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17 results on '"I. Vanyushin"'

1. Astroparticle physics with a customized low-background broad energy Germanium detector

Author

L. E. Leviner, L. Mizouni, Paul N. Luke, S. R. Elliott, Andrew Hime, Craig E. Aalseth, W. Bugg, Reynold J. Cooper, H. Salazar, A. S. Barabash, H. A. Farach, S. I. Konovalov, M. L. Miller, Chao Zhang, J. I. Collar, O.I. Kochetov, K. Gusey, J. Strain, G. K. Giovanetti, S. Zimmerman, D. Steele, V. Egorov, R. D. Martin, F. T. Avignone, Henning O. Back, Eric W. Hoppe, R. L. Varner, Mark Amman, Yu. Efremenko, D.A. Peterson, Reyco Henning, C. Keller, Harry S. Miley, H. Yaver, A. Knecht, Keenan Thomas, V. V. Timkin, Dongming Mei, J. Esterline, J. Kephart, D. G. Phillips, J. Qian, James E. Fast, M. Bergevin, P. J. Doe, J. C. Loach, Yuen-Dat Chan, R. G. H. Robertson, G. C. Harper, J. Diaz, E. Yakushev, A. L. Hallin, T. D. Van Wechel, W. Xiang, M. F. Kidd, K. J. Keeter, V.B. Brudanin, Keith Rielage, M. Shirchenko, Alexis G. Schubert, Erin S. Fuller, N. Fields, R.A. Johnson, John L. Orrell, B. K. Fujikawa, K. P. Rykaczewski, Michael G. Marino, L. Rodriguez, Albert Young, Tatsushi Shima, S. MacMullin, F. E. Bertrand, M. A. Howe, R. J. Creswick, M. Boswell, H. Ejiri, Todd W. Hossbach, G. Capps, Chang-Hong Yu, V. M. Gehman, V. E. Guiseppe, Kai Vetter, Masaharu Nomachi, Ryuta Hazama, G. Swift, James H. Ely, Martin E. Keillor, Richard T. Kouzes, Werner Tornow, D. C. Radford, G. Prior, Matthew Busch, J. F. Wilkerson, P. Finnerty, B. A. Wolfe, P. S. Barbeau, Vladimir Yumatov, T.H. Burritt, Alan Poon, J. A. Detwiler, I. Vanyushin, and A. W. Meyers

Subjects
Cryostat, Astroparticle physics, Physics, Nuclear and High Energy Physics, Detector, FOS: Physical sciences, Particle detector, Semiconductor detector, Nuclear physics, MAJORANA, Double beta decay, Nuclear Experiment (nucl-ex), Neutrino, Nuclear Experiment, Instrumentation
Abstract

The MAJORANA Collaboration is building the MAJORANA DEMONSTRATOR, a 60 kg array of high purity germanium detectors housed in an ultra-low background shield at the Sanford Underground Laboratory in Lead, SD. The MAJORANA DEMONSTRATOR will search for neutrinoless double-beta decay of 76Ge while demonstrating the feasibility of a tonne-scale experiment. It may also carry out a dark matter search in the 1-10 GeV/c^2 mass range. We have found that customized Broad Energy Germanium (BEGe) detectors produced by Canberra have several desirable features for a neutrinoless double-beta decay experiment, including low electronic noise, excellent pulse shape analysis capabilities, and simple fabrication. We have deployed a customized BEGe, the MAJORANA Low-Background BEGe at Kimballton (MALBEK), in a low-background cryostat and shield at the Kimballton Underground Research Facility in Virginia. This paper will focus on the detector characteristics and measurements that can be performed with such a radiation detector in a low-background environment., Comment: Submitted to NIMA Proceedings, SORMA XII. 9 pages, 4 figures

Published
2011

2. Chemical purification of molybdenum samples for the NEMO 3 experiment

Author

V. G. Egorov, X. Sarazin, J. Baker, F. Laplanche, A. S. Barabash, Vit Vorobel, F. Leccia, J.L. Guyonnet, R. Arnold, J.E. Campagne, D. Blum, C. S. Sutton, V. B. Brudanin, I. Linck, I. Nikolic-Audit, C. Longuemare, G. Szklarz, V. F. Kuzichev, J. L. Reyss, V. N. Kornoukhov, I. Stekl, Ts. Vylov, F. Hubert, Ch. Marquet, H. W. Nicholson, C. Augier, I. Vanyushin, V.E. Kovalenko, C. L. Riddle, I. Pilugin, T. Filipova, F. Mauger, E. Caurier, O. Bing, F. Piquemal, V. I. Umatov, A. J. Caffrey, Jouni Suhonen, D. Lalanne, O.I. Kochetov, D. Dassié, F. Scheibling, I. Kisel, K. Errahmane, Vl.I. Tretyak, Ph. Hubert, S. Jullian, and V. V. Timkin

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Spectrometer, chemistry, Molybdenum, Double beta decay, Radiochemistry, chemistry.chemical_element, Germanium, Context (language use), Instrumentation
Abstract

Most currently, viable double beta decay experiments require highly enriched isotopic sources. These sources must be extraordinarily free of radioactive contamination. The double beta decay experiment NEMO 3 will study 100Mo, for which physical and chemical purification techniques have been investigated. The success of the chemical purification process is discussed in the context of ultra-low background, high-purity germanium spectrometer measurements.

