Author: "C. Arpesella" - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"C. Arpesella"' showing total 55 results

Start Over Author "C. Arpesella"

55 results on '"C. Arpesella"'

1. First real time detection of 7Be solar neutrinos by Borexino

Author: A. Martemianov, S. Gazzana, K. McCarty, Andrew Sonnenschein, Malcolm J. Joyce, M. Misiaszek, Cristiano Galbiati, S. Vitale, G. Manuzio, S. Hardy, C. Salvo, O. Smirnov, Hardy Simgen, Matthias Laubenstein, V. Muratova, M. E. Monzani, O. Zaimidoroga, A. Pocar, Andrea Ianni, Sandra Zavatarelli, A.V. Etenko, Aldo Ianni, M. Goeger-Neff, G. Testera, A. Razeto, Livia Ludhova, V. G. Tarasenkov, D. Franco, F. Dalnoki-Veress, R. Tartaglia, L. Papp, G. Bellini, R. J. Ford, R. S. Raghavan, Marco Giammarchi, C. Arpesella, S. Bonetti, Marcin Wójcik, G. Korga, D. Kryn, Fausto Masetti, A. A. Sabelnikov, Paolo Lombardi, M. Skorokhvatov, C. Grieb, S. V. Sukhotin, Y. Suvorov, R. B. Vogelaar, Martin Deutsch, S. Schönert, L. Oberauer, M. Obolensky, H. de Kerret, L. Perasso, Fausto Ortica, I. Machulin, E. Litvinovich, B. Caccianiga, F. Calaprice, F. von Feilitzsch, L. Niedermeier, Michael K.H. Leung, B. Freudiger, Marco Pallavicini, D. D'Angelo, K. Fomenko, J. Benziger, G. Zuzel, A. Sotnikov, A. Derbin, E. Meroni, A. Goretti, G. Heusser, Gioacchino Ranucci, D. Montanari, D. Vignaud, Lino Miramonti, APC - Neutrinos, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Borexino, Arpesella, C., Suvorov, Y., Et, Al., Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, and PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)
Subjects: Low background detector, Nuclear and High Energy Physics, Particle physics, Liquid scintillator, Neutrino oscillation, [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Physics::Instrumentation and Detectors, Solar neutrino, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Astrophysics, 01 natural sciences, 7. Clean energy, Neutrino Oscillations, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Nuclear physics, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Experiment (nucl-ex), Nuclear Experiment, 010306 general physics, Borexino, Physics, ICARUS, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Astrophysics (astro-ph), High Energy Physics::Phenomenology, Solar neutrino problem, Low Background Detectors, Liquid Scintillators, 3. Good health, Solar Neutrinos, High Energy Physics - Phenomenology, Neutrino detector, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino
Abstract: This paper reports a direct measurement of the Be7 solar neutrino signal rate performed with the Borexino low background liquid scintillator detector. This is the first real-time spectral measurement of sub-MeV solar neutrinos. The result for 0.862 MeV Be7 is 47 +- 7 (stat} +- 12 (sys} counts/(day x 100 ton), consistent with predictions of Standard Solar Models and neutrino oscillations with LMA-MSW parameters., Paper submitted to PRLB. 9 pages, 6 figures (EPS) PDF files included into tar.gz file, together with LaTeX source, eps figs and style files
Published: 2008

2. Borexino

Author: Gioacchino Ranucci, G. Alimonti, C. Arpesella, H.O. Beck, M. Balata, T. Beau, G. Bellini, J. Benziger, S. Bonetti, A. Brigatti, B. Caccianiga, L. Cadonati, F.P. Calaprice, G. Cecchet, M. Chen, A. De Bari, E. De Haas, O. Donghi, M. Deutsch, F. Elisei, A. Etenko, F. Von Feilitzsch, R. Fernholz, R. Ford, B. Freudiger, A. Garagiola, F. Gatti, S. Gazzana, M.G. Giammarchi, D. Giugni, A. Golubchikov, A. Goretti, C. Grieb, C. Hagner, T. Hagner, W. Hampel, E. Harding, F.X. Hartmann, R. von Hentig, H. Hess, G. Heusser, A. Ianni, P. Inzani, H. De Kerret, S. Kidner, J. Kiko, T. Kirsten, G. Korga, G. Korschinek, D. Kryn, V. Lagomarsino, M. Laubenstein, F. Loeser, P. Lombardi, S. Magni, S. Malvezzi, J. Maneira, I. Manno, G. Manuzio, F. Masetti, U. Mazzucato, E. Meroni, P. Musico, H. Neder, M. Neff, S. Nisi, L. Oberauer, M. Obolensky, M. Pallavicini, L. Papp, L. Perasso, A. Pocar, R.S. Raghavan, G. Ranucci, W. Rau, A. Razeto, E. Resconi, T. Riedel, A. Sabelnikov, P. Saggese, C. Salvo, R. Scardaoni, S. Schnert, K.H. Schuubeck, H. Seidel, T. Shutt, A. Sonnenschein, O. Smirnov, A. Sotnikov, M. Skorokhvatov, S. Sukhotin, R. Tartaglia, G. Testera, R.B. Vogelaar, S. Vitale, M. Woijcik, O. Zaimidoroga, and Y. Zakharov
Subjects: Nuclear and High Energy Physics, Atomic and Molecular Physics, and Optics
Published: 2001

3. The cross section of 3He(3He,2p)4He measured at solar energies

Author: J. M. Lambert, S. Zavatarelli, G. Gervino, P. Prati, C. Rolfs, H. P. Trautvetter, A. D'Alessandro, C. Gustavino, C. Arpesella, P. Corvisiero, Giovanni Fiorentini, M. Junker, W.S. Rodney, Uwe Greife, E. Bellotti, A. Fubini, and Carlo Broggini
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Range (particle radiation), Cross section (physics), Projectile, Extrapolation, Electron, Nuclide, Atomic physics, Resonance (particle physics), Atomic and Molecular Physics, and Optics
Abstract: We report on the status of the 3He(3He,2p)4He experiment at the underground accelerator facility LUNA (Gran Sasso). The lowest projectile energies for the measured cross section correspond already to energies below the center of the solar Gamow peak (E0=22 keV). The data provide no evidence for the existence of a hypothetical resonance in the energy range investigated. Although no extrapolation is needed anymore (except for energies at the low-energy tail of the Gamow peak), the data must be corrected for the effects of electron screening, clearly observed the first time for the 3He(3He,2p)4He reaction. The effects are however larger than expected and not understood, leading presently to the largest uncertainty on the quoted S(0) value for bare nuclides (=5.40 MeVb).
Published: 1999

4. Performances of the CTF experiment in prospect of Borexino

Author: Gioacchino Ranucci, G. Alimonti, G. Anghloher, C. Arpesella, M. Balata, G. Bellini, J. Benziger, S. Bonetti, A. Brigatti, L. Cadonati, F.P. Calaprice, G. Cecchet, M. Chen, N. Darnton, A. de Bari, M. Deutsch, R. Dossi, F. Elisei, F. von Feilitzsch, C. Galbiati, A. Garagiola, F. Gatti, M.G. Giammarchi, D. Giugni, T. Goldbrunner, A. Golubchikov, A. Goretti, T. Hagner, F. Hartmann, R. von Hentig, G. Heusser, A. Ianni, J. Jochum, M. Johnson, G. Korga, M. Laubenstein, F. Loeser, P. Lombardi, S. Magni, S. Malvezzi, I. Manno, G. Manuzio, F. Masetti, U. Mazzucato, E. Meroni, M. Neff, S. Nisi, A. Nostro, L. Oberauer, A. Perotti, P. Raghavan, R.S. Raghavan, G. Ranucci, E. Resconi, M. Ruscitti, F. Sacchetti, R. Scardaoni, S. Schönert, O. Smirnov, A. Sotnikov, R. Tartaglia, G. Testera, B. Vogelaar, S. Vitale, M. Wojcik, and O. Zaimidoroga
Subjects: Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Solar neutrino, Liquid scintillation counting, Detector, Low activity, Full scale, Flux, Scintillator, Atomic and Molecular Physics, and Optics, Nuclear physics, High Energy Physics::Experiment, Borexino
Abstract: The crucial issue of the direct determination of the 7 Be solar neutrino flux will be addressed by the Borexino experiment, a real time, massive calorimetric liquid scintillation detector to be installed at the Gran Sasso Laboratory. The challenge of the extremely low radioactive level allowed in the scintillator for the feasibility of the measurement required the precise and sensitive evaluation of its radiopurity with a dedicated 5 tons prototype, the Counting Test Facility. The main experimental features of the CTF and its unprecedented results in the area of the low activity measurements are described in this paper, together with their implications in the design of the full scale experiment.
Published: 1999

