>≤</mml:mo><mml:mn>2</mml:mn><mml:mspace/><mml:mi>μ</mml:mi><mml:mtext>Bq/kg</mml:mtext></mml:mrow></mml:math> of $$^{232}\hbox {Th}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow/><mml:mn>232</mml:mn></mml:msup><mml:mtext>Th</mml:mtext></mml:mrow></mml:math> . We discuss the science reach of CUPID-Mo, which can set the most stringent half-life limit on the $$^{100}\hbox {Mo}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow/><mml:mn>100</mml:mn></mml:msup><mml:mtext>Mo</mml:mtext></mml:mrow></mml:math> $$0\nu \beta \beta $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mn>0</mml:mn><mml:mi>ν</mml:mi><mml:mi>β</mml:mi><mml:mi>β</mml:mi></mml:mrow></mml:math> decay in half-a-year’s livetime. The achieved results show that CUPID-Mo is a successful demonstrator of the technology developed by the LUMINEU project and subsequently selected for the CUPID experiment, a proposed follow-up of CUORE, the currently running first tonne-scale bolometric $$0\nu \beta \beta $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mn>0</mml:mn><mml:mi>ν</mml:mi><mml:mi>β</mml:mi><mml:mi>β</mml:mi></mml:mrow></mml:math> experiment.

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DOI: 10.1140/epjc/s10052-019-7578-6

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