Published
2001

3. Influence of neutrons and γ-rays in the Fréjus underground laboratory on the NEMO experiment

Author

I. Pilugin, O.I. Kochetov, F. Scheibling, F. Leccia, Ch. Marquet, L. Vala, I. Nikolic-Audit, I. Vanyushin, J. Baker, F. Hubert, V. B. Brudanin, V. V. Timkin, A. Vareille, H. Ohsumi, Ts. Vylov, A. S. Barabash, J.E. Campagne, I. Linck, C. Augier, I. Kisel, V. I. Umatov, V.E. Kovalenko, J. Caffrey, F. Mauger, I. Stekl, G. Szklarz, D. Lalanne, C.S. Sutton, Vit Vorobel, V. G. Egorov, C. Jollet, K. Errahmane, Jouni Suhonen, R. Arnold, J.L. Guyonnet, D. Blum, J. L. Reyss, V. N. Kornoukhov, H. W. Nicholson, Vl.I. Tretyak, D. Dassié, T. Filipova, E. Caurier, Ph. Hubert, F. Laplanche, O. Bing, C. Longuemare, S. Jullian, X. Sarazin, R. Eschbach, and F. Piquemal

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, MAJORANA, Particle physics, Photomultiplier, Beta (plasma physics), Double beta decay, Monte Carlo method, Detector, Neutron, Neutrino, Instrumentation
Abstract

To be sensitive to an effective Majorana neutrino mass, 〈 m ν 〉, on the order of 0.1 eV, the NEMO 3 double beta (ββ(0ν)) decay experiment requires precise knowledge and control of the backgrounds. The effect of neutrons and γ-rays from the Frejus underground laboratory (LSM, Laboratoire Souterrain de Modane) has been studied during 10 700 h of data collection. The data were taken with a NEMO 2 prototype detector using different shield configurations. Monte Carlo calculations with GEANT/MICAP code and a new library of γ-rays from neutron captures are presented. The implied consequences for the NEMO 3 detector which is under construction are discussed. The neutrinoless double beta decay background induced by neutrons and γ-rays within the LSM will be suppressed to the very suitable level of 0.1 event in a live time of five years given the appropriate shield and magnetic field.

Published
2001

4. Limits on different Majoron decay modes of Mo, Cd, Se and Zr for neutrinoless double beta decays in the NEMO-2 experiment

Author

Ph. Hubert, Rodolfo Gurriaran, I. Linck, S. Jullian, F. Laplanche, C.S. Sutton, V. G. Egorov, F. Leccia, X. Sarazin, H. Nicholson, V. V. Timkin, D. Lallane, A. J. Caffrey, D. Dassié, J. Baker, V. Vasiliev, R. Arnold, V. B. Brudanin, F. Scheibling, I. Pilyugin, G. Szklarz, I. Vanyushin, T. Filipova, E. Caurier, Ch. Marquet, V. I. Umatov, I. Kisel, D. Blum, A. S. Barabash, A. Vareille, C. Longuemare, J.L. Guyonnet, J.E. Campagne, J. L. Reyss, V. N. Kornoukhov, C. Augier, Jouni Suhonen, Ts. Vylov, V.E. Kovalenko, F. Mauger, R. Torres, O.I. Kochetov, F. Piquemal, and F. Hubert

Subjects
Nuclear physics, Coupling constant, Physics, Nuclear and High Energy Physics, Particle physics, Double beta decay, Detector, Underground laboratory, Beta (velocity), Lower limit, Majoron
Abstract

The NEMO-2 tracking detector located in the Frejus Underground Laboratory was designed as a prototype for the NEMO-3 detector and to study different modes of double beta decay. Measurements with 100 Mo, 116 Cd, 82 Se and 96 Zr were carried out. Presented here are the experimental half-life limits on double beta decays for new Majoron emission modes and limits on effective neutrino–Majoron coupling constants.

Published
2000

5. The Majorana Demonstrator: A search for neutrinoless double-beta decay of germanium-76

Author

A.G. Schuberta, E. Aguayo, F.T. Avignone III, C. Zhang, H.O. Back, A.S. Barabash, M. Bergevin, F.E. Bertrand, M. Boswell, V. Brudanin, M. Busch, Y.D. Chan, C.D. Christofferson, J.I. Collar, D.C. Combs, R.J. Cooper, J.A. Detwiler, J. Leon, P.J. Doe, Yu. Efremenko, V. Egorov, H. Ejiri, S.R. Elliott, J. Esterline, J.E. Fast, N. Fields, P. Finnerty, F.M. Fraenkle, V.M. Gehman, G.K. Giovanetti, M.P. Green, V.E. Guiseppe, K. Gusey, A.L. Hallin, R. Hazama, R. Henning, A. Hime, E.W. Hoppe, M. Horton, S. Howard, M.A. A. Howe, R.A. Johnson, K.J. Keeter, M.E. Keillor, C. Keller, J.D. Kephart, M.F. Kidd, A. Knecht, O. Kochetov, S.I. Konovalov, R.T. Kouzes, B. LaFerriere, B.H. LaRoque, L.E. Leviner, J.C. Loach, S. MacMullin, M.G. Marino, R.D. Martin, D.-M. Mei, J. Merriman, M.L. Miller, L. Mizouni, M. Nomachi, J.L. Orrell, N. Overman, D.G. Phillips II, A.W.P. Poon, G. Perumpilly, G. Prior, D.C. Radford, K. Rielage, R.G.H. Robertson, M.C. Ronquest, T. Shima, M. Shirchenko, K.J. Snavely, V. Sobolev, D. Steele, J. Strain, K. Thomas, V. Timkin, W. Tornow, I. Vanyushin, R.L. Varner, K. Vetter, K. Vorren, J.F. Wilkerson, B.A. Wolfe, E. Yakushev, A.R. Young, C.-H. Yu, and V. Yumatov

