Development and underground test of radiopure ZnMoO4 scintillating bolometers for the LUMINEU 0 nu 2 beta project

E. Armengaud; Q. Arnaud; C. Augier; A. Benoit; L. Berge; S. Boiko R.; T. Bergmann; J. Blueme,; A. Broniatowski; V. Brudanin; P. Camus I.; A. Cazes; M. Chapellier; F. Charlieux; M. Chernyak D.; N. Coron; P. Coulter; A. Danevich F.; T. De Boissiere; R. Decourt; M. De Jesus; L. Devoyon; A. Drillien; L. Dumoulin; K. Eitel; C. Enss; D. Filosofov; A. Fleischmann; N. Foerster; N. Fourches; J. Gascon; L. Gastaldo; G. Gerbier; A. Giuliani; D. Gray; M. Gros; L. Hehn; S. Henry; S. Herve; G. Heuermann; V. Humbert; M. Ivanov I.; A. Juillard; C. Kefelian; M. Kleifges; H. Kluck; V. Kobychev V.; F. Koskas; V. Kozlov; H. Kraus; A. Kudryavtsev,v.; Hélène Le Sueur; M. Loidl; P. Magnie,; P. Makarov E.; M. Mancuso; P. De Marcillac; S. Marnieros; C. Marrache-Kikuchi; A. Menshikov; G. Nasonov S.; -F. Navick X.; C. Nones; E. Olivieri; P. Pari; B. Paul; Y. Penichot; G. Pessina; M.C. Piro; O. Plantevin; V. Poda D.; T. Redon; M. Robinson; M. Rodrigues; S. Rozov; V. Sanglard; B. Schmidt; S. Scorza; N. Shlegel V.; B. Siebenborn; O. Strazzer; D. Tcherniakhovski; M. Tenconi; L. Torres; I. Tretyak V.; L. Vagneron; V. Vasiliev Ya; Matias Velázquez; Oudomsack Viraphong; J. Walker R.; M. Weber; E. Yakushev; X. Zhang; N. Zhdankov V.

doi:10.1088/1748-0221/10/05/P05007

Development and underground test of radiopure ZnMoO4 scintillating bolometers for the LUMINEU 0 nu 2 beta project

E. Armengaud ¹ Q. Arnaud ² C. Augier ² A. Benoit ² L. Berge ³ S. Boiko R. T. Bergmann J. Blueme, A. Broniatowski ³ V. Brudanin P. Camus I. A. Cazes ² M. Chapellier ³ F. Charlieux ² M. Chernyak D. N. Coron P. Coulter A. Danevich F. T. De Boissiere ¹ R. Decourt M. De Jesus ² L. Devoyon A. Drillien ³ L. Dumoulin ³ K. Eitel C. Enss D. Filosofov A. Fleischmann N. Foerster N. Fourches ¹ J. Gascon ² L. Gastaldo G. Gerbier ¹ A. Giuliani ³ D. Gray M. Gros ¹ L. Hehn S. Henry S. Herve ³ G. Heuermann V. Humbert ³ M. Ivanov I. A. Juillard ² C. Kefelian ² M. Kleifges H. Kluck V. Kobychev V. F. Koskas V. Kozlov H. Kraus A. Kudryavtsev,v. Hélène Le Sueur ³ M. Loidl P. Magnie, P. Makarov E. M. Mancuso ³ P. De Marcillac ³ S. Marnieros ³ C. Marrache-Kikuchi ³ A. Menshikov G. Nasonov S. -F. Navick X. C. Nones ¹ E. Olivieri ³ P. Pari B. Paul Y. Penichot ¹ G. Pessina M.C. Piro ³ O. Plantevin ³ V. Poda D. ³ T. Redon M. Robinson M. Rodrigues S. Rozov V. Sanglard ² B. Schmidt S. Scorza N. Shlegel V. B. Siebenborn O. Strazzer D. Tcherniakhovski M. Tenconi ³ L. Torres I. Tretyak V. L. Vagneron ² V. Vasiliev Ya Matias Velázquez ⁴ Oudomsack Viraphong ⁴ J. Walker R. M. Weber E. Yakushev X. Zhang N. Zhdankov V.

1 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers

2 IPNL - Institut de Physique Nucléaire de Lyon

3 CSNSM PS1

CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière

4 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux

Abstract : The LUMINEU (Luminescent Underground Molybdenum Investigation for NEUtrino mass and nature) project envisages a high-sensitivity search for neutrinoless double beta (0 nu 2 beta) decay of Mo-100 with the help of scintillating bolometers based on zinc molybdate (ZnMoO4) crystals. One of the crucial points for the successful performance of this experiment is the development of a protocol for producing high quality large mass ZnMoO4 crystal scintillators with extremely high internal radiopurity. Here we report a significant progress in the development of large volume ZnMoO4 crystalline boules (with mass up to 1 kg) from deeply purified materials. We present and discuss the results achieved with two ZnMoO4 samples (with mass of about 0.3 kg each): one is a precursor of the LUMINEU project, while the other one was produced in the framework of LUMINEU with an improved purification / crystallization procedure. The two crystals were measured deep underground as scintillating bolometers in the EDELWEISS dilution refrigerator at the Laboratoire Souterrain de Modane (France) protected by a rock overburden corresponding to 4800 m w.e. The results indicate that both tested crystals are highly radiopure. However, the advanced LUMINEU sample shows a clear improvement with respect to the precursor, exhibiting only a trace internal contamination related with Po-210 at the level of 1 mBq/kg, while the activity of Ra-226 and Th-228 is below 0.005 mBq/kg. This demonstrates that the LUMINEU purification and crystal-growth procedures are very efficient and leads to radiopurity levels which exceedingly satisfy not only the LUMINEU goals but also the requirements of a next-generation 0 nu 2 beta experiment.

Keywords : Double-beta decay detectors TUNGSTATES LUMINESCENCE GROWTH PARTICLE PHYSICS RADIOACTIVE CONTAMINATION SINGLE-CRYSTALS CRYSTAL SCINTILLATORS DARK-MATTER SEARCH GRADIENT CZOCHRALSKI TECHNIQUE Hybrid detectors gas and liquid scintillators) DOUBLE-BETA-DECAY Cryogenic detectors Scintillators scintillation and light emission processes (solid

Type de document :

Article dans une revue

Journal of Instrumentation, IOP Publishing, 2015, 10 (05), P05007 (19 p.). 〈10.1088/1748-0221/10/05/P05007〉

Domaine :

Physique [physics]

Physique [physics] / Matière Condensée [cond-mat]

Physique [physics] / Matière Condensée [cond-mat] / Science des matériaux [cond-mat.mtrl-sci]

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http://hal.in2p3.fr/in2p3-01186517
Contributeur : Emilie Bonnardel <>
Soumis le : mardi 25 août 2015 - 10:34:21
Dernière modification le : jeudi 15 mars 2018 - 11:40:10

Development and underground test of radiopure ZnMoO4 scintillating bolometers for the LUMINEU 0 nu 2 beta project

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Development and underground test of radiopure ZnMoO4 scintillating bolometers for the LUMINEU 0 nu 2 beta project

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