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101. Application of PbWO4 crystal scintillators in experiment to search for decay of 116Cd

Author

A.S. Lobko, Mikhail Korzhik, A.Sh. Georgadze, E. N. Pirogov, A.G. Fedorov, D.V. Poda, Ts. Vylov, S.S. Nagorny, V. V. Kobychev, Vl.I. Tretyak, I. M. Vyshnevskyi, B.V. Grinyov, A. S. Nikolaiko, Volodymyr D. Ryzhikov, L.L. Nagornaya, S.S. Yurchenko, Oleg V. Missevitch, F.A. Danevich, V.B. Brudanin, and B. N. Kropivyansky

Subjects
Physics, Nuclear and High Energy Physics, Scintillation, Analytical chemistry, chemistry.chemical_element, Scintillator, Copper, Beta decay, Crystal, Nuclear physics, chemistry.chemical_compound, chemistry, Double beta decay, Electromagnetic shielding, Cadmium tungstate, Instrumentation
Abstract

Lead tungstate (PbWO4) crystal scintillators are discussed as an active shield and light guides in Cd-116 double-beta decay experiment with Cadmium tungstate (CdWO4) scintillators. Scintillation properties and radioactive contamination of PbWO4 scintillators were investigated. Energy resolution of CdWO4 detector, coupled to PbWO4 light guide, was tested. Efficiency of PbWO4-based active shield to suppress background from the internal contamination of PbWO4 crystals, as well as possible contribution from radioactivity of copper shield and phototubes were calculated. Using of lead tungstate crystal scintillators as high-efficiency 4 pi active shield could allow to build sensitive 2 beta experiment (T-1/2(0 nu 2 beta) similar to 10(26) yr) to search for 0 nu 2 beta decay of Cd-116 with (CdWO4)-Cd-116 crystal scintillators. (c) 2005 Elsevier B.V. All rights reserved.

Published
2006

102. Scintillation properties and radioactive contamination of CaWO4 crystal scintillators

Author

F.A. Danevich, I.M. Solsky, F. T. Avignone, Yu.G. Zdesenko, Vl.I. Tretyak, S.S. Nagorny, and V.B. Brudanin

Subjects
Physics, Nuclear physics, Crystal, Nuclear and High Energy Physics, Scintillation, Resolution (mass spectrometry), Impurity, Double beta decay, Radioactive contamination, Radiochemistry, Alpha decay, Scintillator, Instrumentation
Abstract

Energy resolution, α / β ratio and the pulse-shape discrimination ability of the CaWO4 crystal scintillators were studied. The radioactive contamination and background of the crystals were measured in the Solotvina Underground Laboratory. Despite a rather high level of radioactive impurities, the background rate of the CaWO4 detector in the energy window of the 48Ca neutrinoless 2 β decay (3.6–5.4 MeV) was reduced to 0.07 counts/(yr keV kg). The indication for α decay of 180W (Phys. Rev. 67 (2003) 014310) was confirmed (the measured half-life is T 1 / 2 = 1 . 0 - 0.3 + 0.7 × 10 18yr).

Published
2005

103. A Statistical Method of Pulse Shape Analysis and Its Application to Nuclear Spectroscopy

Author

N. V. Morozova, V. A. Morozov, and V.B. Brudanin

Subjects
Physics, Microsecond, Spectrum analyzer, Channel (digital image), Picosecond, Personal computer, Nano, Instrumentation, Coincidence, Pulse (physics), Computational physics
Abstract

A method for analyzing the shape of pulses in the nano- and microsecond ranges on the basis of the delayed coincidence method is described. With the time analyzer channel graduated to a picosecond, it is shown that statistical gating of pulses can be performed using a standard 4096-channel analog-to-digital converter and a personal computer. When applied to study decay schemes of radioactive nuclei, this method makes it possible to ascertain transitions that populate and deexcite a short-lived nuclear state if the half-life of this state is comparable to the duration of the pulse supplied for energy analysis.

Published
2004

104. Ion Feedback Afterpulses in ФЭУ-130 and XP2020 Photomultipliers

Author

V. A. Morozov, N. V. Morozova, and V.B. Brudanin

Subjects
Physics, Photomultiplier, Optics, Spectrometer, business.industry, Time distribution, business, Instrumentation, Photocathode, Ion
Abstract

Intensities and time distribution spectra of ion feedback afterpulses were studied as a function of the potential differences between the photocathode and first dynodes in ФЭУ-130 photomultipliers with the aim of using this type of photomultiplier in autocorrelation delayed-coincidence spectrometers. The intensities and amplitudes of the afterpulses in an ФЭУ-130 are found to be substantially larger than those in XP2020 photomultipliers, which are usually used in delayed-coincidence spectrometers.

Published
2004

105. Beta-neutrino angular correlation in the decay of 14O

Author

Jules Deutsch, Ch. Briançon, Vit Vorobel, V.B. Brudanin, Sh. Zaparov, Yu. Shitov, I. Yutlandov, Natalis Severijns, C Vieu, V. Egorov, René Prieels, and Ts. Vylov

Subjects
Physics, Nuclear and High Energy Physics, Positron, Correlation coefficient, Coincident, Hadron, Nuclear fusion, Atomic physics, Neutrino, Beta decay, Fermi Gamma-ray Space Telescope
Abstract

The positrons and coincident gamma-rays following the pure Fermi 0(+) --> 0(+) branch of beta(+)-decay in 140 were measured. The Doppler shift of the gamma-quantum observed is sensitive to the beta-neutrino correlation coefficient, which is unity (alpha = 1) in the absence of scalar coupling. The interatomic interaction of recoiling daughters was noticed, which has prevented to obtain an improved result for scalar coupling despite of the excellent statistical accuracy of the measurement. At the same time, it was shown that the method described can be used as a very sensitive and flexible tool to probe the interatomic interactions in matter at the hundred eV energy level. Perspectives in this direction as well as the future angular-correlation experiments aimed to search for scalar coupling in beta-decay are discussed.

Published
2003

106. Doppler-broadening of gamma rays following muon capture: search for scalar coupling

Author

V.B. Brudanin, T. Filipova, Teemu Siiskonen, Yu. Shitov, Jouni Suhonen, C. Petitjean, René Prieels, V. Wiaux, I. Yutlandov, Sh. Zaparov, V. Egorov, Ts. Vylov, Ch. Briançon, Jules Deutsch, Lorgeril, Jocelyne, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), and 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)

Subjects
Nuclear reaction, Physics, Nuclear and High Energy Physics, Muon, Correlation coefficient, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], 010308 nuclear & particles physics, Gamma ray, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Impulse (physics), 01 natural sciences, Muon capture, Nuclear physics, Pseudoscalar, 0103 physical sciences, 010306 general physics, Doppler broadening
Abstract

A precision measurement of the 277 keV γ ray produced by capturing muons in gaseous oxygen was performed using high-resolution HPGe detectors. The Doppler-broadened shape of this line is sensitive to the possible admixture into muon capture of genuine scalar interaction. This experiment complements, in the muon sector, in principle, similar ones undertaken recently in nuclear β decay. Using a procedure discussed in earlier papers, a fit to the experimental line-shape allowed us to obtain for the recoil–gamma correlation coefficient the value of a 1 2 =0.096±0.041 (95% CL). The available evaluations of the contributing nuclear matrix elements, performed in the impulse approximation in the absence of scalar interaction, produce correlation coefficients in disagreement with our result. These evaluations are independent of the induced pseudoscalar coupling and so of the validity of the PCAC hypothesis, but their reliability and model dependence remain to be investigated.

Published
2002

107. First results from GERDA Phase II

Author

Manfred Lindner, V. I. Gurentsov, Cinzia Sada, Giovanni Benato, E. Bellotti, V. V. Kazalov, D. Borowicz, Bayarto Lubsandorzhiev, O. Selivanenko, E. Doroshkevich, J. Hakenmüller, Christian Bauer, C. Macolino, J. Janicskó Csáthy, A. Lubashevskiy, L. B. Bezrukov, E. Shevchik, K. T. Knöpfle, R. Mingazheva, R. Brugnera, V. V. Kuzminov, Marcin Wójcik, Matteo Agostini, P. Grabmayr, Werner Hofmann, J. Jochum, L. Stanco, B. Schwingenheuer, Allen Caldwell, O.I. Kochetov, V. Wagner, I. Zhitnikov, A. Wegmann, Alessandro Bettini, B. Lehnert, Igor Nemchenok, A. Kirsch, V.B. Brudanin, G. Zuzel, D. Palioselitis, V. N. Kornoukhov, M. Allardt, Stefano Riboldi, W. Maneschg, Hardy Simgen, E. A. Yanovich, S. T. Belyaev, V. G. Egorov, M. Balata, C. Schmitt, E. Medinaceli, K. Pelczar, K. Panas, A. M. Gangapshev, T. Wester, A.A. Smolnikov, A. Lazzaro, Bela Majorovits, L. V. Inzhechik, P. Moseev, C. Cattadori, Kai Zuber, Guillaume Lutter, A. M. Bakalyarov, L. Vanhoefer, Luciano Pandola, M. Misiaszek, A. A. Klimenko, C. Wiesinger, K. von Sturm, Thomas Kihm, M. Heisel, N. Rumyantseva, M. Shirchenko, Laura Baudis, A. Kish, E. V. Demidova, I. R. Barabanov, A. Domula, F. Salamida, C. Gooch, S. V. Zhukov, A.-K. Schütz, R. Falkenstein, A. Hegai, M. Junker, V. D'Andrea, Jochen Schreiner, N. Di Marco, T. Bode, S. Belogurov, V. I. Lebedev, M. Salathe, Ivano Lippi, D. R. Zinatulina, H. Y. Liao, A. V. Veresnikova, Mikael Hult, A. Chernogorov, S. Hemmer, I. V. Kirpichnikov, M. Miloradovic, B. Schneider, R. Kneißl, K. N. Gusev, Stefan Schönert, Matthias Laubenstein, A. A. Vasenko, N. Frodyma, Oliver Schulz, Alberto Pullia, and A. Garfagnini

Subjects
Nuclear physics, Physics, Semileptonic decay, History, Phase (matter), Nuclear Matrix, Beta Decay, Bolometers, Beta Decay, Bolometers, Nuclear Matrix, Computer Science Applications, Education
Published
2017

108. Active background suppression with the liquid argon scintillation veto of GERDA Phase II

Author

O.I. Kochetov, Oliver Schulz, L. B. Bezrukov, M. Salathe, K. Panas, A. M. Bakalyarov, E. V. Demidova, A. Chernogorov, A. Wegmann, Alberto Pullia, Igor Nemchenok, Christian Bauer, Bela Majorovits, K. Pelczar, S. T. Belyaev, A. Kish, A. Lubashevskiy, D. Palioselitis, D. R. Zinatulina, A. Domula, A. M. Gangapshev, A. Garfagnini, I. R. Barabanov, Guillaume Lutter, C. Gooch, S. V. Zhukov, I. V. Kirpichnikov, B. Lehnert, A.-K. Schütz, Th. Kihm, A. Hegai, Mikael Hult, V. G. Egorov, M. Balata, C. Schmitt, N. Di Marco, M. Allardt, C. Cattadori, L. Stanco, J. Janicskó Csáthy, P. Moseev, L. V. Inzhechik, Luciano Pandola, Ivano Lippi, S. Hemmer, M. Miloradovic, K. N. Gusev, L. Vanhoefer, A. A. Klimenko, V.B. Brudanin, V.N. Kornoukhov, M. Heisel, C. Macolino, Hardy Simgen, R. Falkenstein, Jochen Schreiner, C. Wiesinger, K. T. Knöpfle, N. Rumyantseva, S. Belogurov, R. Brugnera, Manfred Lindner, M. Shirchenko, Matthias Laubenstein, E. Bellotti, E. Doroshkevich, V. V. Kuzminov, B. Schneider, Stefan Schönert, N. Frodyma, M. Junker, Matteo Agostini, V. Wagner, I. Zhitnikov, Laura Baudis, A. V. Veresnikova, O. Selivanenko, Alessandro Bettini, V. I. Lebedev, R. Mingazheva, Cinzia Sada, Marcin Wójcik, P. Grabmayr, B. Schwingenheuer, E. Medinaceli, T. Bode, J. Jochum, H. Y. Liao, Giovanni Benato, V. Kazalov, Stefano Riboldi, M. Misiaszek, V. I. Gurentsov, Bayarto Lubsandorzhiev, E. Shevzik, R. Kneißl, A. Kirsch, W. Maneschg, E. A. Yanovich, V. D'Andrea, A. A. Vasenko, Allen Caldwell, K. von Sturm, Werner Hofmann, D. Borowicz, J. Hakenmüller, T. Wester, A.A. Smolnikov, A. Lazzaro, Kai Zuber, G. Zuzel, and F. Salamida