Subjects
Physics, Particle physics, Bolometer, chemistry.chemical_element, Germanium, Lepton number, law.invention, Nuclear physics, MAJORANA, CUORE, chemistry, law, Double beta decay, Neutrino, Absolute scale
Abstract

The observation of neutrinoless double-beta decay would determine whether the neutrino is a Majorana particle and provide information on the absolute scale of neutrino mass. The Majorana Collaboration is constructing the Demonstrator, an array of germanium detectors, to search for neutrinoless double-beta decay of 76Ge. The Demonstrator will contain 40kg of germanium; up to 30kg will be enriched to 86% in 76Ge. The Demonstrator will be deployed deep underground in an ultra-low-background shielded environment. Operation of the Demonstrator aims to determine whether a future tonne-scale germanium experiment can achieve a background goal of one count per tonne-year in a 4-keV region of interest around the 76Ge neutrinoless double-beta decay Q-value of 2039 keV.

Published
2012

6. Measurement of theββDecay Half-Life ofTe130with the NEMO-3 Detector

Author

Ts. Vylov, O.I. Kochetov, F. Mauger, B. Guillon, J. L. Reyss, V. Kovalenko, B. Richards, G. Szklarz, Jouni Suhonen, F. Piquemal, J. Baker, S. Torre, F. Mamedov, C. Augier, M. Kauer, R. B. Pahlka, Ch. Marquet, Yu. Shitov, V. Vasiliev, A. Chapon, C. Hugon, Z. J. Liptak, Karol Lang, X. Garrido, Ph. Hubert, A.A. Smolnikov, V. B. Brudanin, G. Broudin-Bay, I. Vanyushin, S. Jullian, Fedor Šimkovic, Igor Nemchenok, J. Mott, Guillaume Lutter, C. M. Jackson, F. Nova, A Zukauskas, T. Lamhamdi, V. G. Egorov, R. Saakyan, X. Sarazin, L. Vála, A. S. Barabash, A. Basharina-Freshville, A. J. Caffrey, J. Grozier, V. V. Timkin, A. Nachab, Juergen Thomas, S. I. Konovalov, P. Novella, J. Martín-Albo, A. A. Klimenko, L. Simard, C. H. Nguyen, F. Perrot, C.S. Sutton, V. I. Umatov, D. Lalanne, R. Arnold, R. L. Flack, S. Blondel, J. S. Ricol, M. Bongrand, Vl. I. Tretyak, S. Söldner-Rembold, I. Stekl, Vit Vorobel, E. Chauveau, H. Ohsumi, and Dominique Durand

Subjects
Physics, Isotope, 010308 nuclear & particles physics, Stable isotope ratio, General Physics and Astronomy, Half-life, chemistry.chemical_element, 01 natural sciences, Beta decay, Nuclear physics, chemistry, Double beta decay, 0103 physical sciences, Neutrino Ettore Majorana Observatory, 010306 general physics, Tellurium, Radioactive decay
Abstract

This Letter reports results from the NEMO-3 experiment based on an exposure of 1275 days with 661g of 130Te in the form of enriched and natural tellurium foils. With this data set the double beta decay rate of 130Te is found to be non-zero with a significance of 7.7 standard deviations and the half-life is measured to be T1/2 = (7.0 +/- 0.9(stat) +/- 1.1(syst)) x 10^{20} yr. This represents the most precise measurement of this half-life yet published and the first real-time observation of this decay.

Published
2011

7. The Majorana Experiment

Author

M. Shirchenko, D. C. Combs, J. H. Merriman, John L. Orrell, Albert Young, Eric W. Hoppe, V. Sobolev, Michael G. Marino, A. S. Barabash, V. G. Egorov, Martin E. Keillor, E. Yakushev, Jonathan D. Leon, B. H. LaRoque, K. Gusey, Yu. Efremenko, N. Fields, Matthew Busch, P. J. Doe, Alexis G. Schubert, G. Perumpilly, F. M. Fraenkle, M. C. Ronquest, V. M. Gehman, D. G. Phillips, James E. Fast, J. A. Detwiler, J. F. Wilkerson, M. P. Green, M. Horton, P. Finnerty, M. L. Miller, Masaharu Nomachi, B. A. Wolfe, Vladimir Yumatov, K. J. Keeter, J. I. Collar, Stanley M. Howard, H. Ejiri, A. W. P. Poon, Andrew Hime, S. MacMullin, Dongming Mei, S. I. Konovalov, R. D. Martin, Henning O. Back, C. D. Christofferson, Richard T. Kouzes, C. Keller, G. K. Giovanetti, Keith Rielage, R. A. Johnson, S. R. Elliott, R. G. H. Robertson, L. Mizouni, Kai Vetter, K. Vorren, Werner Tornow, D. C. Radford, F. E. Bertrand, C.-H. Yu, M. Boswell, Ryuta Hazama, Nicole R. Overman, L. E. Leviner, K. J. Snavely, V. V. Timkin, I. Vanyushin, Brian D. LaFerriere, G. Prior, Jeremy D. Kephart, J. Strain, V. E. Guiseppe, D. Steele, F. T. Avignone, E. Aguayo, Yuen-Dat Chan, R. L. Varner, Reyco Henning, A. Knecht, O.I. Kochetov, J. Esterline, Keenan Thomas, J. C. Loach, M. A. Howe, Chao Zhang, M. F. Kidd, M. Bergevin, Tatsushi Shima, A. L. Hallin, Reynold J. Cooper, and V. B. Brudanin

Subjects
Nuclear physics, Physics, Particle physics, MAJORANA, Double beta decay, Elementary particle, Invariant mass, Fermion, Neutrino, Radioactive decay, Lepton
Abstract

The Majorana collaboration is actively pursuing research and development aimed at a tonne-scale {sup 76}Ge neutrinoless double-beta decay ({beta}{beta}(0{nu})-decay) experiment. The current, primary focus is the construction of the Majorana Demonstrator experiment, an R and D effort that will field approximately 40 kg of germanium detectors with mixed enrichment levels. This article provides a status update on the construction of the Demonstrator.