5. Cross section of3He(3He,2p)4He measured at solar energies

Author: C. Gustavino, Giovanni Fiorentini, H. P. Trautvetter, J. M. Lambert, E. Bellotti, A. D'Alessandro, C. Arpesella, W.S. Rodney, A. Fubini, Carlo Broggini, P. Corvisiero, G. Gervino, Uwe Greife, Sandra Zavatarelli, M. Junker, Paolo Prati, C. Rolfs, Frank Strieder, and D. Zahnow
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Solar neutrino, Center (category theory), Electron, Neutrino, Solar neutrino problem, Nuclear Experiment, Neutrino oscillation, Resonance (particle physics), Energy (signal processing)
Abstract: We report on the results of the ${}^{3}\mathrm{He}{(}^{4}\mathrm{He}{,2p)}^{4}\mathrm{He}$ experiment at the underground accelerator facility LUNA (Gran Sasso). For the first time the lowest projectile energies utilized for the cross section measurement correspond to energies below the center of the solar Gamow peak ${(E}_{0}=22 \mathrm{keV})$. The data provide no evidence for the existence of a hypothetical resonance in the energy range investigated. Although no extrapolation is needed anymore (except for energies at the low-energy tail of the Gamow peak), the data must be corrected for the effects of electron screening, clearly observed the first time for the ${}^{3}\mathrm{He}{(}^{3}\mathrm{He}{,2p)}^{4}\mathrm{He}$ reaction. The effects are, however, larger than expected and not understood, leading presently to the largest uncertainty on the quoted ${S}_{b}(0)$ value for bare nuclides (=5.40 MeV b).
Published: 1998

6. Measurement of the 14C abundance in a low-background liquid scintillator

Author: R. B. Vogelaar, Ugo Mazzucato, S. Magni, G. Bellini, S. Schönert, M. Deutsch, Fausto Elisei, G. Heusser, Stefano Bonetti, A. Golubchikov, Lothar Oberauer, Sandra Malvezzi, O. Smirnov, Gioacchino Ranucci, M. Ruscitti, R. S. Raghavan, N. Darnton, Matthias Laubenstein, Flavio Gatti, M. Johnson, A. de Bari, R. Tartaglia, I. Manno, F. von Feilitzsch, E. Meroni, Laura Cadonati, G. Cecchet, G. Angloher, G. Manuzio, G. Testera, D. Giugni, A. Perotti, R. von Hentig, J. Jochum, M. Neff, Frank Calaprice, G. Alimonti, A. Ianni, R. Scardaoni, C. Arpesella, Fausto Masetti, T. Hagner, A. Nostro, O. Zaimidoroga, A. Goretti, M. Balata, T. Goldbrunner, Cristiano Galbiati, S. Vitale, Elisa Resconi, F. X. Hartmann, Marco Giammarchi, Paolo Lombardi, A. Preda, P. Ullucci, M. L. Chen, and Jay Burton Benziger
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Abundance (chemistry), Solar neutrino, Liquid scintillation counting, Detector, Flux, High Energy Physics::Experiment, Neutrino, Scintillator, Spectroscopy
Abstract: The 14 C/ 12 C ratio in 4.8 m 3 of high-purity liquid scintillator was measured at (1.94±0.09)×10 −18 , the lowest 14 C abundance ever measured. At this level the spectroscopy of low-energy solar neutrinos, in particular a measurement of the 7 Be neutrino flux, will not be obstructed by the 14 C β decay intrinsic to a liquid scintillator detector. A comprehensive study of the deviation of the shape of the 14 C β spectrum from the allowed statistical shape reveals consistent results with recent observations and calculations. Possible origins of the 14 C in the liquid scintillator are discussed.
Published: 1998

7. Measurement of the 3He(3He,2p)4He cross section within the solar Gamow peak

Author: A. Fubini, Uwe Greife, D. Zahnow, G. Gervino, J. Lambert, C. Rolfs, H. P. Trautvetter, C. Arpesella, C. Gustavino, Giovanni Fiorentini, E. Bellotti, Carlo Broggini, Sandra Zavatarelli, M. Junker, Paolo Prati, P. Corvisiero, and W.S. Rodney
Subjects: Nuclear physics, Physics, Nuclear reaction, Nuclear and High Energy Physics, Range (particle radiation), Cross section (physics), Solar neutrino, Extrapolation, Nuclear astrophysics, Electron, Atomic physics, Resonance (particle physics)
Abstract: We report on the status of the 3He(3He,2p)4He experiment at the underground accelerator facility LUNA (Gran Sasso). The lowest projectile energies for the measured cross section correspond already to the energies at the center of the solar Gamow peak (21 keV). The data provide no evidence for the existence of a hypothetical resonance in the energy range investigated. Although no extrapolation is needed anymore (except for energies at the low-energy tail of the Gamow peak), the data must be corrected for the effects of electron screening, leading tentatively to S(0) = (5.1 ± 0.1) MeVb.
Published: 1996

8. A low background counting facility at laboratori nazionali del Gran Sasso

Author: C. Arpesella
Subjects: Nuclear physics, Physics, ICARUS, Radiation, Underground laboratory, Gamma spectroscopy
Abstract: A low background counting facility with gamma spectroscopy is working in the underground laboratory at LNGS. The main features and some measurements are described here.
Published: 1996

9. A possible gas for solar neutrino spectroscopy

Author: C. Cattadori, C. Arpesella, and C. Broggini
Subjects: Elastic scattering, Physics, Time projection chamber, Solar core, Physics::Instrumentation and Detectors, Solar neutrino, Astronomy and Astrophysics, Astrophysics, Electron, Neutrino, Solar neutrino problem, Kinetic energy
Abstract: We discuss the possibility of using pure CF 4 to fill a 2000 m 3 Time Projection Chamber in order to detect the solar neutrinos through the elastic scattering v e e − → v e e − , with the threshold of 100 keV on the kinetic energy of the recoiling electron. In a volume of 2000 m 3 of CF 4 at normal pressure and room temperature, which corresponds to a mass of 7.4 ton, we expect ~ 3300 of such events per year. The detector can give the spectrum of the low energy neutrinos from the Sun and it can identify solar neutrinos of different origin: pp , 7 Be, and, eventually, 8 B. We find that 14 C is a possible severe source of background: it is necessary to have a ratio 14 C/ 12 C lower than 10 −19 in order to be able to identify the pp neutrinos.
Published: 1996

10. Gamma ray activity of neodymium samples

Author: C. Arpesella, Lino Miramonti, P.P. Sverzellati, and E. Bellotti
Subjects: Physics, Nuclear and High Energy Physics, Radionuclide, chemistry, Radiochemistry, Gamma ray, chemistry.chemical_element, Thorium, Uranium, Instrumentation, Neodymium, Lutetium, Radioactive decay
Abstract: The gamma ray activity of three samples of natural neodymium has been measured and the concentration of radioactive elements from uranium and thorium chains as well as that from radioactive isotopes of lantanium and lutetium has been quantitatively determined. All the samples show significant contaminations up to p.p.m.
Published: 1996

11. A multiton low activity NaI(Tl) detector for underground physics

Author: Dai Chang Jiang, Kuang Hao-Huai, D. Prosperi, Valeria Landoni, Ding Linkai, C. Arpesella, R. Bernabei, W. Di Nicolantonio, A. Incicchitti, and P. Belli
Subjects: NaI(Tl), Physics, DAMA/LIBRA, detector, Physics::Instrumentation and Detectors, Solar neutrino, Settore FIS/01 - Fisica Sperimentale, Dark matter, Detector, SOLAR NEUTRINOS, Low activity, Astronomy, Astronomy and Astrophysics, Cosmic ray, Astrophysics, Settore FIS/04 - Fisica Nucleare e Subnucleare, Detectors and Experimental Techniques
Abstract: This paper presents the main physical goals reachable with a large mass and extremely radiopure NaI(Tl) set-up such as the detection of very low interacting rate Dark Matter candidates and of solar neutrinos.
Published: 1995

12. Laboratory for Underground Nuclear Astrophysics (LUNA)

Author: Paolo Prati, C. Rolfs, R.W. Kavanagh, F. Bartolucci, E. Bellotti, M. Junker, W.E. Schulte, A. Fubini, D. Zahnow, C. Gustavino, G. Gervino, H. P. Trautvetter, W.S. Rodney, G. Mezzorani, C. A. Barnes, A. Lanza, C. Arpesella, F. Gorris, Giovanni Fiorentini, P. Corvisiero, Carlo Broggini, Piero Quarati, and Uwe Greife
Subjects: Physics, Orders of magnitude (power), Nuclear and High Energy Physics, Calorimeter (particle physics), Physics::Instrumentation and Detectors, business.industry, Nuclear engineering, Detector, Monte Carlo method, Nuclear physics, Data acquisition, Nuclear astrophysics, High Energy Physics::Experiment, Nuclear Experiment, business, Instrumentation, Thermal energy, Beam (structure)
Abstract: A compact high-current 50 kV ion accelerator facility including a windowless gas target system, a beam calorimeter, and detector telescopes in close geometry has been built and tested. The data acquisition and analysis involved a multiparameter system and a Monte Carlo program. The LUNA facility, presently installed at the Gran Sasso underground laboratory, is a pilot project focused initially on cross section measurements of the ^3He(^3He, 2p)^4He reaction within the thermal energy region of the sun. To achieve this goal, the experimental sensitivity has been improved by more than four orders of magnitude over that of previous work.
Published: 1994