Subjects
Physics, History, Scintillation, Argon, 010308 nuclear & particles physics, Veto, chemistry.chemical_element, 01 natural sciences, Particle detector, Computer Science Applications, Education, Semiconductor detector, Nuclear physics, chemistry, Impurity, Phase (matter), 0103 physical sciences, Scintillation counter, DETECTORS, 010306 general physics
Published
2017

109. Acoustic Search for High Energy Neutrinos in Lake Baikal: Status and Perspectives

Author

A.V. Avrorin, V.F. Kulepov, B.A. Shaybonov, E. A. Osipova, A. N. Dyachok, A. A. Doroshenko, Zh.-A.M. Dzhilkibaev, V.I. Ljashuk, K.V. Golubkov, Mark Shelepov, A.V. Shkurihin, E.N. Pliskovsky, B.A. Tarashansky, A.A. Smagina, I. A. Belolaptikov, Konstantin Kebkal, A.V. Kozhin, Aleksandr Gafarov, D.Yu. Bogorodsky, Olga Suvorova, R. R. Mirgazov, A.D. Avrorin, A. V. Zagorodnikov, L. V. Pankov, G.V. Domogatsky, V.A. Tabolenko, M.B. Milenin, I. A. Danilchenko, V.B. Brudanin, O. N. Gaponenko, Evgenii V Rjabov, Valery Zurbanov, A. I. Panfilov, O.G. Kebkal, M.I. Rozanov, T. I. Gress, A.V. Korobchenko, V. Yu. Rubtzov, N. M. Budnev, V. M. Aynutdinov, Sergey Yakovlev, Z. Honz, D.A. Kuleshov, F.K. Koshel, R. Bannasch, S.V. Fialkovsky, A.A. Sheifler, K.V. Konischev, A.P. Koshechkin, and A. A. Perevalov

Subjects
Physics, High energy, COSMIC cancer database, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, QC1-999, Astrophysics::High Energy Astrophysical Phenomena, Neutrino telescope, Ambient noise level, Astrophysics::Instrumentation and Methods for Astrophysics, 01 natural sciences, 0103 physical sciences, High Energy Physics::Experiment, Neutrino, 010306 general physics, Remote sensing
Abstract

We report theoretical and experimental results of on-going feasibility studies to detect cosmic neutrinos acoustically in Lake Baikal. In order to examine ambient noise conditions and to develop re- spective pulse detection techniques a prototype device was created. The device is operating at a depth of 150 m at the site of the Baikal Neutrino Telescope and is capable to detect and classify acoustic signals with different shapes, as well as signals from neutrino- induced showers.

Published
2017

110. Search for neutrinoless double-beta decay ofMo100with the NEMO-3 detector

Author

C. Hugon, I. Vanushin, Pavel P. Povinec, E. Rukhadze, V. Egorov, A.J. Caffrey, F. Nova, Karol Lang, X. Sarazin, B. Morgan, A. Smetana, D. Waters, Guillaume Lutter, Catherine Marquet, C. L. Riddle, A. Remoto, P. Loaiza, C. Augier, F. Piquemal, V.I. Tretyak, D. Lalanne, D. Durand, Juergen Thomas, A. Basharina-Freshville, J. Busto, R. Saakyan, J. Mott, A. S. Barabash, Y. Lemière, V. I. Umatov, J. J. Evans, A.A. Smolnikov, A. A. Klimenko, L. Simard, Fedor Šimkovic, Hector Gomez, V.B. Brudanin, R. Hodák, J. L. Reyss, Masaharu Nomachi, Igor Nemchenok, C. Cerna, S. Blot, Z. J. Liptak, A. Chapon, R. B. Pahlka, Ph. Hubert, P. Guzowski, D. Duchesneau, S. Jullian, C.S. Sutton, F. Nowacki, Karel Smolek, X. Garrido, B. Soulé, R. Arnold, Jouni Suhonen, R. L. Flack, G. Eurin, V. V. Timkin, A. Žukauskas, F. Mauger, J. Baker, V. Kovalenko, B. Guillon, S. I. Konovalov, Yu. Shitov, O.I. Kochetov, C. Vilela, F. Perrot, B. Richards, S. Torre, F. Mamedov, G. Szklarz, Y. A. Ramachers, S. Söldner-Rembold, M. Bongrand, S. Blondel, Vit Vorobel, E. Chauveau, I. Stekl, Vl.I. Tretyak, and H. Ohsumi

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron, 01 natural sciences, Beta decay, Lepton number, Nuclear physics, MAJORANA, Double beta decay, 0103 physical sciences, Beta (velocity), Neutrino, 010306 general physics, Energy (signal processing)
Abstract

We report the results of a search for the neutrinoless double-$\beta$ decay (0$\nu\beta\beta$) of $^{100}$Mo, using the NEMO-3 detector to reconstruct the full topology of the final state events. With an exposure of 34.7 kg.y, no evidence for the 0$\nu\beta\beta$ signal has been found, yielding a limit for the light Majorana neutrino mass mechanism of $T_{1/2}(0\nu\beta\beta)>1.1 \times 10^{24}$ years (90% C.L.) once both statistical and systematic uncertainties are taken into account. Depending on the Nuclear Matrix Elements this corresponds to an upper limit on the Majorana effective neutrino mass of $ < 0.3-0.8$ eV (90% C.L.). Constraints on other lepton number violating mechanisms of 0$\nu\beta\beta$ decays are also given. Searching for high-energy double electron events in all suitable sources of the detector, no event in the energy region [3.2-10] MeV is observed for an exposure of 47 kg.y.

Published
2014

111. Investigation of double beta decay of 100Mo to excited states of 100Ru

Author

Frédéric Nowacki, C. Cerna, Pavel P. Povinec, J. Mott, Karel Smolek, Ph. Hubert, S. Blondel, O.I. Kochetov, C. Vilela, A. Žukauskas, B. Soulé, Vl.I. Tretyak, Fedor Šimkovic, C.S. Sutton, S. Jullian, J. J. Evans, V.B. Brudanin, L. Dragounová, Masaharu Nomachi, H. Gómez, V. Egorov, G. Eurin, A.A. Smolnikov, I. Stekl, Igor Nemchenok, A.J. Caffrey, Vit Vorobel, E. Chauveau, A. A. Klimenko, R. Hodák, S. Blot, V. I. Umatov, A. Smetana, R. Arnold, P. Guzowski, V. Kovalenko, Y. Lemière, R. Saakyan, F. Perrot, C. Augier, A. Chapon, S. I. Konovalov, X. Garrido, J. L. Reyss, P. Čermák, V. V. Timkin, S. Söldner-Rembold, R. B. Pahlka, A. S. Barabash, D. Duchesneau, M. Bongrand, Guillaume Lutter, J. Hůlka, Z. J. Liptak, Catherine Marquet, F. Nova, Karol Lang, E. Rukhadze, F. Mauger, B. Morgan, V.I. Tretyak, C. L. Riddle, A. Remoto, P. Loaiza, H. Ohsumi, Dominique Durand, A. Basharina-Freshville, Jouni Suhonen, D. Lalanne, Yu. Shitov, Juergen Thomas, G. Szklarz, L. Simard, F. Piquemal, Y. A. Ramachers, B. Richards, S. Torre, F. Mamedov, C. Hugon, X. Sarazin, D. Waters, G. Warot, N.I. Rukhadze, R. L. Flack, J. Busto, B. Guillon, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-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 de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Neutrino et Faibles Radioactivités (NEMO), 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)-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 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), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), 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 Souterrain de Modane (LSM - UMR 6417), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), 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-3, Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), 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)-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), 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), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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 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)

Subjects
Physics, Nuclear and High Energy Physics, Decay scheme, ta114, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], External source, 7. Clean energy, 3. Good health, Nuclear physics, Excited state, Excited nucleus, Double beta decay, Nuclear Experiment (nucl-ex), Atomic physics, Hpge detector, Nuclear Experiment
Abstract

Double beta decay of $^{100}$Mo to the excited states of daughter nuclei has been studied using a 600 cm$^3$ low-background HPGe detector and an external source consisting of 2588 g of 97.5% enriched metallic $^{100}$Mo, which was formerly inside the NEMO-3 detector and used for the NEMO-3 measurements of $^{100}$Mo. The half-life for the two-neutrino double beta decay of $^{100}$Mo to the excited 0$^+_1$ state in $^{100}$Ru is measured to be $T_{1/2}=[7.5 \pm{0.6}(stat) \pm {0.6}(syst)]\cdot 10^{20}$ yr. For other $(0\nu + 2\nu)$ transitions to the 2$^+_1$, 2$^+_2$, 0$^+_2$, 2$^+_3$ and 0$^+_3$ levels in $^{100}$Ru, limits are obtained at the level of $\sim (0.25-1.1)\cdot 10^{22}$ yr., Comment: 19 pages, 4 figures. arXiv admin note: text overlap with arXiv:0904.1924

Published
2014

112. DANSS: Detector of the reactor AntiNeutrino based on Solid Scintillator

Author

J. Vlasek, A. S. Kobyakin, N. Skrobova, Mikhail Danilov, M. Shirchenko, Yu. Shitov, D. Medvedev, A. A. Kuznetsov, E. Tarkovsky, Z. Hons, Ye. Shevchik, D. N. Svirida, V. Egorov, V. Rusinov, I. V. Machikhiliyan, N. Rumyantseva, D. Ponomarev, D. R. Zinatulina, V. A. Belov, I. Tikhomirov, A.V. Salamatin, D.V. Filosofov, M. Fomina, A.G. Olshevsky, S. Kazartsev, I. Rozova, I. G. Alekseev, V. M. Nesterov, V.B. Brudanin, I. Zhitnikov, and A. Starostin

Subjects
Physics, Spectrometer, 010308 nuclear & particles physics, Nuclear engineering, Detector, Scintillator, 01 natural sciences, Core (optical fiber), Nuclear reactor core, 0103 physical sciences, Sensitivity (control systems), Neutrino, 010306 general physics, Neutrino oscillation, Instrumentation, Mathematical Physics
Abstract

The DANSS project is aimed at creating a relatively compact neutrino spectrometer which does not contain any flammable or other dangerous liquids and may therefore be located very close to the core of an industrial power reactor. As a result, it is expected that high neutrino flux would provide about 15,000 IBD interactions per day in the detector with a sensitive volume of 1 m3. High segmentation of the plastic scintillator will allow to suppress a background down to a ~1% level. Numerous tests performed with a simplified pilot prototype DANSSino under a 3 GWth reactor of the Kalinin NPP have demonstrated operability of the chosen design. The DANSS detector surrounded with a composite shield is movable by means of a special lifting gear, varying the distance to the reactor core in a range from 10 m to 12 m. Due to this feature, it could be used not only for the reactor monitoring, but also for fundamental research including short-range neutrino oscillations to the sterile state. Supposing one-year measurement, the sensitivity to the oscillation parameters is expected to reach a level of sin2(2θnew) ~ 5 × 10−3 with Δ m2 ⊂ (0.02–5.0) eV2.

Published
2016

113. The spin-neutrino correlation revisited in 28Si muon capture: a new determination of the induced pseudoscalar coupling gP/gA

Author

A. Pasternak, V. Lobanov, A.V. Salamatin, T. Filipova, V.B. Brudanin, M. Kudoyarov, Yu. Shitov, I. Yutlandov, T. Mamedov, Ts. Vylov, J. Deutsch, Sh. Zaparov, René Prieels, V. Egorov, and Ch. Briançon

Subjects
Nuclear physics, Physics, Pseudoscalar, Nuclear and High Energy Physics, Muon, Neutrino, Muon spin spectroscopy, Atomic physics, Nucleon, Coupling (probability), Muon capture, Spin-½
Abstract

We describe an improved follow-up of our previous spin-neutrino correlation experiment, where the 1229 and 2171 keV gamma-rays emitted after the 28 Si( μ , ν ) 28 Al(1 + , 2202 keV) reaction were observed by high-resolution HPGe detectors at different angles with respect to the muon spin. In the experiment described here, a magnetic field was used both to select events according to the spin-gamma angle and to measure the residual muon polarization by the muSR method. We further increase the precision of our result making use of new experimental and theoretical information. We obtain for the parameter x ≡ M (2)/ M (−1) the value of x =0.239±0.029, which can be compared to our previous result (Brudanin et al., Nucl. Phys. A 587 (1995) 577) x =0.254±0.034 and to the value x =0.315±0.080 obtained recently at TRIUMF with a different technique. The coupling-constant ratio g P / g A was deduced from the mean value x =0.247±0.027. Using renormalized transition operators calculated recently, we obtained for g P / g A the solution range of −1.0 to +1.3 to be compared to the value of 7 predicted by PCAC for the free nucleon. This result confirms the strong quenching of g P / g A reported earlier.