Published
2011

8. Spectral modeling of scintillator for the NEMO-3 and SuperNEMO detectors

Author

J. S. Ricol, Yoichi Tamagawa, Karol Holý, G. Luzón, X. Garrido, A. S. Barabash, Y. Lemière, Ts. Vylov, B. Richards, J. J. Horkley, X. Sarazin, A. Chapon, J. Argyriades, Ph. Hubert, S. Cebrián, Vl.I. Tretyak, F. Mauger, A. Nachab, A. Žukauskas, J. J. Evans, Juergen Thomas, O.I. Kochetov, Luis M. Serra, J. K. Sedgbeer, A. J. Caffrey, D. Lalanne, S. Jullian, S. Söldner-Rembold, G. Szklarz, F. Mamedov, V.B. Brudanin, T. Dafni, Ch. Marquet, M. Bongrand, I. Nasteva, C. H. Nguyen, Ruben Saakyan, N. Yahlali, R. Arnold, L. Simard, I. G. Irastorza, V. E. Kovalenko, C. Hugon, F. Monrabal, R. L. Flack, C.S. Sutton, Guillaume Lutter, N. Fatemi-Ghomi, D. Waters, G. Broudin-Bay, R. Vasiliev, K. Lang, L. Vála, Yorihito Sugaya, F. Nova, H. Ohsumi, S. I. Konovalov, E. Chauveau, Pavel P. Povinec, A.A. Smolnikov, Dominique Durand, M. Kauer, R. B. Pahlka, Robert Thompson, I. Vanyushin, Z. Daraktchieva, J. S. Díaz, P. Novella, V.I. Tretyak, J. Martín-Albo, C. L. Riddle, Nobuhiro Ishihara, V. I. Umatov, C. M. Jackson, B. Guillon, C. Augier, A. Basharina-Freshville, A Rodríguez, F. Piquemal, V. V. Timkin, Ken-Ichi Fushimi, Fedor Šimkovic, Igor Nemchenok, Hector Gomez, J. Baker, Yu. Shitov, S. Kanamaru, F.J. Iguaz, F. Perrot, V. Egorov, A. Holin, I. Stekl, Vit Vorobel, Particle Physics and Astronomy Research Council (PPARC), Science and Technology Facilities Council (STFC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and SuperNEMO

Subjects
Nuclear and High Energy Physics, Photomultiplier, Technology, Physics - Instrumentation and Detectors, Photon, Physics::Instrumentation and Detectors, CODE, FOS: Physical sciences, Scintillator, 01 natural sciences, High Energy Physics - Experiment, Physics, Particles & Fields, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0202 Atomic, Molecular, Nuclear, Particle And Plasma Physics, Double beta decay, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Calibration, Plastic scintillators, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Nuclear Science & Technology, Instrumentation, Instruments & Instrumentation, Scintillation, physics.ins-det, Physics, Science & Technology, 010308 nuclear & particles physics, hep-ex, MO-100, Detector, Instrumentation and Detectors (physics.ins-det), Nuclear & Particles Physics, Calorimeter, Physics, Nuclear, Physical Sciences, GEANT 4, DOUBLE-BETA DECAY, Optical photon transport
Abstract

We have constructed a GEANT4-based detailed software model of photon transport in plastic scintillator blocks and have used it to study the NEMO-3 and SuperNEMO calorimeters employed in experiments designed to search for neutrinoless double beta decay. We compare our simulations to measurements using conversion electrons from a calibration source of $\rm ^{207}Bi$ and show that the agreement is improved if wavelength-dependent properties of the calorimeter are taken into account. In this article, we briefly describe our modeling approach and results of our studies., Comment: 16 pages, 10 figures

Published
2010

9. Results of the BiPo-1 prototype for radiopurity measurements for the SuperNEMO double beta decay source foils

Author

D. Waters, Ruben Saakyan, K. Holy, I. G. Irastorza, Guillaume Lutter, Y. Tamagawa, F. Piquemal, S. I. Konovalov, E. Chauveau, Pavel P. Povinec, D. Breton, Masaharu Nomachi, G. Broudin-Bay, R. Vasiliev, I. Vanyushin, O.I. Kochetov, Y. Lemière, A. S. Barabash, V. Egorov, Vit Vorobel, L. Simard, J. S. Díaz, V.I. Tretyak, V. E. Kovalenko, S. Söldner-Rembold, A. Holin, V. Vasiliev, Nobuhiro Ishihara, K-I. Fushima, A. Chapon, J. Argyriades, N. Yahali, J. J. Evans, C. H. Nguyen, V. V. Timkin, F.J. Iguaz, A Rodríguez, C.S. Sutton, M. Kauer, R. B. Pahlka, X. Garrido, G. Szklarz, C. M. Jackson, C. Hugon, S. Cebrián, G. Luzón, Ch. Marquet, A. Žukauskas, F. Nova, F. Perrot, F. Mauger, V.B. Brudanin, Luis M. Serra, J. K. Sedgbeer, V. I. Umatov, B. Guillon, X. Sarazin, R. Arnold, A. J. Caffrey, B. Richards, R. L. Flack, Fedor Šimkovic, F. Monrabal, Karol Lang, S. Jenzer, T. Dafni, Igor Nemchenok, A. Nachab, F. Mamedov, C. Bourgeois, Juergen Thomas, H. Gómez, C. Augier, J. J. Horkey, M. Briére, M. Bongrand, L. Vála, I. Stekl, J. Baker, Yu. Shitov, J. Hommet, T. Lamhamdi, C. L. Riddle, A. Basharina-Freshville, Ph. Hubert, S. Jullian, Vl.I. Tretyak, H. Ohsumi, Dominique Durand, J. S. Ricol, Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Instituto de Fisica Corpuscular (IFIC), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Universitat de València (UV), and SuperNEMO