13. Search for ββ decay of 96 Zr and 150 Nd to excited states of 96 Mo and 150 Sm

Author: A. S. Barabash, C. Arpesella, P.P. Sverzellati, Ettore Fiorini, E. Bellotti, C. Brofferio, and V. I. Umatov
Subjects: Physics, Nuclear physics, Particle decay, Range (particle radiation), Decay scheme, Excited state, Double beta decay, Gamma ray, General Physics and Astronomy, Atomic physics, Decay product, Semiconductor detector
Abstract: New lower limits on the half-lives for ββ decay of 96Zr and 150Nd to excited states of 96Mo and 150Sm have been obtained. They range between 1 1019 and 4 1019 years (90% c.l.). The measurements were performed while searching for the de-excitation gamma rays of the daughter nuclide with a germanium detector. In addition, single-β decay of 96Zr has also been studied, providing a half-life for this process longer than 3.8 1019 y (90% c.l.).
Published: 1994

14. Electron screening in thed+3He fusion reaction

Author: M. Junker, H. W. Becker, Paolo Prati, Uwe Greife, A. Fubini, F. Bartolucci, C. Arpesella, G. Gervino, F. Gorris, Carlo Broggini, Giovanni Fiorentini, D. Zahnow, C. Gustavino, W.H. Schulte, P. Corvisiero, E. Bellotti, H. P. Trautvetter, and C. Rolfs
Subjects: Physics, Nuclear and High Energy Physics, Nuclear fusion, Electron, Atomic physics
Abstract: Cross section measurements of thed(3He,p)4He reaction have been extended to an energy as low asE cm =5.4 keV. The data have an improved accuracy compared with previous work and confirm the existence of electron screening. The combined analysis of the present and previous data leads to an electron screening potential ofU e =123 ± 9 eV. A similar analysis of previous data for3He(d, p)4He leads toU e =186 ± 9 eV. Both screening potentials differ due to the molecular and atomic aggregate state of the targets involved in these investigations and are significantly larger than expected from available atomic physics models, supporting the general trend in studies of electron screening.
Published: 1994

15. A new solar neutrino detector

Author: T. Kovacs, O. Zaimidoroga, Marco Giammarchi, G. Husser, Martin Deutsch, B. Alpat, J. Mitchell, P. Raghavan, R. Tartaglia, G. Cecchet, Gioacchino Ranucci, G. Testera, Francesco Ragusa, P. Ullucci, O. Smirnov, Alberto V. Donati, C. Arpesella, A. de Bari, G. Mantovani, P. Benetti, Fausto Elisei, Ugo Mazzucato, E. Meroni, Gianluca Alimonti, G. Bellini, Danilo Giugni, Sandip Pakvasa, R. S. Raghavan, G. Manuzio, S. Bonetti, Fausto Masetti, S. Schönert, I. Manno, S. Vitale, A. Golubchikov, Lothar Oberauer, A. Perotti, M. Campanella, R. Scardaoni, Frank Calaprice, F. von Feilitzsch, D. Franciotti, and Anna Preda
Subjects: Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Solar neutrino, Detector, Atomic and Molecular Physics, and Optics, Particle detector, Nuclear physics, Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Borexino, Lepton
Abstract: This paper describes the main features of the proposed low energy solar neutrino detector Borexino, planned to be installed at the Gran Sasso Laboratory. This real time detector is based on a massive, calorimetric, liquid scintillation spectroscopy technique, whose high luminosity is the base for the attempt to achieve a low signal detection threshold. After a description of the main structural components of the detector, of its performances in term of spatial and energy resolution, and of the neutrino reactions occurring in the liquid scintillator, a description of the crucial background topic is given. Finally the main implications of the physics program of the experiment are briefly illustrated.
Published: 1993

16. Background measurements at Gran Sasso Laboratory

Author: C. Arpesella
Subjects: Physics, Nuclear and High Energy Physics, Atomic and Molecular Physics, and Optics
Published: 1992

17. Borexino: A real time detector for low energy solar neutrinos

Author: Sandip Pakvasa, Danilo Giugni, P. Ullucci, Stefano Bonetti, S. Bonetti, R. Tartaglig, M. Campanella, A. de Bari, S. Schoenert, E. Meroni, G. Bellini, J. Mitchell, D. Franciotti, P. Inzani, I. Manno, P. Raghavan, P. R. Trincherini, Francesco Ragusa, Marco Giammarchi, Martin Deutsch, T. Kovacs, R. I. Steinberg, A. Perotti, C. Arpesella, Gioacchino Ranucci, F. von Feilitzsch, R. S. Raghavan, G. Manuzio, G. Cecchet, and Alberto V. Donati
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, High energy, Low energy, Detection threshold, Solar neutrino, Detector, Neutrino, Atomic and Molecular Physics, and Optics, Borexino, Luminosity
Abstract: Silvia BONETTI University and INFN Milan, Via Celoria 16, 20133 Milan, Italy Borexino * , planned to operate in the Laboratori Nazionali del Gran is a future real time detector that, providing high luminosity, radiopurity and low energy threshold, will give unique information solar neutrinos specifically from the 7 Be source . + Borexino Collaboration : C . Ar esella',A . Donati l ,D . Franciotti l ,R . Tartagli l ,M . Deutsch2 ,F . Von Feilitz q ch3 ,S . Schoe ert 3 ,G . Manuzio 4 ,S . Pakvasa P . Trincherini 6 ,G . Bellini S . Bon~tti M . C~mpanella 7 ,M . Giammarchi 7 ,D . Giugni 7 ,P . Inzani 7 ,I . Manno ,E . Meroni F . Ragusa 7 ,G . Ranucci 7 ,p . Ullucci 7 ,T . hovacs 8 ,3 . Mitchell s ,P . Raghavana ,R .S . RaghavanB ,G . Cecchet 9 ,A . De Bari 9 ,A . Perotti 9 ,R . Steinbergl° 1 Laboratori Nazionali del Gran Sasso, 2 Massachusetts Inst . of Technology, 3 Technical Univ . Munich, ~Genova Univ . and INFN, Univ . of Hawaii at Minoa, 6 Euratom ISPRA, 7 M~lano Univ . and INFN, 8 AT&T Bell Lab ., Murray Hill, Pavia Univ . and INFN, ° Drexel Univ . Philadelphia 1 . INTRODUCTION The two experiments running from longtime' with the goal to measure the flux of neutrinos born inside the Sun have emphasized a puzzling situation : the detected flux is lower than the expected one, evaluated on the basis of the SSM, and the indication of a time-variation found by one of them, is not confirmed by the other . A decisive answer is expected from the two "Gallium" experiments 2 in the neutrino energy region . The neutrino high energy region, will be deeply investigated by the SuperKamiokande and SNO experiments, that are now in project . BOREXINO 3 is an experiment that has been conceived to perform a neutrino spectroscopy with the unique feature of a real-time sensitivity to the low energy 7 Be monochromatic solar source (E,=0.860 MeV) . Significative results are expected also in the 8 B region . The detector will provide high luminosity, low detection threshold and very " p-p" " 8 B"
Published: 1992

18. The liquid handling systems for the Borexino solar neutrino detector

Author: A. de Bellefon, R. von Hentig, S. Kidner, S. Parmeggiano, J. Maneira, A. Nelson, Danilo Giugni, W. Hampel, R. Eisenstein, G. Cecchet, A. Bevilacqua, Gunther Korschinek, T. A. Shutt, R. Fernholz, Mikael Hult, Elisa Resconi, An. Ianni, S. Gazzana, C. Arpesella, S. Hardy, R. Tartaglia, M. Parodi, Cristiano Galbiati, F. Soricelli, P. Risso, S. Vitale, A. E. Chavarria, K. McCarty, Nicomede Pelliccia, R. Cereseto, L. Perasso, E. Harding, C. Sule, Y. Suvorov, K. Jaenner, P. Saggese, Aldo Ianni, T. Lewke, A. Sotnikov, D. Kryn, Bryant Williams, C. Salvo, W. Maneschg, T. Goldbrunner, K. H. Schubeck, V. Vyrodov, Stefano Nisi, M. Goeger-Neff, M. Balata, G. Testera, Paolo Lombardi, F. Loeser, Margherita Buizza Avanzini, Laura Cadonati, L. Papp, M. Obolensky, Jay Burton Benziger, H. de Kerret, Y. Kozlov, A. M. Goretti, A.V. Etenko, C. Grieb, G. Heusser, M. Marchelli, G. Di Pietro, Lino Miramonti, Stefano Bonetti, D. Franco, M. D. Skorokhvatov, D. Bartolomei, A. Razeto, D. Manuzio, I. N. Machulin, D. Bondi, E. de Haas, A. Golubchikov, Fausto Ortica, Michael Wurm, R. Wordel, E. Litvinovich, M. Chen, V. G. Tarasenkov, R. Saldanha, Fausto Masetti, F. Siccardi, F. Dalnoki-Veress, Gioacchino Ranucci, Lothar Oberauer, R. Parsells, S. V. Sukhotin, Matthias Laubenstein, Marco Pallavicini, D. D'Angelo, O. Zaimidoroga, R. J. Ford, Frank Calaprice, T. Hagner, Marco Giammarchi, Martin Deutsch, S. Davini, F. Hartmann, Hardy Simgen, V. M. Gehman, V. V. Kobychev, Livia Ludhova, F. von Feilitzsch, Malcolm J. Joyce, Till Kirsten, A. S. Chepurnov, H.O. Back, C. Carraro, G. Bellini, Sandra Malvezzi, T. Hertrich, M. Orsini, E. Meroni, B. Loer, C. Hagner, D. Rountree, W. Czech, Gianluca Alimonti, Flavio Gatti, N. Gaertner, Ugo Mazzucato, L. Ioannucci, A. V. Derbin, Daniel McKinsey, A. Manco, A. Marternianov, Augusto Brigatti, R. B. Vogelaar, H. Neder, S. Schönert, W. Rau, Q. Meindl, L. Niedermeier, I. Manno, D. Vignaud, C. Lendvai, E. Guardincerri, G. Zuzel, Sandra Zavatarelli, G. Korga, K. Fomenko, Michael K.H. Leung, B. Freudiger, A. Di Credico, M. Misiaszek, P.H. La Marche, R. Scardaoni, B. Caccianiga, D. Schimizzi, D. Montanari, A. de Bari, A. A. Sabelnikov, V. N. Muratova, Fausto Elisei, S. Perasso, V. Lagomarsino, Aldo Romani, Paolo Musico, Marcin Wójcik, A. Cubaiu, J. Kiko, M. E. Monzani, A. Pocar, O. Smirnov, Andrew Sonnenschein, A. Di Ludovico, R. S. Raghavan, G. Manuzio, AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), APC - Neutrinos, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, Borexino, Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AstroParticule et Cosmologie (APC (UMR_7164)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, Alimonti, G., Suvorov, Y., and Et, Al.
Subjects: Nuclear and High Energy Physics, Low background detector, Liquid scintillator, [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Physics::Instrumentation and Detectors, Solar neutrino, Nuclear engineering, Radiopurity, Scintillator, 01 natural sciences, Nuclear physics, Physics::Fluid Dynamics, 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Instrumentation, Borexino, Nuclear and High Energy Physic, Physics, 010308 nuclear & particles physics, Modular system, Detector, Volumetric flow rate, [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Flow control (fluid), Neutrino detector, High Energy Physics::Experiment
Abstract: The successful deployment of the Borexino solar neutrino detector required assorted physical and chemical operations to produce exceptional pure fluids and fill multiple detector zones. The composition and flow rates of high purity gases and liquids had to be precisely controlled to maintain liquid levels and pressures. The system was required to meet exceptional requirements for cleanliness and leak-tightness. A large scale modular system connecting fluid receiving, purification and fluid delivery processes was developed for Borexino. At the core is a flow control system that delivers scintillator components to plants for purification, and then fills the Borexino detector volumes with ultrahigh purity buffer or ultrahigh purity scintillator. The liquid handling system maintains precise control over the liquid levels and differential pressures between the different volumes of the detectors that are separated by flexible nylon vessels. The preparation, commissioning and operation of the system for filling the Borexino detector with scintillator is described.
Published: 2009