Published
2000

114. A Segmented, Enriched N-type Germanium Detector for Neutrinoless Double Beta-Decay Experiments

Author

Albert Young, S.F. Mikhailov, M. F. Kidd, A. S. Barabash, Valdimir Umatov, T. A. Underwood, V. Egorov, K. T. Lesko, S. R. Elliott, V. M. Gehman, J.H. Reeves, Jingyi Li, Ying Wu, Viatcheslav Sandukovsky, D. C. Radford, L. De Braeckeleer, Todd W. Hossbach, Craig E. Aalseth, S. I. Konovalov, M. Boswell, Harry S. Miley, J. Kephart, Henning O. Back, Yuen-Dat Chan, L. E. Leviner, V.B. Brudanin, Dongming Mei, F. T. Avignone, M. W. Ahmed, and Werner Tornow

Subjects
Cryostat, Physics, Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Detector, Resolution (electron density), FOS: Physical sciences, chemistry.chemical_element, Germanium, Instrumentation and Detectors (physics.ins-det), Semiconductor detector, Nuclear physics, Full width at half maximum, MAJORANA, chemistry, Double beta decay, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Instrumentation, Nuclear Experiment
Abstract

We present data characterizing the performance of the first segmented, N-type Ge detector, isotopically enriched to 85% $^{76}$Ge. This detector, based on the Ortec PT6x2 design and referred to as SEGA (Segmented, Enriched Germanium Assembly), was developed as a possible prototype for neutrinoless double beta-decay measurements by the {\sc Majorana} collaboration. We present some of the general characteristics (including bias potential, efficiency, leakage current, and integral cross-talk) for this detector in its temporary cryostat. We also present an analysis of the resolution of the detector, and demonstrate that for all but two segments there is at least one channel that reaches the {\sc Majorana} resolution goal below 4 keV FWHM at 2039 keV, and all channels are below 4.5 keV FWHM.

Published
2013

115. Registration of reactor neutrinos with the highly segmented plastic scintillator detector DANSSino

Author

V.B. Brudanin, A. S. Kobyakin, V. A. Belov, I. Zhitnikov, M. Danilov, V. Egorov, V. Rusinov, M. Fomina, A. Starostin, Yu. Shitov, and M. Shirchenko

Subjects
Physics, Operability, Physics - Instrumentation and Detectors, Nuclear engineering, Detector, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Scintillator, High Energy Physics - Experiment, Core (optical fiber), High Energy Physics - Experiment (hep-ex), Neutrino detector, Neutrino, Nuclear power reactor, Instrumentation, Mathematical Physics
Abstract

DANSSino is a simplified pilot version of a solid-state detector of reactor antineutrino (it is being created within the DANSS project and will be installed close to an industrial nuclear power reactor). Numerous tests performed under a 3 GW(th) reactor of the Kalinin NPP at a distance of 11 m from the core demonstrate operability of the chosen design and reveal the main sources of the background. In spite of its small size (20x20x100 ccm), the pilot detector turned out to be quite sensitive to reactor neutrinos, detecting about 70 IBD events per day with the signal-to-background ratio about unity., 10 pages, 6 figures, 2 tables

Published
2013

116. CdWO4 crystal scintillators from enriched isotopes for double beta decay experiments

Author

Ya.V. Vasiliev, V. I. Umatov, V.B. Brudanin, S.I. Konovalov, Stefano Nisi, D.V. Poda, V.I. Tretyak, A. P. Shcherban, A. S. Nikolaiko, V.N. Shlegel, E.N. Galashov, F. Cappella, F.A. Danevich, G. P. Kovtun, P. Belli, Matthias Laubenstein, V. Caracciolo, V.D. Virich, D. M. Chernyak, V. V. Kobychev, R. Cerulli, R.B. Podviyanuk, A. S. Barabash, A.L. Mikhlin, A.E. Dossovitskiy, A. Incicchitti, S. d'Angelo, R. Bernabei, V.M. Mokina, D. A. Solopikhin, R. S. Boiko, V.Ya. Degoda, S. Castellano, M. L. Di Vacri, and O.G. Polischuk

Subjects
Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Physics::Medical Physics, chemistry.chemical_element, radiopure scintillator, enriched material, double beta decay, FOS: Physical sciences, Scintillator, Settore FIS/04 - Fisica Nucleare e Subnucleare, Physics::Geophysics, chemistry.chemical_compound, Double beta decay, Cadmium tungstate, Nuclear Experiment (nucl-ex), Nuclear Experiment, Instrumentation, Physics, Cadmium, Scintillation, Radiation, Isotope, Radiochemistry, Settore FIS/01 - Fisica Sperimentale, Instrumentation and Detectors (physics.ins-det), chemistry, High Energy Physics::Experiment
Abstract

Cadmium tungstate crystal scintillators enriched in 106Cd and 116Cd were developed. The produced scintillators exhibit good optical and scintillation properties, and a low level of radioactive contamination. Experiments to search for double beta decay of 106Cd and 116Cd are in progress at the Gran Sasso National Laboratories of the INFN (Italy). Prospects to further improve the radiopurity of the detectors by recrystallization are discussed., Comment: 9 pages, 1 figure (4 eps-figs), 1 table. Accepted for publication in Radiation Measurements as a Proceedings of the 8th International Conference on Luminescent Detectors and Transformers of Ionizing Radiation (LUMDETR 2012), September 09-14, 2012, Halle (Saale), Germany

Published
2013
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117. Status and perspectives of the BAIKAL-GVD project

Author

V.F. Kulepov, K.V. Golubkov, I. A. Belolaptikov, A.P. Koshechkin, A.A. Smagina, Konstantin Kebkal, A.V. Avrorin, I. A. Danilchenko, O. N. Gaponenko, R. R. Mirgazov, Evgenii V Rjabov, A.D. Avrorin, K.V. Konischev, G.V. Domogatsky, N. M. Budnev, E. A. Osipova, A.V. Korobchenko, E. N. Konstantinov, A. A. Doroshenko, V.M. Aynutdinov, Sergey Yakovlev, Zh.-A.M. Dzhilkibaev, Aleksandr Gafarov, D.Yu. Bogorodsky, A. I. Panfilov, Z. Honz, T. I. Gress, A. V. Zagorodnikov, R. Bannash, A.A. Sheifler, O.G. Kebkal, S.V. Fialkovsky, M.I. Rozanov, V.B. Brudanin, A.V. Skurihin, B.A. Tarashansky, E.N. Pliskovsky, V. Yu. Rubtzov, V. A. Zhukov, V.I. Ljashuk, V.A. Tabolenko, D.A. Kuleshov, Valery Zurbanov, A. A. Perevalov, F.K. Koshel, M.B. Milenin, A.V. Kozhin, Olga Suvorova, L. V. Pankov, B.A. Shaybonov, and A. N. Dyachok

Subjects
Physics, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, QC1-999, Astrophysics::High Energy Astrophysical Phenomena, Neutrino telescope, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astrophysics, 01 natural sciences, law.invention, Telescope, law, Software deployment, Functionally independent, 0103 physical sciences, Cluster (physics), Neutrino, 010306 general physics
Abstract

The neutrino telescope Baikal-GVD in Lake Baikal will be a research infrastructure aimed mainly at studying astrophysical neutrino fluxes. The telescope will consist of clusters of strings – functionally independent sub-arrays. The deployment of the first demonstration cluster has been started in April 2013. In 2014 the deployment of the second stage of the demonstration cluster has been performed. We describe the configuration and design of the first GVD cluster and review the current status of cluster deployment in Lake Baikal.

Published
2016

118. The optical module of Baikal-GVD

Author

K.V. Golubkov, A.A. Smagina, E. A. Osipova, A.V. Avrorin, A.V. Korobchenko, V.F. Kulepov, A.D. Avrorin, T. I. Gress, G.V. Domogatsky, A.V. Skurihin, I. A. Danilchenko, I. A. Belolaptikov, Konstantin Kebkal, B.A. Tarashansky, V.B. Brudanin, A. A. Doroshenko, Zh.-A.M. Dzhilkibaev, M.B. Milenin, Aleksandr Gafarov, R. R. Mirgazov, V. M. Aynutdinov, A. V. Zagorodnikov, O. N. Gaponenko, Valery Zurbanov, N. M. Budnev, Evgenii V Rjabov, Sergey Yakovlev, Z. Honz, D.Yu. Bogorodsky, R. Bannash, D.A. Kuleshov, F.K. Koshel, V.A. Tabolenko, A.A. Sheifler, K.V. Konischev, A.P. Koshechkin, V.I. Ljashuk, S.V. Fialkovsky, V. A. Zhukov, B.A. Shaybonov, A. N. Dyachok, E.N. Pliskovsky, A.V. Kozhin, Olga Suvorova, L. V. Pankov, A. I. Panfilov, O.G. Kebkal, M.I. Rozanov, and Mark Shelepov

Subjects
Nuclear and High Energy Physics, Photomultiplier, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, QC1-999, Astrophysics, 01 natural sciences, String (physics), Particle detector, Optical Module, Data acquisition, Optics, 0103 physical sciences, Calibration, Radiology, Nuclear Medicine and imaging, Electronics, 010306 general physics, Nonlinear Sciences::Pattern Formation and Solitons, 010302 applied physics, Physics, Radiation, 010308 nuclear & particles physics, business.industry, Astrophysics::Instrumentation and Methods for Astrophysics, Modular design, Atomic and Molecular Physics, and Optics, Neutrino detector, Measuring instrument, High Energy Physics::Experiment, business, Sensitivity (electronics)
Abstract

In April 2015, the first cluster of Baikal-GVD was deployed in Lake Baikal and put into operation. It comprises eight strings. Each string consists of 24 optical modules. An optical module is a detection element of Baikal-GVD; it includes a Hamamatsu R7081-100 photomultiplier tube with a high quantum sensitivity. We describe the design of the optical module, the front-end electronics, and the laboratory characterization and calibration.

Published
2016

119. The optical detection unit for Baikal-GVD neutrino telescope

Author

R. Bannash, A. I. Panfilov, A.A. Smagina, O.G. Kebkal, M.I. Rozanov, V.A. Tabolenko, V.I. Ljashuk, K.V. Konischev, B.A. Tarashansky, A.P. Koshechkin, A.A. Sheifler, A. A. Doroshenko, R. R. Mirgazov, A.D. Avrorin, Zh.-A.M. Dzhilkibaev, V.M. Aynutdinov, I. A. Danilchenko, G.V. Domogatsky, E.N. Pliskovsky, V.F. Kulepov, A.V. Avrorin, M.B. Milenin, K.V. Golubkov, Valery Zurbanov, E. N. Konstantinov, Sergey Yakovlev, E. A. Osipova, O. N. Gaponenko, A. A. Perevalov, Z. Honz, A.V. Korobchenko, Evgenii V Rjabov, T. I. Gress, A.V. Skurihin, V. Yu. Rubtzov, I. A. Belolaptikov, Konstantin Kebkal, Aleksandr Gafarov, S.V. Fialkovsky, V. A. Zhukov, V.B. Brudanin, A. V. Zagorodnikov, A.V. Kozhin, Olga Suvorova, L. V. Pankov, B.A. Shaybonov, A. N. Dyachok, D.A. Kuleshov, F.K. Koshel, N. M. Budnev, and D.Yu. Bogorodsky

Subjects
Physics, Physics::Instrumentation and Detectors, business.industry, QC1-999, Astrophysics::High Energy Astrophysical Phenomena, Neutrino telescope, Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics, String (physics), Optics, Section (archaeology), Calibration, business
Abstract

The first stage of the GVD-cluster composed of five strings was deployed in April 2014. Each string consists of two sections with 12 optical modules per section. A section is the basic detection unit of the Baikal neutrino telescope. We will describe the section design, review its basic elements – optical modules, FADC readout units, slow control and calibration systems, and present selected results for section in-situ tests in Lake Baikal.