Subjects
SuperNEMO, Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, FOS: Physical sciences, Radiopurity, Scintillator, 010403 inorganic & nuclear chemistry, 01 natural sciences, Particle identification, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Double beta decay, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Sensitivity (control systems), Neutrino Ettore Majorana Observatory, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Instrumentation, Physics, 010308 nuclear & particles physics, Detector, Active surface area, NEMO-3, Instrumentation and Detectors (physics.ins-det), 3. Good health, 0104 chemical sciences, Underground laboratory, BiPo, Majorana neutrino
Abstract

The development of BiPo detectors is dedicated to the measurement of extremely high radiopurity in (TI)-T-208 and Bi-214 for the SuperNEMO double beta decay source foils. A modular prototype, called BiPo-1, with 0.8 m(2) of sensitive surface area, has been running in the Modane Underground Laboratory since February, 2008. The goal of BiPo-1 is to measure the different components of the background and in particular the surface radiopurity of the plastic scintillators that make up the detector. The first phase of data collection has been dedicated to the measurement of the radiopurity in (TI)-T-208. After more than one year of background measurement, a surface activity of the scintillators of A((TI)-T-208) = 1.5 μBq/m(2) is reported here. Given this level of background, a larger BiPo detector having 12 m(2) of active surface area, is able to qualify the radiopurity of the SuperNEMO selenium double beta decay foils with the required sensitivity of A((TI)-T-208), The authors would like to thank the Modane Underground Laboratory staff for their technical support in running BiPo-1, and the IN2P3 Computing Center in Lyon for its software and computing support. This work was supported by the French Grant ANR-06-BLAN-0299 funded by the Agence Nationale de la Recherche, by the Spanish MICINN for the FPA2007-62833, FPA2008-03456 and FPA2006-12120-003 contracts, part of which comes from FEDER funds, by the Russian RFBR 09-02-00737 Grant and by the UK STFC.

Published
2010

10. Measurement of the double-βdecay half-life ofNd150and search for neutrinoless decay modes with the NEMO-3 detector

Author

C.S. Sutton, J. Argyriades, G. Broudin, I. Nemchenok, D. Durand, H. Ohsumi, V. Egorov, Ph. Hubert, Ts. Vylov, C. Longuemare, D. Lalanne, Yu. Shitov, Jouni Suhonen, M. Bongrand, A.A. Smolnikov, I. Vanyushin, S. Snow, S. Jullian, S. Söldner-Rembold, A.J. Caffrey, V. Brudanin, J. S. Ricol, I. Nasteva, F. Nova, G. Szklarz, N. Fatemi-Ghomi, A. S. Barabash, X. Sarazin, C. Augier, Vit Vorobel, J. Baker, L. Vála, V. I. Umatov, Z. Daraktchieva, R. Arnold, Karol Lang, J. Jerie, V. Vasiliev, L. Simard, Y. Lemière, A. Nachab, R. Flack, Juergen Thomas, Vl.I. Tretyak, P. Novella, Ch. Marquet, F. Mauger, J. Martín-Albo, I. Štekl, V. Kovalenko, A. A. Klimenko, Ruben Saakyan, S. I. Konovalov, Guillaume Lutter, E. Chauveau, J. L. Reyss, O. Kochetov, M. Kauer, S. King, R. B. Pahlka, Fedor Šimkovic, V. Timkin, T. Lamhamdi, A. Basharina-Freshville, F. Piquemal, and F. Perrot

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Elementary particle, 7. Clean energy, 01 natural sciences, Beta decay, Nuclear physics, MAJORANA, Double beta decay, 0103 physical sciences, Neutrino, 010306 general physics, Radioactive decay, Majoron, Lepton
Abstract

The half-life for double-{beta} decay of {sup 150}Nd has been measured by the NEMO-3 experiment at the Modane Underground Laboratory. Using 924.7 days of data recorded with 36.55 g of {sup 150}Nd, we measured the half-life for 2{nu}{beta}{beta} decay to be T{sub 1/2}{sup 2{nu}}=(9.11{sub -0.22}{sup +0.25}(stat.){+-}0.63(syst.))x10{sup 18} yr. The observed limit on the half-life for neutrinoless double-{beta} decay is found to be T{sub 1/2}{sup 0{nu}}>1.8x10{sup 22} yr at 90% confidence level. This translates into a limit on the effective Majorana neutrino mass of