19. The Borexino detector at the Laboratori Nazionali del Gran Sasso

Author: V. Vyrodov, D. Bondi, Malcolm J. Joyce, Laura Cadonati, T. Goldbrunner, T. Hertich, E. de Haas, O. Smirnov, F. von Feiltitsch, M. Misiaszek, W. Czech, Matthias Laubenstein, A. de Bellefon, A. Martemiano, W. Maneschg, Stefano Nisi, M. Marchelli, M. Parodi, Stefano Bonetti, D. Manuzio, Marco Pallavicini, V. M. Gehman, A. Alimonti, Augusto Brigatti, D. Bartolomei, Fausto Ortica, D. D'Angelo, Michael Wurm, Andrew Sonnenschein, I. Machulin, A. Bevilacqua, E. Litvinovich, P. Musico, G. Di Pietro, G. Testera, K. McCarty, R. von Hentig, A. Cubauu, M. Orsini, Sandra Malvezzi, M. E. Monzani, J. Benziger, P. Saggese, J. Kiko, Q. Meindl, S. Parmeggiano, D. Rountree, J. Maneira, A. Di Credico, B. William, Daniel McKinsey, A. Manco, V. Muratova, B. Caccianiga, P.H. La Marche, R. Scardaoni, Aldo Romani, F. Calaprice, L. Papp, B. Freudiger, Ugo Mazzucato, F. Soricelli, D. Vignaud, G. Ceccet, L. Niedermeier, Michael K.H. Leung, A. Pocar, H. Neder, S. Hardy, M. Goeger-Neff, T. A. Shutt, R. Fernholz, G. Manuzio, K. H. Schubeck, Till Kirsten, I. Manno, Cristiano Galbiati, C. Sule, Mikael Hult, A. Nelson, D. Loeser, Danilo Giugni, R. Ceresto, Hardy Simgen, D. Schimizzi, D. Franco, F. Dalnoki-Veress, R. Eisenstein, S. Gazzana, A. Chen, K. Fomenko, V. Lagomarsino, A. de Bari, D. Kryne, C. Carraro, K. Jaenner, S. Vital, R. Tartaglia, E. Harding, D. Montanari, M. Skorokhvatov, G. Bellini, A. A. Sabelnikov, C. Arpesella, R. B. Vogelaar, R. Wordel, S. Schönert, Lino Miramonti, A. Golubchikov, S. Kidner, T. Lewke, C. Lendvai, Martin Deutsch, G. Heusser, A. Derbin, Marcin Wójcik, C. Grieb, Elisa Resconi, E. Meroni, Andrea Ianni, Sandra Zavatarelli, Gioacchino Ranucci, R. S. Raghavan, H.O. Back, Fausto Elisei, G. Korga, R. Saldhana, Y. Suvorov, L. Oberauer, A. Sotnikov, G. Korschnik, M. Gärtner, A. E. Chavarria, L. Perasso, S. V. Sukhotin, V. V. Kobychev, M. Obolensky, H. de Kerret, G. Zuzel, Y. Kozlov, Fausto Masetti, Paolo Lombardi, A.V. Etenko, A. Goretti, Livia Ludhova, W. Hampel, A. S. Chepurnov, M. Balata, F. Siccardi, C. Salvo, B. Loer, C. Hagner, W. Rau, O. Zaimidoroga, P. Risso, F. Gattig, V. G. Tarasenkov, F. Hartmann, Nicomede Pelliccia, A. Razeto, A. Di Ldovico, R. J. Ford, Marco Giammarchi, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), APC - Neutrinos, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, Borexino, Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AstroParticule et Cosmologie (APC (UMR_7164)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Alimonti, G., Suvorov, Y., Et, Al., Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), and PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris
Subjects: Low background detector, Nuclear and High Energy Physics, Photomultiplier, Particle physics, Liquid scintillator, Physics - Instrumentation and Detectors, [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Physics::Instrumentation and Detectors, [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Solar neutrino, FOS: Physical sciences, Scintillator, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Astrophysics, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], High Energy Physics - Experiment (hep-ex), Low background detectors, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Instrumentation, Borexino, Nuclear and High Energy Physic, Physics, ICARUS, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Astrophysics (astro-ph), Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Instrumentation and Detectors (physics.ins-det), Liquid scintillators, [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], High Energy Physics::Experiment, Neutrino, Large Volume Detector
Abstract: Borexino, a large volume detector for low energy neutrino spectroscopy, is currently running underground at the Laboratori Nazionali del Gran Sasso, Italy. The main goal of the experiment is the real-time measurement of sub MeV solar neutrinos, and particularly of the mono energetic (862 keV) Be7 electron capture neutrinos, via neutrino-electron scattering in an ultra-pure liquid scintillator. This paper is mostly devoted to the description of the detector structure, the photomultipliers, the electronics, and the trigger and calibration systems. The real performance of the detector, which always meets, and sometimes exceeds, design expectations, is also shown. Some important aspects of the Borexino project, i.e. the fluid handling plants, the purification techniques and the filling procedures, are not covered in this paper and are, or will be, published elsewhere (see Introduction and Bibliography)., Comment: 37 pages, 43 figures, to be submitted to NIM
Published: 2009

20. Lifetime limits on (B-L)-violating nucleon decay and di-nucleon decay modes from the Fréjus experiment

Author: O. Perdereau, C. Paulot, J. Löffler, C. Boudarios, Peter Schleper, B. Kuznik, H. Mönch, L. Mosca, B. Dudelzack, D. Lalanne, H. J. Meyer, U. Nguyen-Khac, K. Daum, R. Barloutaud, C. Arpesella, G. Szklarz, Ch. Berger, P. Eschstruth, J. Ernwein, J. F. Glicenstein, James T. Becker, Richard Nisius, L. Moscoso, L. Behr, M. Fröhlich, G. Chardin, B. Jacobi, Frank Raupach, P. Bareyre, D. Blum, Wolfgang Rhode, A. Borg, S. Tisserant, Y. Wei, Michael Schubnell, Y. Benadjal, F. Laplanche, K.-H. Becker, Ph. Roy, B. Degrange, S. Jullian, C. Longemare, 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), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and FREJUS
Subjects: Semileptonic decay, Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Nuclear Theory, 7. Clean energy, 01 natural sciences, Delta baryon, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Nuclear physics, Particle decay, Pion, 0103 physical sciences, High Energy Physics::Experiment, Neutron, Nuclear Experiment, 010306 general physics, Nucleon, Radioactive decay
Abstract: The fully contained events recorded in the Frejus detector are used to search for (B-L)-violating nucleon decay and di-nucleon decay processes. No signal is found for a sensitivity of 2.0 kiloton year. The lower limits on the partial lifetime for the various nucleon decay modes range from 5.4×1030 yr for p→μ−π+K+ to 1.0×1032 yr for pn→e+n. We also quote limits on neutron and di-neutron decay into three and two neutrinos respectively.
Published: 1991