Published
2016

120. Search for double-βdecay processes in106Cd with the help of a106CdWO4crystal scintillator

Author

V. Caracciolo, V.B. Brudanin, P. Belli, Matthias Laubenstein, A. Incicchitti, V.N. Shlegel, Yu. G. Stenin, R. Cerulli, R.B. Podviyanuk, D.V. Poda, V.V. Kobychev, E.N. Galashov, F. Cappella, V.M. Mokina, R. S. Boiko, F.A. Danevich, D. M. Chernyak, V. I. Tretyak, Ya.V. Vasiliev, S. d'Angelo, O. G. Polischuk, R. Bernabei, and Jouni Suhonen

Subjects
Physics, Crystal, Nuclear physics, Nuclear and High Energy Physics, Particle physics
Abstract

A search for double $\ensuremath{\beta}$ processes in ${}^{106}$Cd was carried out at the Gran Sasso National Laboratories of the INFN (Italy) with the help of a ${}^{106}$CdWO${}_{4}$ crystal scintillator (215 g) enriched in ${}^{106}$Cd up to 66$%$. After 6590 h of data taking, new improved half-life limits on the double $\ensuremath{\beta}$ decay processes in ${}^{106}$Cd were established at the level of ${10}^{19}$--${10}^{21}$ yr; in particular, ${T}_{1/2}^{2\ensuremath{\nu}\ensuremath{\varepsilon}{\ensuremath{\beta}}^{+}}\ensuremath{\geqslant}2.1\ifmmode\times\else\texttimes\fi{}{10}^{20}$ yr, ${T}_{1/2}^{2\ensuremath{\nu}2{\ensuremath{\beta}}^{+}}\ensuremath{\geqslant}4.3\ifmmode\times\else\texttimes\fi{}{10}^{20}$ yr, and ${T}_{1/2}^{0\ensuremath{\nu}2\ensuremath{\varepsilon}}\ensuremath{\geqslant}1.0\ifmmode\times\else\texttimes\fi{}{10}^{21}$ yr. The resonant neutrinoless double-electron captures to the 2718-, 2741-, and 2748-keV excited states of ${}^{106}$Pd are restricted to ${T}_{1/2}^{0\ensuremath{\nu}2K}\ensuremath{\geqslant}4.3\ifmmode\times\else\texttimes\fi{}{10}^{20}$ yr, ${T}_{1/2}^{0\ensuremath{\nu}K{L}_{1}}\ensuremath{\geqslant}9.5\ifmmode\times\else\texttimes\fi{}{10}^{20}$ yr, and ${T}_{1/2}^{0\ensuremath{\nu}K{L}_{3}}\ensuremath{\geqslant}4.3\ifmmode\times\else\texttimes\fi{}{10}^{20}$ yr, respectively (all limits at 90$%$ confidence level). A possible resonant enhancement of the $0\ensuremath{\nu}2\ensuremath{\varepsilon}$ processes is estimated in the framework of the quasiparticle random phase approximation (QRPA) approach. Radioactive contamination of the ${}^{106}$CdWO${}_{4}$ crystal scintillator is reported.

Published
2012

121. Status of the Baikal-GVD project

Author

O. N. Gaponenko, Evgenii V Rjabov, A. V. Zagorodnikov, V.I. Ljashuk, B. A. Tarashchansky, A.V. Avrorin, R. R. Mirgazov, A. I. Panfilov, A. A. Doroshenko, I. A. Belolaptikov, Konstantin Kebkal, A. G. Kebkal, V.A. Poleshuk, Zh.-A.M. Dzhilkibaev, M.I. Rozanov, R. Bannasch, D.A. Kuleshov, F.K. Koshel, V.B. Brudanin, O. G. Grishin, S.V. Fialkovsky, K.V. Golubkov, O. A. Gress, V. A. Zhukov, A. S. Yagunov, V. A. Kozhin, N. M. Budnev, S. P. Mikheev, E.N. Pliskovsky, G.V. Domogatsky, V.F. Kulepov, A. M. Klabukov, I. A. Danilchenko, K. V. Konishchev, M.B. Milenin, T. I. Gress, A. A. Sheifler, D. A. Petukhov, A.V. Korobchenko, A. A. Perevalov, A. V. Shirokov, V.F. Rubtsov, A.P. Koshechkin, E.G. Popova, Valery Zurbanov, L. A. Kuzmichev, A. V. Skurikhin, B.A. Shaybonov, A. N. Dyachok, Ch. Spiering, A. Pakhorukov, Olga Suvorova, E. A. Osipova, A. I. Klimov, L. V. Pankov, A. Pan'kov, V. M. Aynutdinov, and D.Yu. Bogorodsky

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Neutrino detector, Pulse circuits, Detector, Neutrino telescope, ddc:530, Underwater, Instrumentation, Technical design, Underwater acoustic communication, Remote sensing
Abstract

The construction of a km 3 -scale neutrino telescope – the Gigaton Volume Detector (GVD) in Lake Baikal – is the central goal of the Baikal collaboration. During the R&D phase of the GVD project in 2008–2010 years the basic elements of GVD – new optical modules, FADC readout units, underwater communications and trigger systems – have been developed, produced and tested in situ by long-term operating prototype strings in Lake Baikal. The prototyping phase of the GVD project has been started in April 2011 with the installation of a three string array (prototype cluster) which comprises all basic elements and systems of the GVD-telescope in Lake Baikal. We describe configuration and technical design of the GVD, present selected results obtained during 2008–2010 with prototype strings, and describe configuration and design of the 2011 prototype cluster.

Published
2012

122. Searches for neutrinoless resonant double electron captures at LNGS

Author

P. Belli, A. Di Marco, A. Incicchitti, R. Cerulli, S. d'Angelo, A. P. Shcherban, A.V. Tolmachev, D.V. Poda, V.I. Tretyak, R. Bernabei, Matthias Laubenstein, F.A. Danevich, R.B. Podviyanuk, Ya.V. Vasiliev, V. V. Kobychev, S. Nagorny, V.M. Mokina, D. A. Solopikhin, R. S. Boiko, D. M. Chernyak, R.P. Yavetskiy, V.B. Brudanin, Yu. G. Stenin, F. Cappella, G. P. Kovtun, D. Prosperi, E. N. Galashov, V. Caracciolo, O.G. Polischuk, N. G. Kovtun, Stefano Nisi, Jouni Suhonen, M. L. Di Vacri, and V.N. Shlegel

Subjects
Physics, double beta decay, low background physics, History, Range (particle radiation), FOS: Physical sciences, Electron, Scintillator, Computer Science Applications, Education, Semiconductor detector, Settore FIS/04 - Fisica Nucleare e Subnucleare, Crystal, Nuclear physics, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

Several experiments were performed during last years at underground (3600 m w.e.) Laboratori Nazionali del Gran Sasso (LNGS) of the INFN (Italy) to search for resonant 2$\varepsilon0\nu$ captures in 96Ru, 106Cd, 136Ce, 156Dy, 158Dy, 180W, 184Os, 190Pt with the help of HP Ge semiconductor detectors, and ZnWO4 and 106CdWO4 crystal scintillators. No evidence for r-2$\varepsilon0\nu$ decays was found, and only T_{1/2} limits were established in the range of 10^{14}-10^{21} yr., Comment: Proceedings of TAUP 2011 Conference

Published
2012
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123. The Results of Search for the Neutrino Magnetic Moment in GEMMA Experiment

Author

A. S. Starostin, M. Shirchenko, D. Medvedev, V. S. Pogosov, V. Egorov, A. G. Beda, and V.B. Brudanin

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Magnetic moment, Spectrometer, Article Subject, Physics::Instrumentation and Detectors, Solar neutrino, Solar neutrino problem, lcsh:QC1-999, Nuclear physics, Neutrino detector, Nuclear reactor core, High Energy Physics::Experiment, Neutrino, Neutrino oscillation, Nuclear Experiment, lcsh:Physics
Abstract

The result of the neutrino magnetic moment measurement at the Kalinin Nuclear Power Plant (KNPP) with GEMMA spectrometer is presented. The antineutrino-electron scattering is investigated. A high-purity germanium detector with a mass of 1.5 kg placed at a distance of 13.9 m from the 3 GWthreactor core is exposed to the antineutrino flux of2.7×10131/cm2/s. The recoil electron spectra taken in 18134 and 4487 hours for the reactor ON and OFF periods are compared. The upper limit for the neutrino magnetic momentμν×10−11μBat 90% C.L. is derived from the data processing.

Published
2012
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124. Combined limits on WIMPs from the CDMS and EDELWEISS experiments

Author

Jeffrey P. Filippini, S. Henry, K. Eitel, Tarek Saab, P. Pari, M. R. Dragowsky, S. Hervé, E. Olivieri, N. Mirabolfathi, Steven W. Leman, P. Cushman, S. V. Rozov, M. A. Verdier, L. Bergé, R. W. Schnee, Martin E. Huber, Kevin A. McCarthy, D. O. Caldwell, F. DeJongh, A. S. Torrento-Coello, J. Hall, Enectali Figueroa-Feliciano, S. Arrenberg, Laura Baudis, D. Balakishiyeva, S. Fallows, Alain Benoit, P. Coulter, Y. Ricci, P. Wikus, G. Chardin, X. Defay, S. J. Yellin, R. Bunker, J. Domange, Miguel Daal, O. Kamaev, D. A. Bauer, B. Paul, A. Broniatowski, H. N. Nelson, A. Reisetter, Blas Cabrera, Cristián Martínez, S. Liu, P. L. Brink, H. Kluck, B. Censier, Z. Ahmed, W. Rau, M. Kos, V. A. Kudryavtsev, S. Scorza, J. Gascon, S. A. Hertel, G. A. Cox, Bernard Sadoulet, D. Filosofov, Y. Dolgorouki, P. Di Stefano, T. Bruch, Bruno Serfass, J. Gironnet, D. N. Seitz, P. Nadeau, E. Armengaud, R. J. Walker, L. Pattavina, R. Hennings-Yeomans, H. Kraus, M. Tarka, Max Robinson, C. Augier, M. Kiveni, M. Gros, P. Loaiza, F. Charlieux, X. Qiu, A. Phipps, R. W. Ogburn, Sunil Golwala, X. F. Navick, C. N. Bailey, M. De Jesus, D. S. Akerib, J. Fox, J. Blümer, E. Yakushev, A. Juillard, M. Pyle, L. Hsu, Jie Zhang, V. Kozlov, Jodi Cooley, Matthew Fritts, Vuk Mandic, B. Schmidt, V.B. Brudanin, M. Chapellier, L. Vagneron, N. Fourches, S. Marnieros, J. Yoo, David Moore, R. Mahapatra, Donald J. Holmgren, J. Sander, C. Nones, Betty A. Young, K. M. Sundqvist, G. Gerbier, V. Sanglard, S. Semikh, L. Dumoulin, Ahmed, Z, Akerib, D, Armengaud, E, Arrenberg, S, Augier, C, Bailey, C, Balakishiyeva, D, Baudis, L, Bauer, D, Benoit, A, Berge, L, Bluemer, J, Brink, P, Broniatowski, A, Bruch, T, Brudanin, V, Bunker, R, Cabrera, B, Caldwell, D, Censier, B, Chapellier, M, Chardin, G, Charlieux, F, Cooley, J, Coulter, P, Cox, G, Cushman, P, Daal, M, Defay, X, De Jesus, M, Dejongh, F, Di Stefano, P, Dolgorouki, Y, Domange, J, Dumoulin, L, Dragowsky, M, Eitel, K, Fallows, S, Figueroa Feliciano, E, Filippini, J, Filosofov, D, Fourches, N, Fox, J, Fritts, M, Gascon, J, Gerbier, G, Gironnet, J, Golwala, S, Gros, M, Hall, J, Hennings Yeomans, R, Henry, S, Hertel, S, Herve, S, Holmgren, D, Hsu, L, Huber, M, Juillard, A, Kamaev, O, Kiveni, M, Kluck, H, Kos, M, Kozlov, V, Kraus, H, Kudryavtsev, V, Leman, S, Liu, S, Loaiza, P, Mahapatra, R, Mandic, V, Marnieros, S, Martinez, C, Mccarthy, K, Mirabolfathi, N, Moore, D, Nadeau, P, Navick, X, Nelson, H, Nones, C, Ogburn, R, Olivieri, E, Pari, P, Pattavina, L, Paul, B, Phipps, A, Pyle, M, Qiu, X, Rau, W, Reisetter, A, Ricci, Y, Robinson, M, Rozov, S, Saab, T, Sadoulet, B, Sander, J, Sanglard, V, Schmidt, B, Schnee, R, Scorza, S, Seitz, D, Semikh, S, Serfass, B, Sundqvist, K, Tarka, M, Torrento Coello, A, Vagneron, L, Verdier, M, Walker, R, Wikus, P, Yakushev, E, Yellin, S, Yoo, J, Young, B, Zhang, J, 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), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), 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 de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire Souterrain de Modane (LSM - UMR 6417), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut Rayonnement Matière de Saclay (IRAMIS), EDELWEISS, 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), 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 National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])