Published
2009

11. Measurement of the background in the NEMO 3 double beta decay experiment

Author

O.I. Kochetov, Vl.I. Tretyak, Yu. Shitov, F. Mauger, F. Piquemal, V. Egorov, I. Nasteva, P. Novella, J. Martín-Albo, S. Söldner-Rembold, F. Mamedov, J. Baker, G. Broudin-Bay, K. Lang, V. I. Umatov, S. I. Konovalov, E. Chauveau, N. Fatemi-Ghomi, L. Simard, X. Sarazin, A.A. Smolnikov, I. Vanyushin, A. Nachab, Vl. I. Tretyak, Juergen Thomas, V. Vasiliev, V. V. Timkin, S. W. Snow, Ph. Hubert, Igor Nemchenok, S. King, Vit Vorobel, S. Jullian, Ruben Saakyan, F. Nova, V. E. Kovalenko, Y. Lemière, Guillaume Lutter, M. Bongrand, A. Chapon, J. Argyriades, Z. Daraktchieva, A. S. Barabash, A. Freshville, I. Stekl, C. H. Nguyen, A. J. Caffrey, C.S. Sutton, H. Ohsumi, Dominique Durand, V.B. Brudanin, L. Vála, J. S. Ricol, Ts. Vylov, B. Guillon, D. Lalanne, C. Augier, G. Szklarz, R. Arnold, Ch. Marquet, R. L. Flack, J. L. Reyss, M. Kauer, R. B. Pahlka, F. Perrot, Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut Pluridisciplinaire Hubert Curien (IPHC), Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Océan et Interfaces (OCEANIS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), NEMO, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), and Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear and High Energy Physics, congenital, hereditary, and neonatal diseases and abnormalities, Signal region, chemistry.chemical_element, FOS: Physical sciences, Radon, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Nuclear physics, NEMO, Double beta decay, 0103 physical sciences, Neutrino Ettore Majorana Observatory, Nuclear Experiment (nucl-ex), 010306 general physics, skin and connective tissue diseases, Low radioactivity, Instrumentation, Nuclear Experiment, Physics, 010308 nuclear & particles physics, Detector, Power (physics), Background, chemistry
Abstract

In the double beta decay experiment NEMO 3 a precise knowledge of the background in the signal region is of outstanding importance. This article presents the methods used in NEMO 3 to evaluate the backgrounds resulting from most if not all possible origins. It also illustrates the power of the combined tracking-calorimetry technique used in the experiment., The authors would like to thank the Modane Underground Laboratory staff for their technical assistance in running the experiment. Portions of this work were supported by Grants from RFBR (nos. 06-02-16672 and 06-02-72553) and by the Russian Federal Agency for Atomic Energy. We acknowledge support by the Grant Agencies of the Czech Republic (MSM 6840770029, LA305 and LC07050).

Published
2009

12. Measurement of the two neutrino double beta decay half-life of Zr-96 with the NEMO-3 detector

Author

V. G. Egorov, X. Sarazin, F. Piquemal, T. Lamhamdi, A. Basharina-Freshville, A. Nachab, Y. Lemière, Ph. Hubert, Fedor Šimkovic, Chi-Hung Nguyen, Juergen Thomas, Igor Nemchenok, J. Baker, F. Mamedov, A. Chapon, J. Argyriades, D. Lalanne, A. S. Barabash, F. Perrot, Jouni Suhonen, L. Vála, S. Jullian, A. J. Caffrey, N. Fatemi-Ghomi, V. I. Umatov, C. S. Sutton, G. Szklarz, O.I. Kochetov, R. L. Flack, V. B. Brudanin, G. Broudin-Bay, K. Lang, S. Söldner-Rembold, V. I. Tretyak, Yu. Shitov, J. L. Reyss, Guillaume Lutter, S. W. Snow, I. Nasteva, V. Vasiliev, Ch. Marquet, M. Bongrand, S. King, M. Kauer, R. B. Pahlka, F. Nova, P. Novella, J. Martín-Albo, Z. Daraktchieva, A. A. Klimenko, A.A. Smolnikov, R. Saakyan, V. V. Timkin, I. Vanyushin, Ts. Vylov, F. Mauger, B. Guillon, C. Augier, C. Longuemare, J. S. Ricol, L. Simard, H. Ohsumi, Dominique Durand, V. Kovalenko, S. I. Konovalov, E. Chauveau, I. Stekl, Vit Vorobel, R. Arnold, Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Océan et Interfaces (OCEANIS), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), and NEMO

Subjects
Physics, Nuclear and High Energy Physics, Isotope, 010308 nuclear & particles physics, Detector, FOS: Physical sciences, Half-life, Electron, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Nuclear physics, Radioactivity, Angular distribution, Double beta decay, 0103 physical sciences, Nuclear Experiment (nucl-ex), Neutrino, 010306 general physics, Nuclear Experiment, Energy (signal processing)
Abstract

Using 9.4 g of Zr-96 and 1221 days of data from the NEMO-3 detector corresponding to 0.031 kg yr, the obtained 2vbb decay half-life measurement is [2.35 +/- 0.14(stat) +/- 0.16(syst)] x 10^19 yr. Different characteristics of the final state electrons have been studied, such as the energy sum, individual electron energy, and angular distribution. The 2v nuclear matrix element is extracted using the measured 2vbb half-life and is 0.049 +/- 0.002. Constraints on 0vbb decay have also been set., Published in Nucl.Phys.A (10 pages, 10 figures)

Published
2009

13. Limits on different Majoron decay modes of $^{100}$Mo and $^{82}$Se for neutrinoless double beta decays in the NEMO-3 experiment