21. Results from the Fr�jus experiment on nucleon decay modes with charged leptons

Author: H. J. Daum, L. Moscoso, D. Blum, S. Tisserant, G. Chardin, J. Löffler, B. Jacobi, J. F. Glicenstein, Claire Bourdarios, Michael Schubnell, Ph. Roy, Peter Schleper, James T. Becker, Y. Benadjal, R. Möller, A. Borg, F. Laplanche, B. Kuznik, P. Wintgen, Frank Raupach, Ch. Berger, S. Jullian, L. Behr, P. Bareyre, D. Lalanne, H. Mönch, K.-H. Becker, C. Longuemare, H. J. Meyer, B. Degrange, C. Paulot, U. Nguyen-Khac, O. Perdereau, G. Szklarz, J. Ernwein, C. Arpesella, M. Fröhlich, R. Nisius, R. Barloutaud, P. Eschstruth, Y. Wei, L. Mosca, and B. Dudelzak
Subjects: Massless particle, Baryon, Nuclear physics, Physics, Particle physics, Particle decay, Muon, Physics and Astronomy (miscellaneous), Branching fraction, Neutrino, Nucleon, Engineering (miscellaneous), Lepton
Abstract: Lower limits on the nucleon lifetime in channels containing at least one positron or muon are given. The analysis is based on 4 years of data taking with the Frejus detector. Various approaches to determine the background from atmospheric neutrinos are discussed and two different nuclear models are used in event simulations. The limits obtained range from 1031 years forp→e + K *0 to 1.5·1032 years forp→e + K *0 to 1.5·1032 years forp→µ + γ.
Published: 1991

22. A new detector for solar neutrino

Author: A. Perotti, D. Krakauer, P. Raghavan, F. Ragusa, P. Ullucci, F. Arienti, G. Bellini, P. Benetti, Martin Deutsch, G. Cecchet, A. de Bari, I. Manno, Sandip Pakvasa, S. J. Freedman, C. E. Lane, P. Rothschild, M. Campanella, P. Inzani, Gioacchino Ranucci, E. Meroni, R.J. Steinberg, R. S. Raghavan, Alberto V. Donati, C. Arpesella, S. Bonetti, and J. Mitchell
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, Solar neutrino, Detector, Liquid scintillation counting, Solar neutrino problem, Atomic and Molecular Physics, and Optics, Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Neutrino oscillation
Abstract: The design of a new neutrino detector, Borex, is illustrated in this paper. The main experimental features of this detector along with its principal physical goals are thoroughly discussed. The key features of the liquid scintillation spectroscopy detection technique adopted in the design of the detector are deeply explained. The main advantages of this technique, i.s. high energy resolution, low detection threshold, ability to distinguish between different neutrino detection modes, background discrimination, make Borex a powerful and flexible experimental tool able to test and measure the flux, the flavor content, the energy spectrum, the antineutrino content of the solar neutrino flux arriving at Earth. Borex is thus equipped to probe completely the particle physics of solar neutrinos. Due to its characteristics, this experiment, planned to be carried out at the Gran Sasso Laboratory, is expected to be a fundamental step towardsthe solution of the solar neutrino problem.
Published: 1991

23. Experimental determination of υ background expected in the Fréjus nucleon decay detector

Author: G. Chardin, B. Jacobi, J. F. Glicenstein, Claire Bourdarios, S. Tisserant, R. Nisius, Ph. Roy, R. Barloutaud, P. Eschstruth, K.-H. Becker, James T. Becker, A. Borg, Y. Wei, G. Szklarz, Ch. Berger, P. Bareyre, B. Degrange, H. J. Daum, L. Moscoso, J. Ernwein, H. Mönch, C. Longuemare, L. Behr, M. Fröhlich, S. Jullian, Michael Schubnell, B. Dudelzak, B. Kuznik, Y. Benadjal, F. Laplanche, H. J. Meyer, D. Lalanne, U. Nguyen-Khac, O. Perdereau, D. Blum, C. Paulot, Peter Schleper, C. Arpesella, L. Mosca, W. Kolton, and Frank Raupach
Subjects: Semileptonic decay, Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, Physics::Instrumentation and Detectors, Elementary particle, Nuclear physics, Particle decay, High Energy Physics::Experiment, Neutrino, Nuclear Experiment, Nucleon, Instrumentation, Lepton, Background radiation
Abstract: We present an experimental estimate of the background due to atmospheric neutrino interactions in the Frejus underground nucleon decay experiment. The data of a CERN neutrino experiment of the Aachen-Padova collaboration are re-analyzed for this purpose. The large statistics available, some 60 kt yr of equivalent sensitivity, allows for a detailed topological study of most nucleon decay channels with a charged lepton.
Published: 1991

24. Looking for double beta decay of 150Nd to excited states of 150Sm by gamma ray spectroscopy

Author: L. Zanotti, C. Arpesella, N. Ferrari, and E. Bellotti
Subjects: Physics, Nuclear and High Energy Physics, Decay scheme, Analytical chemistry, Gamma ray, Atomic and Molecular Physics, and Optics, Semiconductor detector, Metal, Double beta decay, Excited state, visual_art, visual_art.visual_art_medium, Gamma spectroscopy, Atomic physics, Gamma energy
Abstract: We have measured the gamma ray activity of a sample of 6189 grams of metallic Neodimium with a germanium detector. From the gamma energy spectrum recorded during almost 6500 hours we extract lower limits for the halflife of the inclusive (0ν + 2ν) ββ decay of 150Nd to the first excited states of 150Sm : t12(0+ → 01+ > 1.0·1020, t12(O+ → 02+) > 2.0 · 102), t12(0+ → 21+) > 9.1 · 1019.
Published: 1999

25. Scintillator purification, detector performance and first results from Borexino

Author: Andrea Ianni, Sandra Zavatarelli, L. Papp, L. Niedermeier, Michael K.H. Leung, B. Caccianiga, D. Vignaud, S. V. Sukhotin, O. Zaimidoroga, R. Tartaglia, R. B. Vogelaar, A. Sotnikov, E. Meroni, S. Vitale, A.V. Etenko, Jay Burton Benziger, S. Hardy, S. Gazzana, Paolo Lombardi, S. Bonetti, Fausto Ortica, A. A. Sabelnikov, M. D. Skorokhvatov, C. Galbiati, Lothar Oberauer, I. N. Machulin, D. D'Angelo, M. Obolensky, Livia Ludhova, H. de Kerret, A. Razeto, G. Bellini, R. S. Raghavan, G. Manuzio, S. Schönert, A. Sonnenschein, B. Freudiger, R. J. Ford, Y. Suvorov, Lino Miramonti, L. Perasso, Marco Giammarchi, C. Grieb, M. Goeger-Neff, C. Arpesella, V. G. Tarasenkov, Martin Deutsch, C. Salvo, E. Litvinovich, Fausto Masetti, D. Franco, F. Dalnoki-Veress, Marcin Wójcik, Frank Calaprice, G. Korga, K. Fomenko, Marco Pallavicini, Hardy Simgen, G. Testera, F. von Feilitzsch, D. Kryn, Aldo Ianni, K. McCarty, A. M. Goretti, M. E. Monzani, A. Pocar, O. Smirnov, D. Montanari, Malcolm J. Joyce, M. Misiaszek, A. Martemianov, V. N. Muratova, G. Heusser, Gioacchino Ranucci, A. V. Derbin, G. Zuzel, Matthias Laubenstein, APC - Neutrinos, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Borexino, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Pallavicini, M., Bellini, G., Benziger, J., Bonetti, S., Caccianiga, B., Calaprice, F., Dalnoki-Veress, F., D'Angelo, D., de Kerret, H., Derbin, A., Etenko, A., Fomenko, K., Ford, R., Franco, D., Galbiati, C., Gazzana, S., Giammarchi, M., Goeger-Neff, M., Goretti, A., Grieb, C., Hardy, S., Heusser, G., Ianni, Aldo, Lanni, Andrea, Joyce, M., Korga, G., Kryn, D., Laubenstein, M., Leung, M., Litvinovich, E., Lombardi, P., Ludhova, L., Machulin, I., Manuzio, G., Masetti, F., Mccarty, K., Meroni, E., Miramonti, L., Misiaszek, M., Montanari, D., Monzani, M. E., Muratova, V., Niedermeier, L., Oberauer, L., Obolensky, M., Ortica, F., Papp, L., Perasso, L., Pocar, A., Raghavan, R. S., Ranucci, G., Razeto, A., Sabelnikov, A., Salvo, C., Schoenert, S., Simgen, H., Smirnov, O., Skorokhvatov, M., Sonnenschein, A., Sotnikov, A., Sukhotin, S., Suvorov, Y., Tarasenkov, V., Tartaglia, R., Testera, G., Vignaud, D., Vogelaar, R. B., von Feilitzsch, F., Wojcik, M., Zaimidoroga, O., Zavatarelli, S., and Zuzel, G.
Subjects: Physics, History, 010308 nuclear & particles physics, Solar neutrino, Detector, Scintillator, 01 natural sciences, 7. Clean energy, Computer Science Applications, Education, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Borexino
Abstract: International audience; The Borexino experiment has begun data taking in May 2007 after a long R&D work and preparation. The liquid scintillator purity exceeds even optimistic expectations, and the first detection of 7Be solar neutrinos has been possible after less than two months of data taking. This note shows briefly which are the main issues that were addressed in order to obtain such an extreme radiopurity, the detector performance and a few details concerning this first result.
Published: 2008