Subjects
Nuclear and High Energy Physics, Particle physics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Dark Matter, bolometers, germanium detectors, Dark matter, Massive particle, FOS: Physical sciences, Elementary particle, Astrophysics::Cosmology and Extragalactic Astrophysics, EDELWEISS, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), WIMP, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Physics, 010308 nuclear & particles physics, Astrophysics::Instrumentation and Methods for Astrophysics, Fermion, Baryon, Weakly interacting massive particles, High Energy Physics::Experiment, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The CDMS and EDELWEISS collaborations have combined the results of their direct searches for dark matter using cryogenic germanium detectors. The total data set represents 614 kg.d equivalent exposure. A straightforward method of combination was chosen for its simplicity before data were exchanged between experiments. The results are interpreted in terms of limits on spin-independent WIMP-nucleon cross-section. For a WIMP mass of 90 GeV/c^2, where this analysis is most sensitive, a cross-section of 3.3 x 10^{-44} cm^2 is excluded at 90% CL. At higher WIMP masses, the combination improves the individual limits, by a factor 1.6 above 700 GeV/c^2. Alternative methods of combining the data provide stronger constraints for some ranges of WIMP masses and weaker constraints for others., Events, efficiencies, and main limit are available in text format (see README.txt)

Published
2011

125. 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

126. 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

127. Probing New Physics Models of Neutrinoless Double Beta Decay with SuperNEMO

Author

Nobuhiro Ishihara, M. Kauer, Alicia Rodríguez, J. S. Ricol, X. Garrido, R. B. Pahlka, Ruben Saakyan, T. Lamhamdi, R. Vasiliev, C. M. Jackson, Vl. I. Tretyak, C. L. Riddle, Guillaume Lutter, F. Nova, C. Augier, T. Dafni, A. Basharina-Freshville, V.E. Kovalenko, F. Piquemal, Yu. Shitov, I. Nasteva, A. J. Caffrey, F. Mauger, B. Richards, Karol Lang, Y. Tamagawa, Fedor Šimkovic, V. V. Timkin, I. Vanyushin, V. Egorov, Igor Nemchenok, C. S. Sutton, A. Chapon, M. Bongrand, A. Holin, D. Waters, R. Arnold, K. Holy, A. Žukauskas, F. Mamedov, I. Stekl, N. Yahlali, F.J. Iguaz, Ph. Hubert, I. García Irastorza, A. S. Barabash, V. Vorobel, Masaharu Nomachi, O.I. Kochetov, V. I. Umatov, J. Baker, F. Perrot, S. Cebrián, Ch. Marquet, S. Jullian, L. Simard, S. Söldner-Rembold, C. Hugon, J. S. Díaz, J. J. Evans, V.I. Tretyak, R. Flack, Luis M. Serra, J. K. Sedgbeer, C. H. Nguyen, Frank F. Deppisch, K-I. Fushima, H. Ohsumi, Dominique Durand, J. J. Horkley, Haley Louise Gomez, F. Monrabal, X. Sarazin, S. I. Konovalov, A. Nachab, E. Chauveau, Pavel P. Povinec, V.B. Brudanin, Juergen Thomas, V. Vasiliev, G. Luzón, B. Guillon, 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), 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 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), Institute of Theoretical and Experimental Physics [Moscow] (ITEP), National Research Center 'Kurchatov Institute' (NRC KI), 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
Physics, Particle physics, Physics and Astronomy (miscellaneous), Isotope, 010308 nuclear & particles physics, Physics beyond the Standard Model, High Energy Physics::Phenomenology, FOS: Physical sciences, Electron, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, 3. Good health, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology, MAJORANA, High Energy Physics - Phenomenology (hep-ph), [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], Double beta decay, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Neutrino, 010306 general physics, Engineering (miscellaneous)
Abstract

The possibility to probe new physics scenarios of light Majorana neutrino exchange and right-handed currents at the planned next generation neutrinoless double beta decay experiment SuperNEMO is discussed. Its ability to study different isotopes and track the outgoing electrons provides the means to discriminate different underlying mechanisms for the neutrinoless double beta decay by measuring the decay half-life and the electron angular and energy distributions., The authors would like to thank H. Pas, M. Hirsch, E. Lisi, V. Rodin and A. Faessler for useful discussions. We acknowledge support by the Grants Agencies of France, the Czech Republic, RFBR (Russia), STFC (UK), MICINN (Spain), NSF, DOE, and DOD (USA). We acknowledge technical support from the staff of the Modane Underground Laboratory (LSM).

Published
2010

128. 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

129. THE NEW RESULT OF THE NEUTRINO MAGNETIC MOMENT MEASUREMENT IN THE GEMMA EXPERIMENT

Author

M. G. Gavrilov, A. G. Beda, V.B. Brudanin, M. Shirchenko, V. G. Egorov, E. V. Demidova, A. S. Starostin, and Ts. Vylov

Subjects
Nuclear physics, Physics, Particle physics, Nuclear reactor core, Magnetic moment, Spectrometer, Scattering, Flux, Neutrino, Spectral line, Semiconductor detector
Abstract

The first result of the neutrino magnetic moment measurement at the Kalininskaya Nuclear Power Plant (KNPP) with the GEMMAspectrometer is presented. An antineutrino-electron scat tering is investigated. A high-purity germanium detector of 1.5 kg placed 13.9 m away from the 3 GW reactor core is used in the spectrometer. The antineutrino flux is 2.73 � 10 13 � �e/cm 2 /s. The differential method is used to extract the �-e electromagnetic scattering events. The scattered electro n spectra taken in 6200 and 2064 hours for the reactor on and off periods are compared. The upper limit for the neutrino magnetic moment � � < 5.8� 10 11 � B at 90% CL is derived from the data processing.

Published
2009

130. Cd111time-differential perturbed angular correlation study of pressure-induced valence changes inYbAl2

Author

M. Budzynski, O.I. Kochetov, A.I. Velichkov, M. Milanov, G. K. Ryasniy, A. A. Sorokin, V.B. Brudanin, A.V. Salamatin, M. Wiertel, A.V. Tsvyashchenko, L.N. Fomicheva, and B.A. Komissarova

Subjects
Physics, Valence (chemistry), Mössbauer effect, Angular correlation, Pressure increase, Quadrupole, Condensed Matter::Strongly Correlated Electrons, Linear correlation, Atomic physics, Condensed Matter Physics, Spectroscopy, Electric field gradient, Electronic, Optical and Magnetic Materials
Abstract

The quadrupole interaction at $^{111}\mathrm{Cd}$ impurity nuclei in the intermediate-valence compound $\mathrm{Yb}{\mathrm{Al}}_{2}$ has been measured under pressure up to $80\phantom{\rule{0.3em}{0ex}}\mathrm{kbar}$ by the time-differential perturbed angular correlation spectroscopy. It was found that the quadrupole frequency ${\ensuremath{\nu}}_{Q}$ measured on the $^{111}\mathrm{Cd}$ nuclei located at the Al sites in $\mathrm{Yb}{\mathrm{Al}}_{2}$ varies nonlinearly and increases by almost four times with the pressure increase up to $80\phantom{\rule{0.3em}{0ex}}\mathrm{kbar}$. A linear correlation between the mean Yb valence, derived from Yb ${L}_{3}$ OFY-XAS and RXES measurements, and the electric field gradient (the quadrupole frequency ${\ensuremath{\nu}}_{Q}=eQ{V}_{zz}∕h$) has been observed. The quadrupole frequencies on $^{111}\mathrm{Cd}$ in the $\mathrm{Gd}{\mathrm{Al}}_{2}$, $\mathrm{Yb}{\mathrm{Al}}_{3}$, $\mathrm{Tm}{\mathrm{Al}}_{3}$, and $\mathrm{Ca}{\mathrm{Al}}_{2}$ compounds have been also measured. The possibility of determining the valence of Yb in the Yb compounds with $p$ metals from the relation ${\ensuremath{\nu}}_{Q}\mathbf{(}\ensuremath{\upsilon}(P)\mathbf{)}={\ensuremath{\nu}}_{2}+({\ensuremath{\nu}}_{3}\ensuremath{-}{\ensuremath{\nu}}_{2})\ensuremath{\upsilon}(P)$ has been considered.

Published
2007

131. Eureca - The european underground rare event calorimeter array

Author

M. Stern, S. Scholl, G. Nollez, E. Yakushev, F. Pröbst, H. Deschamps, B. Tolhurst, J. Blümer, X-F. Navick, C. Coppi, E. Pantic, L. Dumoulin, F. von Feilitzsch, J. Jochum, W. Potzel, A. Chantelauze, A.A. Smolnikov, G. Gerbier, K. Rottler, J. Gascon, J.-C. Lanfranchi, P. Di Stefano, R. Lemrani, M. Chapellier, S. Ingleby, S. Marnieros, T.O. Niinikoski, F. Schwamm, R. McGowan, A. Juillard, F. Ritter, D. Hauff, F. Petricca, C. Ciemniak, G. Chardin, Philippe Camus, Alain Benoit, M. Fesquet, H. Kraus, I. Bavykina, M. Horn, A. de Lesquen, J. Imber, M. Gros, S. Pfister, M. De Jesus, V.B. Mikhailik, S. Henry, V.B. Brudanin, M. Malek, L. Perevoshchikov, W. Westphal, J. Wolf, V. Sanglard, P. Wikus, C. Isaila, K. Eitel, A. Broniatowski, M. Luca, Masahiro Teshima, A. Lubashevsky, W. Seidel, M. Kimmerle, M. Bauer, C. Goldbach, P. Pari, and G. Burghart

Subjects
Nuclear physics, Physics, European Underground Rare Event Calorimeter Array
Abstract

EURECA (European Underground Rare Event Calorimeter Array) is a new project, searching for dark matter. The collaboration is comprised largely of the present groups of the CRESST and EDELWEISS experiments and several new groups. The aim is to explore scalar cross sections in the - 10 -9-10-10picobarn region with a target mass of up to one tonne. A major advantage of EURECA is the planned use of more that just one target material (multi target experiment for WIMP identification). In preparation for this largescale experiment, RandD for EURECA is provided through the current phases of CRESST and EDELWEISS.

Published
2007

132. Status of the MAJORANA DEMONSTRATOR: A search for neutrinoless double-beta decay

Author

J. MacMullin, B. R. Jasinski, J. Rager, J. F. Wilkerson, Kai Vetter, B. R. White, J. E. Trimble, I. S. Guinn, S. J. Meijer, C. X. Baldenegro-Barrera, A. W. Bradley, M. Buuck, C.M. O'Shaughnessy, C.-H. Yu, B. Shanks, V. E. Guiseppe, Brian D. LaFerriere, A. Galindo-Uribarri, M. Shirchenko, F. T. Avignone, J. Goett, S. Vasilyev, R. L. Varner, Reyco Henning, T. Gilliss, D. Tedeschi, John L. Orrell, N. Abgrall, A. S. Caldwell, Yuen-Dat Chan, Vladimir Yumatov, Richard T. Kouzes, R. D. Martin, D. Byram, M. P. Green, Susanne Mertens, Stanley M. Howard, C. Wiseman, Jonathan D. Leon, Yu. Efremenko, R. G. H. Robertson, E. Romero-Romero, A. S. Barabash, H. Ejiri, M. A. Howe, F. E. Bertrand, W. Xu, C. Cuesta, E. Yakushev, G. K. Giovanetti, A. W. P. Poon, Anne-Marie Suriano, J. A. Detwiler, Eric W. Hoppe, J. Gruszko, K. Vorren, C. D. Christofferson, K. J. Keeter, V.B. Brudanin, S. I. Konovalov, D. C. Radford, S. R. Elliott, I. Zhitnikov, Matthew Busch, Keith Rielage, M. F. Kidd, I. J. Arnquist, and N. Snyder

Subjects
Physics, Nuclear and High Energy Physics, Antiparticle, Particle physics, media_common.quotation_subject, High Energy Physics::Phenomenology, Astronomy and Astrophysics, Fermion, Lepton number, Asymmetry, Atomic and Molecular Physics, and Optics, Nuclear physics, MAJORANA, Double beta decay, High Energy Physics::Experiment, Neutron, Neutrino, media_common
Abstract

If neutrinos are Majorana particles, i.e. fermions that are their own antiparticles, then neutrinoless double-beta (0νββ) decay is possible. In such a process, two neutrons can simultaneously decay into two protons and two electrons without emitting neutrinos. Neutrinos being Majorana particles would explicitly violate lepton number conservation, and might play a role in the matter–antimatter asymmetry in the universe. The MAJORANA DEMONSTRATOR experiment is under construction at the Sanford Underground Research Facility in Lead, SD and will search for the neutrinoless double-beta (0νββ) decay of the 76Ge isotope. The goal of the experiment is to demonstrate that it is possible to achieve a sufficiently low background rate in the 4 keV region of interest (ROI) around the 2039 keV Q-value to justify building a tonne-scale experiment. In this paper, we discuss the physics and design of the MAJORANA DEMONSTRATOR, its approach to achieving ultra-low background and the status of the experiment.