Author

A.A. Smolnikov, I. Vanyushin, C.S. Sutton, K. Errahmane, C. Jollet, F. Hubert, A.-I. Etienvre, L. Vála, C. Augier, Ts. Vylov, F. Nowacki, Yu. Shitov, V. B. Brudanin, F. Leccia, V.E. Kovalenko, F. Mauger, Ph. Hubert, Vit Vorobel, Jouni Suhonen, A. J. Caffrey, Fedor Šimkovic, G. Szklarz, S. Jullian, O.I. Kochetov, Ch. Marquet, S. I. Konovalov, V. Vasilyev, R. Saakyan, R. Arnold, V. V. Timkin, F. Piquemal, J. Baker, I. Stekl, L. Simard, V. G. Egorov, X. Sarazin, E. Caurier, Juergen Thomas, S. King, Guillaume Lutter, C. Longuemare, J.L. Guyonnet, V. I. Tretyak, J. L. Reyss, H. Ohsumi, V. I. Umatov, D. Lalanne, A. S. Barabash, Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), NEMO, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Centre National de la Recherche Scientifique (CNRS), Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Coupling constant, Nuclear and High Energy Physics, Particle physics, Spectral index, Isotope, 010308 nuclear & particles physics, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Double beta decay, 0103 physical sciences, Underground laboratory, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Beta (velocity), 010306 general physics, Boson, Majoron
Abstract

The NEMO-3 tracking detector is located in the Fr��jus Underground Laboratory. It was designed to study double beta decay in a number of different isotopes. Presented here are the experimental half-life limits on the double beta decay process for the isotopes $^{100}$Mo and $^{82}$Se for different Majoron emission modes and limits on the effective neutrino-Majoron coupling constants. In particular, new limits on "ordinary" Majoron (spectral index 1) decay of $^{100}$Mo ($T_{1/2} > 2.7\cdot10^{22}$ y) and $^{82}$Se ($T_{1/2} > 1.5\cdot10^{22}$ y) have been obtained. Corresponding bounds on the Majoron-neutrino coupling constant are $ < (0.4-1.9) \cdot 10^{-4}$ and $< (0.66-1.7) \cdot 10^{-4}$., 23 pages includind 4 figures, to be published in Nuclear Physics A

Published
2006
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14. Double beta decay of $^{96}$Zr

Author

A. J. Caffrey, Ph. Hubert, F. Hubert, Vl.I. Tretyak, V.E. Kovalenko, F. Mauger, F. Piquemal, F. Laplanche, R. Torres, S. Jullian, A. S. Barabash, O.I. Kochetov, D. Blum, F. Leccia, I. Linck, C. Longuemare, V. G. Egorov, X. Sarazin, Jouni Suhonen, T. Filipova, A. Vareille, E. Caurier, J. Baker, V. B. Brudanin, D. Dassié, Ts. Vylov, Yu. Vasilyev, I. Pilugin, R. Arnold, C. Augier, I. Vanyushin, D. Lalanne, J.L. Guyonnet, J.E. Campagne, J. L. Reyss, V. N. Kornoukhov, H. W. Nicholson, I. Kisel, V. I. Umatov, C. S. Sutton, G. Szklarz, Ch. Marquet, F. Scheibling, V. V. Timkin, Rodolfo Gurriaran, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), NEMO, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Physics, Nuclear and High Energy Physics, Zirconium, 010308 nuclear & particles physics, chemistry.chemical_element, 01 natural sciences, Lower limit, Nuclear physics, Angular distribution, chemistry, Double beta decay, Excited state, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Atomic physics, 010306 general physics, Ground state, Majoron
Abstract

After 10357 h of running the NEMO-2 tracking detector with an isotopically enriched zirconium source (0.084 mol yr of 96Zr), a ββ2ν decay half-life of T1/2=(2.1+0.8(stat)−0.4(stat)±0.2(syst))·1019 y was measured. Limits with a 90% C.L. on the 96Zr half-lives of 1.0·1021 y for ββ0ν decay to the ground state, 3.9·1020 y to the 2+ excited state and 3.5·1020 y for ββ0νχ0 decay with a Majoron (χ0) were obtained. The data also provide direct limits at the 90% C.L. for the 94Zr half-lives. These limits are 1.1·1017 y for ββ2ν decay to the ground state, 1.9·1019 y for ββ0ν decay to the ground state and 2.3·1018 y for ββ0νχ0 decay to ground state.

Published
1999

15. Dark matter sensitivities of the Majorana Demonstrator

Author

Alan Poon, B. H. LaRoque, Masaharu Nomachi, J. A. Detwiler, Eric W. Hoppe, O.I. Kochetov, G. Perumpilly, V. M. Gehman, Brian D. LaFerriere, J. C. Loach, J. Esterline, M. F. Kidd, Vladimir Yumatov, C.-H. Yu, V. B. Brudanin, Kai Vetter, Dongming Mei, V. V. Timkin, Stanley M. Howard, A. R. Young, S. R. Elliott, Ryuta Hazama, Tatsushi Shima, Nicole R. Overman, M. Shirchenko, John L. Orrell, M. Bergevin, M. P. Green, G. Prior, A. S. Barabash, J. F. Wilkerson, Keith Rielage, J. H. Merriman, S. MacMullin, V. G. Egorov, Yuen-Dat Chan, Matthew Busch, Michael G. Marino, K. Gusey, Alexis G. Schubert, J. R. Beene, F. E. Bertrand, C. D. Christofferson, A. L. Hallin, V. E. Guiseppe, P. Finnerty, Chao Zhang, H. Ejiri, M. Boswell, Reynold J. Cooper, J. Strain, M. L. Miller, D. Steele, K. Vorren, J. I. Collar, P. J. Doe, A. Knecht, Keenan Thomas, Yu. Efremenko, R. D. Martin, Henning O. Back, E. Yakushev, M. A. Howe, D. C. Radford, L. E. Leviner, C. Keller, D. G. Phillips, R. G. H. Robertson, K. J. Snavely, N. Fields, Richard T. Kouzes, M. Horton, M. C. Ronquest, L. Mizouni, E. Aguayo, James E. Fast, K. J. Keeter, G. K. Giovanetti, F. M. Fraenkle, R. A. Johnson, S. I. Konovalov, Werner Tornow, I. Vanyushin, F. T. Avignone, R. L. Varner, Reyco Henning, D. C. Combs, and Jonathan D. Leon