26. Direct Measurement of theBe7Solar Neutrino Flux with 192 Days of Borexino Data

Author: Danilo Giugni, S. Hardy, Martin Deutsch, A.V. Etenko, S. Manecki, T. Goldbrunner, G. Cecchet, T. Lewke, P. Risso, A. V. Derbin, M. D. Skorokhvatov, Michael Wurm, G. Zuzel, M. Balata, Andrew Sonnenschein, D. Rountree, G. Di Pietro, V. N. Muratova, Malcolm J. Joyce, Caren Hagner, C. Grieb, R. von Hentig, Ugo Mazzucato, R. B. Vogelaar, H. Neder, C. Salvo, A. Nelson, Fausto Elisei, Sandra Malvezzi, Stefano Bonetti, J. Maneira, I. Manno, G. Bellini, M. Goeger-Neff, M. Obolensky, C. Lendvai, Q. Meindl, G. Testera, H. de Kerret, Y. Suvorov, E. Litvinovich, An. Ianni, E. Harding, R. Eisenstein, T. A. Shutt, Matthias Laubenstein, A. E. Chavarria, R. Freudiger, A. Di Credico, G. Korga, K. Fomenko, M. Misiaszek, A. Sotnikov, G. Heusser, J. Benzinger, A. Brigatti, S. Calaprice, A. de Bellefon, R. S. Raghavan, D. Franco, F. Dalnoki-Veress, G. Manuzio, Sandra Zavatarelli, D. Vignaud, R. Tartaglia, Till Kirsten, D. Manuzio, F.X. Hartman, M. E. Monzani, S. Gazzana, C. Carraro, M. Chen, Henning O. Back, B. Loer, Livia Ludhova, Lino Miramonti, Gioacchino Ranucci, S. V. Sukhotin, O. Zaimidoroga, L. Candonati, A. M. Goretti, F. von Feilitzsch, M. Orsini, D. Schimizzi, E. Meroni, A. Pocar, Marco Pallavicini, S. Parrameggiano, D. D'Angelo, L. Papp, A. de Bari, W. Maneschg, V. V. Kobychev, Flavio Gatti, L. Paresso, O. Smirnov, P. LaMarche, T. Hertrich, Fausto Ortica, A. A. Sabelnikov, D. Kryn, C. Arpesella, Daniel McKinsey, Hardy Simgen, D. Montanari, L. Niedermeier, S. Schönert, Michael K.H. Leung, Lothar Oberauer, Fausto Masetti, Paolo Lombardi, B. Cacciangia, Marcin Wójcik, K. McCarty, Gunther Korschinek, R. Fernholz, R. Saldanha, R. J. Ford, Marco Giammarchi, Paolo Musico, V. Lagomarsino, Aldo Romani, Cristiano Galbiati, S. Vitale, I. Muchulin, Elisa Resconi, A. Razetto, J. Kiko, T. von Hentig, W. Hampel, and W. Rau
Subjects: Physics, Particle physics, Solar energetic particles, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Solar neutrino, General Physics and Astronomy, Flux, 01 natural sciences, Massless particle, Nuclear physics, Physics::Space Physics, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, High Energy Physics::Experiment, Neutrino, 010306 general physics, Neutrino oscillation, Borexino, Lepton
Abstract: We report the direct measurement of the 7Be solar neutrino signal rate performed with the Borexino detector at the Laboratori Nazionali del Gran Sasso. The interaction rate of the 0.862 MeV 7Be neutrinos is 49+/-3stat+/-4syst counts/(day.100 ton). The hypothesis of no oscillation for 7Be solar neutrinos is inconsistent with our measurement at the 4sigma C.L. Our result is the first direct measurement of the survival probability for solar nu(e) in the transition region between matter-enhanced and vacuum-driven oscillations. The measurement improves the experimental determination of the flux of 7Be, pp, and CNO solar nu(e), and the limit on the effective neutrino magnetic moment using solar neutrinos.
Published: 2008

27. New results on solar neutrino fluxes from 192 days of Borexino data

Author: M. Chen, S. V. Sukhotin, O. Zaimidoroga, D. Vignaud, M. D. Skorokhvatov, Michael Wurm, A. Nelson, C. Carraro, A. Martemianov, A. V. Derbin, M. Balata, V. V. Kobychev, R. Eisenstein, D. Manuzio, Augusto Brigatti, A. Razeto, T. Goldbrunner, Andrew Sonnenschein, E. Litvinovich, Sandra Malvezzi, T. Hertrich, C. Arpesella, P. Risso, Q. Meindl, Frank Calaprice, B. Freudiger, Hardy Simgen, S. Vitale, Matthias Laubenstein, Till Kirsten, A. Di Credico, F. Dalnoki-Veress, J. Maneira, Marco Pallavicini, Lino Miramonti, Gunther Korschinek, T. A. Shutt, R. Fernholz, M. E. Monzani, J. Kiko, Paolo Lombardi, Danilo Giugni, G. Heusser, R. Tartaglia, R. S. Raghavan, Aldo Ianni, A. Pocar, Fausto Masetti, G. Manuzio, M. Obolensky, M. Goeger-Neff, H. de Kerret, Y. Suvorov, Andrea Ianni, R. von Hentig, D. Kryn, Sandra Zavatarelli, Cristiano Galbiati, D. Schimizzi, Gioacchino Ranucci, S. Parmeggiano, A. de Bari, T. Lewke, Livia Ludhova, W. Maneschg, A. M. Goretti, D. Franco, H.O. Back, M. Orsini, E. Meroni, M. M. Wojcik, R. Saldanha, F. von Feilitzsch, S. Manecki, G. Bellini, C. Grieb, K. McCarty, A. A. Sabelnikov, A. Sotnikov, F.X. Hartman, P. LaMarche, R. J. Ford, S. Gazzana, G. Di Pietro, Flavio Gatti, Jay Burton Benziger, Marco Giammarchi, G. Testera, D. Montanari, S. Bonetti, C. Lendvai, A. de Bellefon, I. Manno, G. Korga, K. Fomenko, Laura Cadonati, O. Smirnov, L. Papp, Lothar Oberauer, G. Zuzel, V. N. Muratova, Fausto Ortica, Elisa Resconi, Fausto Elisei, S. Hardy, G. Cecchet, S. Schönert, W Rau, E. Harding, Martin Deutsch, A. E. Chavarria, L. Perasso, D. Rountree, Ugo Mazzucato, I. N. Machulin, R. B. Vogelaar, H. Neder, A.V. Etenko, D. D'Angelo, C. Salvo, Daniel McKinsey, L. Niedermeier, Michael K.H. Leung, B. Caccianiga, V. Lagomarsino, Aldo Romani, Malcolm J. Joyce, Caren Hagner, M. Misiaszek, B. Loer, W. Hampel, Paolo Musico, T. von Hentig, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), APC - Neutrinos, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, Borexino, Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AstroParticule et Cosmologie (APC (UMR_7164)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Galbiati, C., Arpesella, C., Back, H. O., Balata, M., Bellini, G., Benziger, J., Bonetti, S., Brigatti, A., Caccianiga, B., Cadonati, L., Calaprice, F., Carraro, C., Cecchet, G., Chavarria, A., Chen, M., Dalnoki-Veress, F., D'Angelo, D., de Bari, A., de Bellefon, A., de Kerret, H., Derbin, A., Deutsch, M., di Credico, A., di Pietro, G., Eisenstein, R., Elisei, F., Etenko, A., Fernholz, R., Fomenko, K., Ford, R., Franco, D., Freudiger, B., Gatti, F., Gazzana, S., Giammarchi, M., Giugni, D., Goeger-Neff, M., Goldbrunner, T., Goretti, A., Grieb, C., Hagner, C., Hampel, W., Harding, E., Hardy, S., Hartman, F. X., Hertrich, T., Heusser, G., Ianni, Aldo, Ianni, Andrea, Joyce, M., Kiko, J., Lonegren, Kirsten, Kobychev, V., Korga, G., Korschinek, G., Kryn, D., Lagomarsino, V., Lamarche, P., Laubenstein, M., Lendvai, C., Leung, M., Lewke, T., Litvinovich, E., Loer, B., Lombardi, P., Ludhova, L., Machulin, I., Malvezzi, S., Manecki, S., Maneira, J., Maneschg, W., Manno, I., Manuzio, D., Manuzio, G., Martemianova, A., Masetti, F., Mazzucato, U., Mccarty, K., Mckinsey, D., Meindl, Q., Meroni, E., Miramonti, L., Misiaszek, M., Montanari, D., Monzani, M. E., Muratova, V., Musico, P., Neder, H., Nelson, A., Niedermeier, L., Oberauer, L., Obolensky, M., Orsini, M., Ortica, F., Pallavicini, M., Papp, L., Parmeggiano, S., Perasso, L., Pocar, A., Raghavan, R. S., Ranucci, G., Rau, W., Razeto, A., Resconi, E., Risso, P., Romani, A., Rountree, D., Sabelnikov, A., Saldanha, R., Salvo, C., Schimizzi, D., Schoenert, S., Shutt, T., Simgen, H., Skorokhvatov, M., Smirnov, O., Sonnenschein, A., Sotnikov, A., Sukhotin, S., Suvorov, Y., Tartaglia, R., Testera, G., Vignaud, D., Vitale, S., Vogelaar, R. B., von Feilitzsch, F., von Hentig, R., von Hentig, T., Wojcik, M., Wurm, M., Zaimidoroga, O., Zavatarelli, S., Zuzel, G., Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), and Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
Subjects: History, Particle physics, Physics::Instrumentation and Detectors, Solar neutrino, 01 natural sciences, Education, Nuclear physics, SCINTILLATOR, 0103 physical sciences, OSCILLATIONS, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Astrophysics::Solar and Stellar Astrophysics, 010306 general physics, Neutrino oscillation, DETECTOR, Borexino, Physics, 010308 nuclear & particles physics, Oscillation, Solar neutrino problem, Computer Science Applications, Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, MATTER
Abstract: International audience; We report the direct measurement of the 7Be solar neutrino signal rate performed with the Borexino detector at the Laboratori Nazionali del Gran Sasso. The interaction rate of the 0.862 MeV 7Be neutrinos is 49±3stat±4syst counts/(day*100 ton). The hypothesis of no oscillation for 7Be solar neutrinos is inconsistent with our measurement at the 4σ C.L. Our result is the first direct measurement of the survival probability for solar νe in the transition region between matter-enhanced and vacuum-driven oscillations. The measurement improves the experimental determination of the flux of 7Be, pp, and CNO solar νe, and the limit on the effective neutrino magnetic moment using solar neutrinos
Published: 2008