Published
2015

133. First results for the measurement of double-electron capture of $^{106}$Cd in the experiment TGV II

Author

V. G. Egorov, P. Čermák, Petr Beneš, V.B. Brudanin, V. E. Kovalenko, A.V. Salamatin, Ch. Briançon, K. N. Gusev, I. Stekl, A. A. Klimenko, N. I. Rukhadze, A. Kovalík, V. V. Timkin, Ts. Vylov, Fedor Šimkovic, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), and 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)

Subjects
Physics, Spectrometer, 010308 nuclear & particles physics, Electron capture, General Physics and Astronomy, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Nuclear physics, Double beta decay, Excited state, 0103 physical sciences, Underground laboratory, Atomic physics, 010306 general physics
Abstract

Present status of the experiment TGV II which is devoted to the measurement of double-beta decay of 106Cd is given. The low background spectrometer TGV II is installed in the Modane Underground Laboratory and has been running from February 2005 with approx 10 grams of 106Cd enriched at 75%. After an analysis of 3736 hours of experimental data the new improved half-life limit for 2νEC/EC decay of 106Cd (0 g.s. + → 0 g.s. + ) is given as T 1 2/2 > 4.8 × 1019 years (90% CL). The search for 2νEC/EC decay of 106Cd to the excited states of 106Pd allows to determine the limits of the half-lives T 1 2/2 (0 g.s. + → 2 1 + ) > 3.9 × 1019 years (90% CL) and T 1 2/2 (0 g.s. + → 0 1 + ) > 5.8 × 1019 years (90% CL).

Published
2005

134. Possible background reductions in double beta decay experiments

Author

C. S. Sutton, J.L. Guyonnet, H. W. Nicholson, S. Jullian, A.-I. Etienvre, F. Leccia, F. Hubert, J. Baker, Jouni Suhonen, V. Vasilyev, C. Jollet, O.I. Kochetov, A. J. Caffrey, Ph. Hubert, Ts. Vylov, E. Caurier, Catherine Marquet, G. Szklarz, F. Piquemal, I. Vanyushin, V.E. Kovalenko, V.B. Brudanin, F. Mauger, L. Vala, X. Sarazin, O. Bing, C. Augier, V. I. Umatov, A. S. Barabash, Vit Vorobel, V. V. Timkin, L. Simard, R. Arnold, K. Errahmane, I. Stekl, C. Longuemare, Jean-Louis Reyss, D. Lalanne, Yu. Shitov, H. Ohsumi, Vl.I. Tretyak, 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 (UB)-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), 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), 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), 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), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and 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)

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, FOS: Physical sciences, Electron, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Impurity, Double beta decay, 0103 physical sciences, Beta (velocity), Nuclear Experiment (nucl-ex), Atomic physics, 010306 general physics, Nuclear Experiment, Instrumentation
Abstract

The background induced by radioactive impurities of $^{208}\rm Tl$ and $^{214}\rm Bi$ in the source of the double beta experiment NEMO-3 has been investigated. New methods of data analysis which decrease the background from the above mentioned contamination are identified. The techniques can also be applied to other double beta decay experiments capable of measuring independently the energies of the two electrons., 15 pages, 13 figures, accepted in the Nuclear Instruments and Methods A

Published
2003

135. Electric field gradients in MgB$_2$ synthesized at high pressure: $^111$Cd TDPAC study and ab initio calculation

Author

V. M. Shabanov, A. V. Salamatin, Z. Z. Akselrod, O. I. Kochetov, A. I. Velichkov, N. A. Lebedev, E. N. Shirani, V. V. Timkin, A. V. Tsvyashchenko, A.F. Novgorodov, M. V. Magnitskaya, L.N. Fomicheva, A. V. Kuznetsov, A. P. Menushenkov, V.B. Brudanin, N.A. Korolev, and D.V Filossofov

Subjects
Diffraction, Superconductivity, Condensed Matter - Materials Science, Materials science, Condensed Matter - Superconductivity, Ab initio, Materials Science (cond-mat.mtrl-sci), FOS: Physical sciences, General Chemistry, Condensed Matter Physics, Molecular physics, NMR spectra database, Superconductivity (cond-mat.supr-con), Ab initio quantum chemistry methods, Electric field, Quadrupole, Materials Chemistry, Electric field gradient
Abstract

We report the high-pressure synthesis of novel superconductor MgB$_2$ and some related compounds. The superconducting transition temperature of our samples of MgB$_2$ is equal to 36.6 K. The MgB$_2$ lattice parameters determined via X-ray diffraction are in excellent agreement with results of our ab initio calculations. The time-differential perturbed angular correlation (TDPAC) experiments demonstrate a small increase in quadrupole frequency of $^111$Cd probe with decreasing temperature from 293 to 4.2 K. The electric field gradient (EFG) at the B site calculated from first principles is in fair agreement with EFG obtained from $^11$B NMR spectra of MgB$_2$ reported in the literature. It is also very close to EFG found in our $^111$Cd TDPAC measurements, which suggests that the $^111$Cd probe substitutes for boron in the MgB$_2$ lattice., 10 pages, 3 figures

Published
2001

136. Yuriĭ Vladimirovich Gaponov

Author

Yu. V. Linde, S. V. Fomichev, Valery Rubakov, A. N. Sisakian, V. A. Khodel, I. M. Pavlichenkov, A. A. Lushnikov, L. A. Malov, Yu. L. Shitikov, V. N. Tikhonov, O. G. Ryazhskaya, V. G. Neudatchin, N. S. Zelenskaya, I. S. Drovennikov, B. S. Ishkhanov, Yu. M. Tchuvil’sky, G.V. Domogatsky, E. Z. Meilikhov, Yu. N. Panin, V. D. Pis'mennyi, A. V. Kessenikh, E. P. Velikhov, S. P. Denisov, Viktor Matveev, V.B. Brudanin, P. D. Sukharevsky, A. A. Korsheninnikov, B. G. Erozolimsky, L. N. Bondarenko, Yu. Ts. Oganessian, E. E. Saperstein, L. A. Mikaelyan, Yu. S. Lutostansky, V. V. Khrushchev, V. V. Fedorov, N. B. Shulgina, V. P. Krainov, E. Kh. Akhmedov, M. A. Polikarpov, V. P. Labozin, A. N. Pastukhov, D. F. Zaretsky, R. U. Khafizov, V. P. Martemyanov, V. A. Bednyakov, V. I. Morozov, A. A. Ogloblin, D. K. Nadezhin, I. V. Panov, V. I. Ozhogin, A. V. Tikhomirov, M. I. Panasyuk, Semen S. Gershtein, L. D. Blokhintsev, V. P. Vizgin, D. M. Vladimirov, V. Ya. Panchenko, Yu. A. Muromkin, A. Ya. Balysh, S. S. Yakimov, M. D. Skorokhvatov, F. Shimkovich, Yu. G. Abov, I. N. Mishustin, G. P. Pokhil, Yu. N. Dnestrovsky, S. P. Kamerdzhiev, and S. V. Semenov

Subjects
Physics, Nuclear and High Energy Physics, Theoretical physics, Atomic and Molecular Physics, and Optics
Published
2010

137. Present status of the BAIKAL-GVD project development

Author

L. A. Kuzmichev, A. I. Panfilov, V.F. Kulepov, K.V. Golubkov, M.I. Rozanov, V. Karnaukhov, Valery Zurbanov, V. A. Kozhin, A.D. Avrorin, A. A. Perevalov, D. P. Petukhov, G.V. Domogatsky, R. Bannasch, S.V. Fialkovsky, Aleksandr Gafarov, V. A. Zhukov, R. R. Mirgazov, K. V. Konishchev, A. V. Zagorodnikov, A.P. Koshechkin, A. V. Skurikhin, D. Bogorodsky, N. M. Budnev, Olga Suvorova, I. A. Danilchenko, T. I. Gress, A. A. Sheifler, E. A. Osipova, L. V. Pankov, V.I. Ljashuk, A. A. Doroshenko, Zh.-A.M. Dzhilkibaev, O. N. Gaponenko, V. Rubzov, D.A. Kuleshov, M.B. Milenin, A.V. Korobchenko, V.B. Brudanin, Evgenii V Rjabov, B.A. Shaybonov, F.K. Koshel, A. N. Dyachok, B. A. Tarashchansky, I. A. Belolaptikov, Konstantin Kebkal, A. G. Kebkal, E.N. Pliskovsky, A. M. Klabukov, A. Pan'kov, V. M. Aynutdinov, Sergey Yakovlev, V Dobrinin, and V.A. Poleshuk

Subjects
History, Engineering, Data acquisition, Neutrino detector, business.industry, Neutrino telescope, Systems engineering, Project management, business, Civil engineering, Technical design, Computer Science Applications, Education
Abstract

We present a current status of the Baikal-GVD Project. The objective of this project is a construction of a km3-scale neutrino telescope in the Baikal lake. Set of prototype arrays which were installed and operated during 2009-2011 in Lake Baikal allowed to study all basic elements of the future full detector and to finalize the GVD technical design. We discuss the configuration and the design of the engineering arrays as well as DAQ performance and the preliminary results.

Published
2013

138. Search of Neutrinoless Double Beta Decay with the GERDA Experiment

Author

Alessandro Bettini, P. Moseev, Allen Caldwell, Luciano Pandola, L. Ioannucci, K. N. Gusev, A. Kirsch, A. A. Klimenko, V. I. Gurentsov, Stefan Schönert, N. Rumyantseva, M. Heisel, D. Palioselitis, A. Lazzaro, Laura Baudis, Gerd Marissens, H. Y. Liao, J. Jochum, Bayarto Lubsandorzhiev, L. V. Inzhechik, V. V. Kazalov, K. von Sturm, O.I. Kochetov, T. Wester, Claudio Gotti, A.A. Smolnikov, S. T. Belyaev, M. Junker, N. Becerici-Schmidt, G. Heusser, A. M. Gangapshev, H. Wilsenach, C. A. Ur, W. Hoffmann, I. Zhitnikov, C. Cattadori, Kai Zuber, H. Seitz, A. Wegmann, Marcin Wójcik, Manfred Lindner, Igor Nemchenok, M. Stepaniuk, C. Macolino, E. Doroshkevich, O. Selivalenko, V. I. Lebedev, P. Grabmayr, Bela Majorovits, M. Walter, H. Strecker, M. Allardt, Oliver Schulz, J. Janicksó Csáthy, M. Balata, Alberto Pullia, W. Hampel, E. V. Demidova, I. V. Kirpichnikov, K. Freund, O. Fedorova, A. Garfagnini, M. Shirchenko, L. Vanhoefer, B. Schwingenheuer, A. Hegai, E. Medinaceli, T. Bode, I. R. Barabanov, W. Maneschg, Cinzia Sada, Matthias Laubenstein, S. V. Zhukov, P. Zavarise, E. A. Yanovich, Stefano Nisi, S. Belogurov, M. Salathe, Christian Bauer, K. Panas, V. Wagner, N. Frodyma, Luca Stanco, V. D'Andrea, V. N. Kornoukhov, K. Pelczar, Giovanni Benato, A. Lubashevskiy, A. A. Vasenko, M. Reissfelder, V. Egorov, K. T. Knöpfle, Guillaume Lutter, A. M. Bakalyarov, R. Brugnera, V. V. Kuzminov, Matteo Agostini, G. Zuzel, R. Falkenstein, C. Gooch, Ivano Lippi, A. V. Veresnikova, C. Schmitt, A. Domula, A. Chernogorov, Stefano Riboldi, V.B. Brudanin, Hardy Simgen, M. Misiaszek, D. Borowicz, B. Lehnert, L. B. Bezrukov, E. Shevchik, G. Pessina, D. Budjáš, E. Bellotti, Thomas Kihm, D. R. Zinatulina, Mikael Hult, S. Hemmer, J. Schreiner, B. Schneider, and C. Wiesinger

Subjects
Semileptonic decay, Particle physics, Nuclear and High Energy Physics, enriched Ge, enriched Ge detectors, chemistry.chemical_element, Germanium, 01 natural sciences, 76Ge, Lower limit, neutrinoless double beta decay, Nuclear physics, T-1/2(0 nu), Double beta decay, 0103 physical sciences, 010306 general physics, detectors, Physics, Ge-76, T1/20ν, Enriched Ge detectors, Neutrinoless double beta decay, 010308 nuclear & particles physics, Semiconductor detector, MAJORANA, chemistry, Neutrino
Abstract

The GERDA (GERmanium Detector Array) is an experiment for the search of neutrinoless double beta decay ( 0 ν β β ) in 76Ge, located at Laboratori Nazionali del Gran Sasso of INFN (Italy). In the first phase of the experiment, a 90% confidence level (C.L.) sensitivity of 2.4 ⋅ 10 25 yr on the 0 ν β β decay half-life was achieved with a 21.6 kg⋅yr exposure and an unprecedented background index in the region of interest of 10−2 counts/(keV⋅kg⋅yr). No excess of signal events was found, and an experimental lower limit on the half-life of 2.1 ⋅ 1025 yr (90% C.L.) was established. Correspondingly, the limit on the effective Majorana neutrino mass is m e e 0.2 – 0.4 eV , depending on the considered nuclear matrix element. The previous claim for evidence of a 0 ν β β decay signal is strongly disfavored, and the field of research is open again.