Subjects
Physics, History, Particle physics, Physics::Instrumentation and Detectors, Dark matter, Detector, Computer Science Applications, Education, Semiconductor detector, Nuclear physics, MAJORANA, WIMP, Weakly interacting massive particles, Data analysis, High Energy Physics::Experiment, Nuclear Experiment, Event (particle physics)
Abstract

The Majorana Demonstrator is an array of natural and enriched high purity germanium detectors that will search for the neutrinoless double-beta decay of Germanium-76 and perform a search for weakly interacting massive particles with masses below 10 GeV. To reach the background rate goal in the neutrinoless double-beta decay region of interest of 4 counts/keV/t/y, the DEMONSTRATOR will utilize a number of background reduction strategies, including a time-correlated event cut for 68Ge that requires a sub-keV energy threshold. This low energy threshold allows the DEMONSTRATOR to extend its physics reach to include a search for light WIMPs. We will discuss the detector systems and data analysis techniques required to achieve sub-keV thresholds as well as present the projected dark matter sensitivities of the Majorana Demonstrator.

Published
2012

16. Testing the Pauli exclusion principle with the NEMO-2 detector

Author

F. Laplanche, Ts. Vylov, V. B. Brudanin, F. Leccia, J. Baker, V. V. Timkin, V.E. Kovalenko, V. G. Egorov, X. Sarazin, F. Mauger, R. Torres, D. Dassié, A. J. Caffrey, E. Caurier, Ph. Hubert, C. Longuemare, O.I. Kochetov, R. Arnold, Yu. Vasilyev, I. Pilugin, Rodolfo Gurriaran, S. Jullian, T. Filipova, F. Scheibling, I. Vanyushin, F. Hubert, F. Piquemal, C. S. Sutton, Jouni Suhonen, G. Szklarz, C. Augier, D. Blum, Ch. Marquet, A. Vareille, I. Linck, J.L. Guyonnet, J.E. Campagne, J. L. Reyss, V. N. Kornoukhov, H. W. Nicholson, A. S. Barabash, D. Lalanne, I. Kisel, V. I. Umatov, and Vl.I. Tretyak

Subjects
Physics, Nuclear and High Energy Physics, Hadron, Carbon-12, Isotopes of boron, Particle detector, Nuclear physics, symbols.namesake, Pauli exclusion principle, Double beta decay, symbols, Nucleon, Radioactive decay, Nuclear Physics
Abstract

The Pauli Exclusion Principle (PEP) was tested with the NEMO-2 detector. Limits at the 90% C.L. on the violation of PEP for p-shell nucleons in 12C were obtained. Specifically, transitions to the fully occupied 1s1/2-shell yielded a limit of 4.2 · 1024 y for the process with emission of a γ-quantum. Similarly limits of 3.1 · 1024 y for β− and 2.6 · 1024 y for β+ Pauli-forbidden transitions of 12C →12N12B) are reported here.

17. Double-β decay of 82Se

Author

Ph. Hubert, S. Jullian, A. J. Caffrey, V. B. Brudanin, C. Augier, F. Laplanche, E. Caurier, V. Zerkin, O. Purtov, Ts. Vylov, D. Dassié, F. Leccia, R. Arnold, O.I. Kochetov, D. Blum, F. Hubert, D. Lalanne, Yu. Vasilyev, I. Pilugin, P. Mennrath, V. G. Egorov, I. Linck, X. Sarazin, J. Baker, V.I. Tretyak, T. Filipova, A. Vareille, A. S. Barabash, J.L. Guyonnet, J.E. Campagne, J. L. Reyss, V. N. Kornoukhov, H. W. Nicholson, I. Vanyushin, I. Kisel, Jouni Suhonen, F. Scheibling, C. S. Sutton, G. Szklarz, Ch. Marquet, V.E. Kovalenko, F. Mauger, R. Torres, Rodolfo Gurriaran, R. Eschbach, V. V. Timkin, V. I. Umatov, C. Longuemare, and F. Piquemal

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Isotopes of selenium, Double beta decay, Excited state, Half-life, Neutrino, Beta decay, Radioactive decay, Majoron
Abstract

The NEMO-2 tracking detector located in the Frejus Underground Laboratory was designed as a prototype of the NEMO-3 detector to study neutrinoless (Oν) and two neutrino (2ν) double-beta decay (ββ) physics. After 10357 h of running with an isotopically enriched selenium source (2.17 mol yr of 82Se) a ββ2ν decay half-life of T 1 2 = (0.83 ± 0.10( stat ) ± 0.07 ( syst )) × 10 20 yr was measured. Limits with a 90% C.L. on the 82Se half-lives of 9.5 × 1021 yr for ββ0ν decay to the ground state, 2.8 × 1021 yr to the (2+) excited state and 2.4 × 1021 yr for ββ0νχ0 decay with a Majoron (χ0) were also obtained.

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