28. Direct Measurement of the 7Be Solar Neutrino Flux with 192 Days of Borexino Data

Author: C, Arpesella, H O, Back, M, Balata, G, Bellini, J, Benziger, S, Bonetti, A, Brigatti, B, Caccianiga, L, Cadonati, F, Calaprice, C, Carraro, G, Cecchet, A, Chavarria, M, Chen, F, Dalnoki-Veress, D, D'Angelo, A, de Bari, A, de Bellefon, H, de Kerret, A, Derbin, M, Deutsch, A, di Credico, G, di Pietro, R, Eisenstein, F, Elisei, A, Etenko, R, Fernholz, K, Fomenko, R, Ford, D, Franco, B, Freudiger, C, Galbiati, F, Gatti, S, Gazzana, M, Giammarchi, D, Giugni, M, Goeger-Neff, T, Goldbrunner, A, Goretti, C, Grieb, C, Hagner, W, Hampel, E, Harding, S, Hardy, F X, Hartman, T, Hertrich, G, Heusser, Aldo, Ianni, Andrea, Ianni, M, Joyce, J, Kiko, T, Kirsten, V, Kobychev, G, Korga, G, Korschinek, D, Kryn, V, Lagomarsino, P, Lamarche, M, Laubenstein, C, Lendvai, M, Leung, T, Lewke, E, Litvinovich, B, Loer, P, Lombardi, L, Ludhova, I, Machulin, S, Malvezzi, S, Manecki, J, Maneira, W, Maneschg, I, Manno, D, Manuzio, G, Manuzio, A, Martemianov, F, Masetti, U, Mazzucato, K, McCarty, D, McKinsey, Q, Meindl, E, Meroni, L, Miramonti, M, Misiaszek, D, Montanari, M E, Monzani, V, Muratova, P, Musico, H, Neder, A, Nelson, L, Niedermeier, L, Oberauer, M, Obolensky, M, Orsini, F, Ortica, M, Pallavicini, L, Papp, S, Parmeggiano, L, Perasso, A, Pocar, R S, Raghavan, G, Ranucci, W, Rau, A, Razeto, E, Resconi, P, Risso, A, Romani, D, Rountree, A, Sabelnikov, R, Saldanha, C, Salvo, D, Schimizzi, S, Schönert, T, Shutt, H, Simgen, M, Skorokhvatov, O, Smirnov, A, Sonnenschein, A, Sotnikov, S, Sukhotin, Y, Suvorov, R, Tartaglia, G, Testera, D, Vignaud, S, Vitale, R B, Vogelaar, F, von Feilitzsch, R, von Hentig, T, von Hentig, M, Wojcik, M, Wurm, O, Zaimidoroga, S, Zavatarelli, G, Zuzel, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), APC - Neutrinos, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, Borexino, Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AstroParticule et Cosmologie (APC (UMR_7164)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), and PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris
Subjects: [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], Physics::Instrumentation and Detectors, [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], High Energy Physics::Phenomenology, Astrophysics::Solar and Stellar Astrophysics, High Energy Physics::Experiment, Nuclear Experiment
Abstract: We report the direct measurement of the 7Be solar neutrino signal rate performed with the Borexino detector at the Laboratori Nazionali del Gran Sasso. The interaction rate of the 0.862 MeV 7Be neutrinos is 49+/-3stat+/-4syst counts/(day.100 ton). The hypothesis of no oscillation for 7Be solar neutrinos is inconsistent with our measurement at the 4sigma C.L. Our result is the first direct measurement of the survival probability for solar nu(e) in the transition region between matter-enhanced and vacuum-driven oscillations. The measurement improves the experimental determination of the flux of 7Be, pp, and CNO solar nu(e), and the limit on the effective neutrino magnetic moment using solar neutrinos.
Published: 2008

29. A study of atmospheric neutrino oscillations in the Fréjus experiment

Author: Michael Schubnell, D. Lalanne, S. Jullian, James T. Becker, F. Laplanche, B. Dudelzak, Y. Wei, G. Szklarz, M. Fröhlich, H. J. Meyer, Ch. Berger, U. Nguyen-Khac, S. Tisserant, Richard Nisius, B. Degrange, C. Longuemare, O. Perdereau, H. Mönch, A. Borg, L. Behr, C. Paulot, R. Möller, J. Ernwein, H. J. Daum, L. Moscoso, K.-H. Becker, G. Chardin, B. Jacobi, Claire Bourdarios, Ph. Roy, D. Blum, J. F. Glicenstein, Frank Raupach, C. Arpesella, B. Kuznik, P. Bareye, R. Barloutaud, P. Eschstruth, and L. Mosca
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Muon, Measurements of neutrino speed, High Energy Physics::Experiment, Elementary particle, Electron, Neutrino, Neutrino oscillation, Charged current, Lepton
Abstract: Atmospheric neutrino interactions have been studied with the Frejus proton decay detector using a total fiducial sensitivity of 1.56 kT yr. The atmospheric neutrino interaction sample has been compared to a Monte Carlo simulation which includes neutrino oscillations. The v e ( v e ) ∌v μ , ( v μ ), v e ( v e ) ∌v τ v μ ( v μ ) ∌v τ ( v τ) oscillations channels have been studied using the ratio of electron to muon charged current events. Three independent analyses have been performed and no evidence for neutrino oscillations has been found. The resulting limits on Δm2 for maximal mixing are more restrictive by more than one order of magnitude with respect to earlier measurements.
Published: 1990

30. Borex: Solar neutrino experiment via weak neutral and charged currents in boron-11

Author: M. Deutsch, J. Kay, P. Rothschild, J. Mitchell, G. Cecchet, C. Cattadori, M. Campanella, M. Gallorini, T. Kovacs, R. S. Raghavan, A. Perotti, F. Ragusa, S. Bonetti, C. E. Lane, R. I. Steinberg, Alberto V. Donati, Gioacchino Ranucci, S. J. Freedman, P. Inzani, I. Manno, G. Bellini, E. Meroni, P. Raghavan, C. Arpesella, A. de Bari, and Sandip Pakvasa
Subjects: Physics, Particle physics, Neutral current, Physics::Instrumentation and Detectors, Solar neutrino, High Energy Physics::Phenomenology, Astronomy and Astrophysics, Solar neutrino problem, Massless particle, Nuclear physics, Neutrino detector, Space and Planetary Science, High Energy Physics::Experiment, Neutrino, Charged current, Lepton
Abstract: Borex, an experiment to observe solar neutrinos using boron-loaded liquid scintillation techniques, is being developed for operation at the Gran Sasso underground laboratory. It aims to observe the spectrum of electron type 8B solar neutrinos via charged current inverse β-decay of 11B and the total flux of solar neutrinos regardless of flavor by excitation of 11B via the weak neutral current.
Published: 1990

31. A search for high energy neutrinos from SN 1987A, the Carb, Hercules X-1, and Cygnus X-3 with the Fr�jus detector

Author: C. Arpesella, Ph. Roy, H. Mönch, C. Longuemare, P. Bareyre, R. Barloutaud, P. Eschstruth, C. Paulot, S. Tisserant, M. Fröhlich, G. Chardin, B. Jacobi, B. Kuznik, J. F. Glicenstein, R. Nisius, Claire Bourdarios, D. Blum, Ch. Berger, H. J. Meyer, H. J. Daum, K.-H. Becker, James T. Becker, L. Moscoso, L. Mosca, Michael Schubnell, B. Degrange, J. Ernwein, U. Nguyen-Khac, Y. Minet, A. Borg, O. Perdereau, Y. Wei, G. Szklarz, S. Jullian, B. Dudelzak, R. Möller, Y. Benadjal, F. Laplanche, L. Behr, D. Lalanne, and Frank Raupach
Subjects: Physics, Spectral index, Antiparticle, Physics and Astronomy (miscellaneous), High Energy Physics::Phenomenology, Astrophysics, Massless particle, Supernova, Antimatter, High Energy Physics::Experiment, Neutrino, Engineering (miscellaneous), Lepton, Bar (unit)
Abstract: With the Frejus detector we studied four astrophysical point-like sources by using$v_e (\bar v_e )$ and$v_\mu (\bar v_\mu )$ interactions in the detector and$v_\mu (\bar v_\mu )$ interactions in the surrounding rock. No excess of events was found. Therefore upper limits of neutrino fluxes and source luminositics are quoted. These limits confirm results from other experiments. In addition new limits are presented for spectral indices above 3.
Published: 1990