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139. The MAJORANA DEMONSTRATOR for 0νββ: Current Status and Future Plans

Author

Yuen-Dat Chan, S. J. Meijer, M. Shirchenko, John L. Orrell, O.I. Kochetov, A. Hegai, Eric W. Hoppe, R. D. Martin, M. A. Howe, A. S. Barabash, J. MacMullin, R. G. H. Robertson, N. Snyder, J. Gruszko, G. K. Giovanetti, Tatsushi Shima, J. C. Loach, Yu. Efremenko, E. Romero-Romero, Jonathan D. Leon, C.M. O'Shaughnessy, K. Pushkin, Matthew Busch, D. G. Phillips, Brian D. LaFerriere, Keith Rielage, J. F. Wilkerson, C.-H. Yu, James E. Fast, Nicole R. Overman, P. Finnerty, V. V. Timkin, Susanne Mertens, C. Cuesta, A. S. Caldwell, B. R. White, D. Byram, S. MacMullin, C. Wiseman, J. Rager, M. C. Ronquest, Jeffrey K. Thompson, Richard T. Kouzes, Alexis G. Schubert, B. Shanks, V. E. Guiseppe, D. C. Combs, D. C. Radford, W. Xu, K. J. Snavely, S. I. Konovalov, K. N. Gusev, E. Yakushev, K. Vorren, F. M. Fraenkle, C. D. Christofferson, Vladimir Yumatov, F. E. Bertrand, Stanley M. Howard, A. R. Young, S. R. Elliott, M. F. Kidd, Werner Tornow, M. Boswell, Kai Vetter, Ryuta Hazama, Masaharu Nomachi, J. E. Trimble, V. G. Egorov, Alan Poon, Anne-Marie Suriano, J. A. Detwiler, A. Galindo-Uribarri, P. J. Doe, K. J. Keeter, V.B. Brudanin, F. T. Avignone, R. L. Varner, Reyco Henning, S. Vasilyev, A. L. Hallin, N. Abgrall, L. E. Leviner, M. P. Green, E. Aguayo, H. Ejiri, and J. Goett

Subjects
Physics, business.industry, majorana, Physics and Astronomy(all), Modular design, germanium detector, neutrinoless double beta decay, Semiconductor detector, Nuclear physics, MAJORANA, Region of interest, Double beta decay, Systems engineering, business
Abstract

The MAJORANA DEMONSTRATOR will search for neutrinoless-double-beta decay (0νββ) in 76Ge, while establishing the feasibility of a future tonne-scale germanium-based 0νββ experiment, and performing searches for new physics beyond the Standard Model. The experiment, currently under construction at the Sanford Underground Research Facility in Lead, SD, will consist of a pair of modular high-purity germanium detector arrays housed inside of a compact copper, lead, and polyethylene shield. Through a combination of strict materials qualifications and assay, low-background design, and powerful background rejection techniques, the Demonstrator aims to achieve a background rate in the 0νββ region of interest (ROI) of no more than 3 counts in the 0νββ-decay ROI per tonne of target isotope per year (cnts/(ROI-t-y)). The current status of the Demonstrator is discussed, as are plans for its completion.

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141. Searches for sterile neutrinos at the DANSS experiment

Author

Vyacheslav Egorov, D. R. Zinatulina, D.V. Filosofov, Nikita Pogorelov, Eduard Samigullin, M. Fomina, Dmitry Ponomarev, Yuriy Shitov, Alexander Olshevsky, Zdenek Hons, V. Belov, J. Vlasek, V. Rusinov, I. Zhitnikov, Evgeny Tarkovsky, Nadezhda Rumyantseva, D. Medvedev, M. Shirchenko, I. G. Alekseev, D. N. Svirida, Aleksander Starostin, Mikhail V Danilov, V.B. Brudanin, Alexander Kobyakin, V. M. Nesterov, I. Rozova, Sergey Kazartcev, Alexey Kuznetsov, Natalia Skrobova, Yegor Shevchik, and Irina Machikhiliyan

Subjects
Physics, Semileptonic decay, Photomultiplier, Sterile neutrino, Particle physics, Muon, Scintillation counter, Electromagnetic shielding, Anomaly (physics)

142. Search for cascade events with Baikal-GVD

Author

Zhan-Arys Magysovich Dzhilkibaev, G.V. Domogatsky, R. R. Mirgazov, N. M. Budnev, A. I. Panfilov, A.V. Korobchenko, O.G. Kebkal, M.I. Rozanov, Ivan Štekl, V. Nazari, I. A. Belolaptikov, B.A. Shaybonov, A.G. Solovjev, A. N. Dyachok, A. A. Doroshenko, Konstantin Kebkal, Evgeny V. Khramov, A.V. Kozhin, A. V. Skurikhin, Olga Suvorova, V.B. Brudanin, G.B. Safronov, M.K. Kryukov, M.B. Milenin, Rastislav Dvornický, K.V. Konischev, K.V. Golubkov, D. P. Petukhov, Sergey Yakovlev, A.D. Avrorin, E.N. Pliskovsky, Evgenii V Rjabov, S.V. Fialkovsky, E. O. Sushenok, R. Bannash, V.D. Rushay, V.M. Aynutdinov, T. I. Gress, Lukas Fajt, A.P. Koshechkin, M.M. Kolbin, B.A. Tarashansky, R. Ivanov, V.A. Tabolenko, N.S. Gorshkov, Aleksandr Gafarov, V.F. Kulepov, M.N. Sorokovikov, M.V. Kruglov, A.V. Avrorin, Fedor Šimkovic, and Mark Shelepov

Subjects
Physics, Physics::Instrumentation and Detectors, Cascade, Astrophysics::High Energy Astrophysical Phenomena, Neutrino telescope, Astrophysics::Instrumentation and Methods for Astrophysics, Mode (statistics), High Energy Physics::Experiment, Astrophysics, Neutrino, Nonlinear Sciences::Pattern Formation and Solitons
Abstract

Baikal-GVD is a next generation, kilometer-scale neutrino telescope currently under construction in Lake Baikal. GVD is formed by multi-megaton subarrays (clusters) and is designed for the detection of astrophysical neutrino fluxes at energies from a few TeV up to 100 PeV. The design of Baikal-GVD allows one to search for astrophysical neutrinos with flux values measured by IceCube already at early phases of the array construction. We present here preliminary results of the search for high-energy neutrinos via the cascade mode with the Baikal-GVD neutrino telescope.

143. The background in the $$0\nu \beta \beta $$ 0 ν β β experiment Gerda

Author

A. Domula, A. Garfagnini, M. Allardt, A. Chernogorov, M. Laubenstein, A. A. Machado, D. Budjáš, L. Stanco, I. V. Kirpichnikov, V. G. Egorov, M. Balata, S. Hemmer, P. Zavarise, Manfred Lindner, A. Kirsch, K. N. Gusev, C. A. Ur, A. Hegai, V. I. Lebedev, H. Strecker, V. Wagner, V.B. Brudanin, K. T. Knöpfle, Hardy Simgen, A. D. Ferella, F. Cossavella, A. A. Vasenko, D. Palioselitis, I. R. Barabanov, T. Bode, A. Wegmann, Igor Nemchenok, Bela Majorovits, C. Bauer, O. Schulz, X. Liu, M. Walter, S. V. Zhukov, Stefano Riboldi, G. Heusser, M. Salathe, A. Lubashevskiy, Alessandro Bettini, W. Maneschg, E. A. Yanovich, Stefano Nisi, Laura Baudis, D. R. Zinatulina, Marcin Wójcik, B. Lehnert, O. Volynets, J. Janicskó Csáthy, Josef Jochum, R. Brugnera, P. Grabmayr, N. Becerici-Schmidt, M. Tarka, V. V. Kuzminov, Matteo Agostini, M. Barnabe Heider, H. Y. Liao, V. N. Kornoukhov, K. Pelczar, V. I. Gurentsov, Mikael Hult, L. V. Inzhechik, W. Hampel, E. V. Demidova, I. Zhitnikov, Luciano Pandola, A. A. Klimenko, Werner Hofmann, T. Wester, Guillaume Lutter, M. Heisel, A. M. Bakalyarov, E. Andreotti, A.A. Smolnikov, Bayarto Lubsandorzhiev, C. Cattadori, Kai Zuber, K. Freund, Claudio Gotti, R. Falkenstein, B. Schwingenheuer, S. Belogurov, Jochen Schreiner, G. Zuzel, C. Schmitt, Ivano Lippi, M. Shirchenko, C. Macolino, N. Barros, M. Junker, Allen Caldwell, L. Ioannucci, C.M. O'Shaughnessy, K. K. Guthikonda, A. Lazzaro, K. von Sturm, S. Schönert, A. Pullia, Cinzia Sada, E. Bellotti, Giovanni Benato, Thomas Kihm, L. B. Bezrukov, E. Shevchik, G. Pessina, N. Frodyma, O.I. Kochetov, S. T. Belyaev, and A. M. Gangapshev

Subjects
Physics, Isotopes of germanium, Physics and Astronomy (miscellaneous), Physics::Instrumentation and Detectors, Astrophysics::Instrumentation and Methods for Astrophysics, Beta decay, Nuclear physics, Double beta decay, Beta (velocity), High Energy Physics::Experiment, Alpha decay, Decay chain, Nuclear Experiment, Engineering (miscellaneous), Energy (signal processing), Radioactive decay
Abstract

The GERmanium Detector Array (Gerda) experiment at the Gran Sasso underground laboratory (LNGS) of INFN is searching for neutrinoless double beta ( $$0\nu \beta \beta $$ ) decay of $$^{76}$$ Ge. The signature of the signal is a monoenergetic peak at 2039 keV, the $$Q_{\beta \beta }$$ value of the decay. To avoid bias in the signal search, the present analysis does not consider all those events, that fall in a 40 keV wide region centered around $$Q_{\beta \beta }$$ . The main parameters needed for the $$0\nu \beta \beta $$ analysis are described. A background model was developed to describe the observed energy spectrum. The model contains several contributions, that are expected on the basis of material screening or that are established by the observation of characteristic structures in the energy spectrum. The model predicts a flat energy spectrum for the blinding window around $$Q_{\beta \beta }$$ with a background index ranging from 17.6 to 23.8 $$\times $$ $$10^{-3}$$ cts/(keV kg yr). A part of the data not considered before has been used to test if the predictions of the background model are consistent. The observed number of events in this energy region is consistent with the background model. The background at $$Q_{\beta \beta }$$ is dominated by close sources, mainly due to $$^{42}$$ K, $$^{214}$$ Bi, $$^{228}$$ Th, $$^{60}$$ Co and $$\alpha $$ emitting isotopes from the $$^{226}$$ Ra decay chain. The individual fractions depend on the assumed locations of the contaminants. It is shown, that after removal of the known $$\gamma $$ peaks, the energy spectrum can be fitted in an energy range of 200 keV around $$Q_{\beta \beta }$$ with a constant background. This gives a background index consistent with the full model and uncertainties of the same size.

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144. Neutrino Telescope in Lake Baikal: Present and Future

Author

M.N. Sorokovikov, M.B. Milenin, N. M. Budnev, A.V. Korobchenko, Evgenii V Rjabov, Mark Shelepov, A. V. Skurikhin, V.B. Brudanin, A.V. Avrorin, N.S. Gorshkov, M.V. Kruglov, V.F. Kulepov, R. R. Mirgazov, G.B. Safronov, Rastislav Dvornický, V. M. Aynutdinov, K.V. Golubkov, T. I. Gress, Sergey Yakovlev, Aleksandr Gafarov, Lukas Fajt, S.V. Fialkovsky, E. O. Sushenok, B.A. Tarashansky, M.M. Kolbin, A.D. Avrorin, G.V. Domogatsky, V.D. Rushay, I. A. Belolaptikov, Konstantin Kebkal, K.V. Konischev, V. Nazari, E.N. Pliskovsky, A.P. Koshechkin, D. P. Petukhov, A. A. Doroshenko, Zh.-A.M. Dzhilkibaev, A. I. Panfilov, O.G. Kebkal, M.I. Rozanov, A.G. Solovjev, B.A. Shaybonov, A. N. Dyachok, R. Bannash, Evgeny V. Khramov, I. Stekl, R. Ivanov, V.A. Tabolenko, A.V. Kozhin, Olga Suvorova, M.K. Kryukov, and Fedor Šimkovic

Subjects
Physics, COSMIC cancer database, Physics::Instrumentation and Detectors, Gravitational wave, Astrophysics::High Energy Astrophysical Phenomena, Neutrino telescope, Astrophysics::Instrumentation and Methods for Astrophysics, Northern Hemisphere, Astronomy, Physics::Geophysics, Relativistic particle, High Energy Physics::Experiment, Neutrino, Effective volume
Abstract

A significant progress in the construction and operation of the Baikal Gigaton Volume Detector in Lake Baikal, the largest and deepest freshwater lake in the world, is reported. The effective volume of the detector for neutrino initiated cascades of relativistic particles with energy above 100 TeV has been increased up to about 0.25 km3. This unique scientific facility, the largest operating neutrino telescope in Northern Hemisphere, allows already to register two to three events per year from astrophysical neutrinos with energies exceeding 100 TeV. Preliminary results obtained with data recorded in 2016-2018 are announced. Multimessenger approach is used to relate finding of cosmic neutrinos with those of classical astronomers, with X-ray or gamma-ray observations and the gravitational wave events.

145. A positioning system for Baikal-GVD

Author

A.V. Avrorin, A.V. Korobchenko, Mark Shelepov, Zhan-Arys Magysovich Dzhilkibaev, B.A. Shaybonov, A.P. Koshechkin, G.B. Safronov, A. N. Dyachok, Rastislav Dvornický, M.V. Kruglov, A. I. Panfilov, Evgeny V. Khramov, R. R. Mirgazov, O.G. Kebkal, A.V. Kozhin, R. Bannash, K.V. Golubkov, Olga Suvorova, M.I. Rozanov, V.F. Kulepov, Evgenii V Rjabov, A.G. Solovjev, B.A. Tarashansky, A. V. Skurikhin, N.S. Gorshkov, V. M. Aynutdinov, E.N. Pliskovsky, Sergey Yakovlev, N. M. Budnev, I. Stekl, R. Ivanov, V.A. Tabolenko, M.K. Kryukov, Aleksandr Gafarov, K.V. Konischev, D. P. Petukhov, T. I. Gress, A. A. Doroshenko, Lukas Fajt, M.N. Sorokovikov, M.M. Kolbin, M.B. Milenin, S.V. Fialkovsky, E. O. Sushenok, V.D. Rushay, V.B. Brudanin, I. A. Belolaptikov, V. Nazari, Konstantin Kebkal, A.D. Avrorin, G.V. Domogatsky, and Fedor Šimkovic

Subjects
Spatial positioning, Timing error, Positioning system, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Detector, Neutrino telescope, Astrophysics::Instrumentation and Methods for Astrophysics, Photodetector, Neutrino, Geology, Cherenkov radiation, Remote sensing
Abstract

A cubic kilometer scale neutrino telescope Baikal-GVD is currently under construction in Lake Baikal. Baikal-GVD is designed to detect Cerenkov radiation from products of astrophysical neutrino interactions with Baikal water by a lattice of photodetectors submerged between the depths of 1275 and 730 m. The detector components are mounted on flexible strings and can drift from their initial positions upwards to tens of meters. This introduces positioning uncertainty which translates into a timing error for Cerenkov signal registration. A spatial positioning system has been developed to resolve this issue. In this contribution, we present the status of this system, results of acoustic measurements and an estimate of positioning error for an individual component.

146. Recent progress of the Baikal-GVD project

Author

Mikhail Kuzmich Kryukov, Aleksandr Gafarov, B.A. Tarashansky, K.V. Konischev, A.D. Avrorin, G.V. Domogatsky, R. R. Mirgazov, A. A. Doroshenko, Alexei Gennadevich Solovjev, G.B. Safronov, Mark Shelepov, Vladimir Dmitrievich Rushay, Vahab Nazari, V.M. Aynutdinov, Maksim Viktorovich Kruglov, I. A. Belolaptikov, Konstantin Kebkal, Vicktor Fedorovich Kulepov, Ivan Štekl, Andrei Petrovich Koshechkin, Andrei Ivanovich Panfilov, Zhan-Arys Magysovich Dzhilkibaev, Fedor Šimkovic, E.N. Pliskovsky, Evgenii V Rjabov, R. Bannash, Euvgenii Vladimirovich Khramov, Dmitrii Petrovich Petukhov, S.V. Fialkovsky, T. I. Gress, M.I. Rozanov, Lukas Fajt, Maksim Nikolaevich Sorokovnikov, A.V. Skurihin, V.A. Tabolenko, A.V. Korobchenko, Euvgenii Olegovich Sushenok, M.M. Kolbin, V.B. Brudanin, N. M. Budnev, K.V. Golubkov, Родион Andreevich Ivanov, Oleksiy Geogievich Kebkal, Sergey Yakovlev, V. A. Kozhin, M.B. Milenin, B.A. Shaybonov, A. N. Dyachok, Aleksandr Valentinovich Avrovin, Rastislav Dvornicky, Olga Suvorova, and Nikita Sergeevich Gorshkov

Subjects
Shore, Physics, geography, geography.geographical_feature_category, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Detector, Neutrino telescope, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, law.invention, Relativistic particle, Telescope, law, Cluster (physics), High Energy Physics::Experiment, Neutrino, Effective volume
Abstract

Cubic kilometer scale neutrino telescope Baikal-GVD is currently under construction in Lake Baikal. The detector is specially designed for search for high energies neutrinos whose sources are not yet reliably identified. Since April 2019 the telescope has been successfully operated in complex of five functionally independent clusters i.e. sub-arrays of optical modules where now are hosted 1440 OMs on 40 vertical strings. Each cluster is connected to shore by individual electro-optical cables. The effective volume of the detector for neutrino initiated cascades of relativistic particles with energy above 100 TeV has been increased up to about 0.25 km$^3$. Preliminary results with data samples of 2015-2018 years are discussed.

147. Data quality monitoring system in the Baikal-GVD experiment

Author

Aleksandr Gafarov, D. P. Petukhov, A.V. Kozhin, Olga Suvorova, Evgenii V Rjabov, V.D. Rushay, K.V. Golubkov, E.N. Pliskovsky, N. M. Budnev, R. R. Mirgazov, M.K. Kryukov, V.F. Kulepov, A.P. Koshechkin, T. I. Gress, I. A. Belolaptikov, Konstantin Kebkal, B.A. Shaybonov, B.A. Tarashansky, A.V. Korobchenko, Mark Shelepov, Lukas Fajt, A. N. Dyachok, R. Bannash, M.V. Kruglov, Evgeny V. Khramov, K.V. Konischev, V.B. Brudanin, A. I. Panfilov, O.G. Kebkal, M.M. Kolbin, A. A. Doroshenko, A.D. Avrorin, M.I. Rozanov, I. Stekl, R. Ivanov, Zh.-A.M. Dzhilkibaev, A.G. Solovjev, G.V. Domogatsky, A. V. Skurikhin, V.A. Tabolenko, V. Nazari, V. M. Aynutdinov, M.B. Milenin, Sergey Yakovlev, M.N. Sorokovikov, Fedor Šimkovic, G.B. Safronov, Rastislav Dvornický, A.V. Avrorin, N.S. Gorshkov, S.V. Fialkovsky, and E. O. Sushenok

Subjects
Quality (physics), Computer science, Data quality, Real-time computing, Detector, Experimental data, Monitoring system, Point (geometry)
Abstract

The quality of the incoming experimental data has a significant importance for both analysis and running the experiment. The main point of the Baikal-GVD DQM system is to monitor the status of the detector and obtained data on the run-by-run based analysis. It should be fast enough to be able to provide analysis results to detector shifter and for participation in the global multimessenger system.

148. Status of the Baikal-GVD experiment - 2017

Author

V.F. Kulepov, A.P. Koshechkin, D. P. Petukhov, R. R. Mirgazov, Mark Shelepov, A. A. Doroshenko, E. A. Osipova, Aleksey Zagorodnikov, G.V. Domogatsky, A.D. Avrorin, Aleksandr Valentinovich Avrovin, Fedor Šimkovic, R. Bannash, K.V. Golubkov, I. A. Danilchenko, M.B. Milenin, V.M. Aynutdinov, V.A. Tabolenko, Aleksandr Gafarov, V.B. Brudanin, Zhan Dzhilkibaev, A. I. Panfilov, Ivan Štekl, Zdenek Hons, E.N. Pliskovsky, O.G. Kebkal, M.I. Rozanov, A.V. Korobchenko, N. M. Budnev, I. A. Belolaptikov, Valery Zurbanov, B.A. Tarashansky, Konstantin Kebkal, Sergey Yakovlev, D.A. Kuleshov, S.V. Fialkovsky, F.K. Koshel, T. I. Gress, V. A. Kozhin, Lukas Fajt, A.V. Skurihin, M.M. Kolbin, K.V. Konischev, G.B. Safronov, Rastislav Dvornický, Evgenii V Rjabov, Olga Suvorova, L. V. Pankov, B.A. Shaybonov, and A. N. Dyachok

Subjects
Scale (ratio), Neutrino telescope, Cluster (physics), Full scale, Environmental science, Remote sensing
Abstract

Baikal-GVD is a kilometer scale neutrino telescope under construction in Lake Baikal, which will be formed by multimegaton subarrays – clusters of strings. First demonstration cluster “Dubna” has been deployed in 2015 and comprises 192 optical modules (OMs). In 2016 cluster “Dubna” was upgraded to baseline configuration which comprises 288 OMs arranged at eight strings. The second full scale GVD-cluster was deployed and put in operation in 2017 in Lake Baikal. We review a present activity towards the GVD implementation and discuss some selected results obtained with array “Dubna”.

149. Hydroacoustic positioning system for the Baikal-GVD

Author

A.P. Koshechkin, R. Dvornicky, A.V. Kozhin, V.M. Aynutdinov, M.B. Milenin, G.B. Safronov, I. A. Danilchenko, R. R. Mirgazov, Olga Suvorova, A. V. Skurikhin, K.V. Konischev, F. Šimkovi, A. I. Panfilov, Sergey Yakovlev, L. V. Pankov, B.A. Tarashansky, O.G. Kebkal, M.I. Rozanov, Valery Zurbanov, Z. Honz, A.V. Korobchenko, G.V. Domogatsky, Aleksey Zagorodnikov, K.V. Golubkov, D. P. Petukhov, Ivan Štekl, Mark Shelepov, B.A. Shaybonov, S.V. Fialkovsky, E. A. Osipova, T. I. Gress, R. Bannash, E.N. Pliskovsky, A. N. Dyachok, Lukas Fajt, A.D. Avrorin, Evgenii V Rjabov, V.A. Tabolenko, M.M. Kolbin, V.B. Brudanin, Zhan-Arys Magysovich Dzhilkibaev, I. A. Belolaptikov, Konstantin Kebkal, A. A. Doroshenko, D.A. Kuleshov, F.K. Koshel, V.F. Kulepov, N. M. Budnev, Aleksandr Gafarov, and A.V. Avrorin

Subjects
Physics, Photomultiplier, Positioning system, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Acoustics, Neutrino telescope, Astrophysics::Instrumentation and Methods for Astrophysics, law.invention, Telescope, law, Functionally independent, Cluster (physics), Nonlinear Sciences::Pattern Formation and Solitons
Abstract

The Baikal-GVD neutrino telescope with an km3 scale detection volume is currently under construction at Lake Baikal. The telescope will be composed of functionally independent setups - clusters of strings of optical modules based on photomultiplier tubes (with eight strings in each cluster). First cluster of GVD in its baseline configuration was deployed in 2016. Spatial positions of light sensors are controlled by dedicated acoustic positioning system. The basic elements and the layout of the acoustic positioning system for the Baikal-GVD neutrino telescope are described, and selected results of system operation are presented.

150. The internal Compton effect in 203Tl

Author

I.S. Batkin, V.B. Brudanin, Yu.G. Smirnov, and A.S. Tchernigin

Subjects
Nuclear physics, Physics, Theoretical physics, Photon, Astrophysics::High Energy Astrophysical Phenomena, Compton scattering, General Physics and Astronomy, Coincidence, Spectral line
Abstract

Spectra of photons emitting due to internal Compton effect in 203Tl have been measured in a coincidence experiment. It is found that the calculated theoretical values from the formula of Wang Chang and Falkoff fit the experimental ones fairly well within the accuracy of the measurement.

Published
1975

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