32. Search for neutron-antineutron oscillations in the Fréjus detector

Author: K.-H. Becker, B. Kuznik, Y. Benadjal, H. Mönch, S. Tisserant, B. Dudelzak, C. Arpesella, R. Nisius, M. Fröhlich, A. Borg, H. J. Meyer, H. J. Daum, L. Moscoso, P. Roy, L. Behr, G. Chardin, U. Nguyen-Khac, R. Möller, B. Jacobi, S. Jullian, O. Perdereau, James T. Becker, J. F. Glicenstein, Peter Schleper, Claire Bourdarios, C. Longuemare, Michael Schubnell, D. Lalanne, Frank Raupach, D. Blum, C. Paulot, B. Degrange, J. Ernwein, G. Szklarz, P. Bareyre, Y. Wei, F. Laplanche, R. Barloutaud, P. Eschstruth, L. Mosca, and Ch. Berger
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Antiparticle, Oscillation, Antimatter, Detector, Hadron, Neutron, Nucleon, Antineutron
Abstract: From the analysis of the fully contained events recorded in the underground Frejus detector, a lower limit of 1.2×108s at 90% CL is derived for the free neutron-antineutron oscillation time.
Published: 1990

33. Futher direct approaches to the nuclear reactions in the Sun

Author: U. GREIFE, C. ARPESELLA, E. BELLOTTI, K. BREND, C. BROGGINI, L. CAMPAJOLA, P. CORVISIERO, A. D'ONOFRIO, G. FIORENTINI, L. GIALANELLA, ROMANO, MARIO, U., Greife, C., Arpesella, E., Bellotti, K., Brend, C., Broggini, L., Campajola, P., Corvisiero, A., D'Onofrio, G., Fiorentini, L., Gialanella, and Romano, Mario
Published: 1997

34. Loss of 8Li recoil nuclei in 7Li(d,p)8Li and implications on the 7Be(p,γ )8B cross section

Author: R. Bonetti, E. Bellotti, A. Ordine, M. Dessalvi, Uwe Greife, M. Junker, F. Schümann, Mario R. Romano, L. Campajola, Oscar Straniero, Filippo Terrasi, C. Gustavino, Gyuri Gyürky, H. P. Trautvetter, Zs. Fülöp, Frank Strieder, G. Gervino, P. Corvisiero, Carlo Broggini, A. D'Alessandro, Sandra Zavatarelli, Antonio D'Onofrio, Vincenzo Roca, R.W. Kavanagh, C. Rolfs, Paolo Prati, E. Somorjai, Detlef Rogalla, A. Guglielmetti, A. Fubini, C. Arpesella, and L. Gialanella
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Cross section (physics), Recoil, Deuterium, Hadron, Nuclear fusion, Atomic physics, Trim
Abstract: The loss of 8Li recoil nuclei in 7Li(d,p)8Li has been measured using different backings and 7LiF target thicknesses as well as different deuteron energies. The results confirm essentially recent TRIM calculations. The losses are large (about 13%) for the combination of thin targets and heavy backings at Ed=0.80 MeV and increase with decreasing deuteron energy. The implications on the cross sections for 7Li(d,p)8Li and 7Be(p,γ)8B are discussed.
Published: 1998

35. Status of the LUNA experiment

Author: P. Corvisiero, H. P. Trautvetter, A. Zavatarelli, G. Gervino, D. Zahnow, F. Bartolucci, A. Fubini, Uwe Greife, M. Junker, Paolo Prati, C. Broggini, C. Gustavino, Giovanni Fiorentini, C. Rolfs, E. Bellotti, and C. Arpesella
Subjects: Physics, Nuclear and High Energy Physics, Calorimeter (particle physics), business.industry, Detector, Lower edge, Cosmic ray, Atomic and Molecular Physics, and Optics, Nuclear physics, High current, business, Event (particle physics), Thermal energy, Beam (structure)
Abstract: Luna is a pilot project initially focused on the 3He(3He, 2p)4He cross section measurement within the thermal energy region of the Sun (15–27 keV). A compact high current 50 kV ion accelerator facility including a windowless gas target system, a beam calorimeter and four detector telescopes has been built, tested and installed underground at Laboratori Nazionali del Gran Sasso. In these conditions, thanks to the cosmic ray suppression, we could attain a background level of less than 1 event per week, a rate similar to the one expected from 3He(3He, 2p)4He at the lower edge of the Sun thermal energy region.
Published: 1996

36. Search for ββ decay of 96Zr to excited states of 96Mo

Author: A. S. Barabash, C. Brofferio, Ettore Fiorini, V. I. Umatov, E. Bellotti, P.P. Sverzellati, and C. Arpesella
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Decay scheme, Double beta decay, Excited state, Atomic physics, Hpge detector, Beta decay, Atomic and Molecular Physics, and Optics
Abstract: We have performed an experimental study of double beta decay of 96Zr to excited states in 96Mo by means of a HPGe detector. New limits on the half-lives of these particular decays have been obtained, ranging between 2 × 1019 yr and 4 × 1019 yr (90%C.L.). In addition, the single beta decay half-life of 96Zr has been established to be ≥3.8 × 1019 yr. Preliminary results on 150Nd double beta decay to excited states in 150Sm are also reported.
Published: 1994

37. Measurements of extremely low radioactivity levels in BOREXINO

Author: C. Arpesella, H.O. Back, M. Balata, T. Beau, G. Bellini, J. Benziger, S. Bonetti, A. Brigatti, C. Buck, B. Caccianiga, L. Cadonati, F. Calaprice, G. Cecchet, M. Chen, O. Dadoun, D. D'Angelo, A. De Bari, A. de Bellefon, E. De Haas, H. de Kerret, A. Derbin, M. Deutsch, A. Di Credico, F. Elisei, A. Etenko, F. von Feilitzsch, R. Fernholz, R. Ford, D. Franco, B. Freudiger, C. Galbiati, F. Gatti, S. Gazzana, M.G. Giammarchi, D. Giugni, M. Göger-Neff, T. Goldbrunner, A. Golubchikov, A. Goretti, C. Grieb, C. Hagner, T. Hagner, W. Hampel, E. Harding, F.X. Hartmann, R. von Hentig, G. Heusser, M. Hult, A. Ianni, A.M. Ianni, J. Kiko, T. Kirsten, M. Köhler, G. Korga, G. Korschinek, Y. Kozlov, D. Kryn, P. LaMarche, M. Laubenstein, C. Lendvai, F. Loeser, P. Lombardi, K. McCarty, I. Machulin, S. Malvezzi, J. Maneira, I. Manno, G. Manuzio, A. Martemianov, F. Masetti, U. Mazzucato, E. Meroni, L. Miramonti, M.E. Monzani, P. Musico, H. Neder, L. Niedermeier, S. Nisi, L. Oberauer, M. Obolensky, F. Ortica, M. Pallavicini, L. Papp, L. Perasso, A. Pocar, R.S. Raghavan, G. Ranucci, W. Rau, A. Razeto, E. Resconi, T. Riedel, A. Sabelnikov, C. Salvo, R. Scardaoni, S. Schönert, K.H. Schuhbeck, T. Shutt, H. Simgen, A. Sonnenschein, O. Smirnov, A. Sotnikov, M. Skorokhvatov, S. Sukhotin, V. Tarasenkov, R. Tartaglia, G. Testera, P.R. Trincherini, V. Vyrodov, R.B. Vogelaar, D. Vignaud, S. Vitale, M. Wójcik, O. Zaimidoroga, and G. Zuzel
Subjects: Physics, Scintillation, Particle physics, Solar neutrino, radioactivity low level measurements, BOREXINO, Isotope, Physics::Instrumentation and Detectors, Settore FIS/01 - Fisica Sperimentale, FOS: Physical sciences, chemistry.chemical_element, Astronomy and Astrophysics, Germanium, Mass spectrometry, High Energy Physics - Experiment, Settore FIS/04 - Fisica Nucleare e Subnucleare, Nuclear physics, High Energy Physics - Experiment (hep-ex), chemistry, Atom, Borexino, Neutron activation
Abstract: The techniques researched, developed and applied towards the measurement of radioisotope concentrations at ultra-low levels in the real-time solar neutrino experiment BOREXINO at Gran Sasso are presented and illustrated with specific results of widespread interest. We report the use of low-level germanium gamma spectrometry, low-level miniaturized gas proportional counters and low background scintillation detectors developed in solar neutrino research. Each now sets records in its field. We additionally describe our techniques of radiochemical ultra-pure, few atom manipulations and extractions. Forefront measurements also result from the powerful combination of neutron activation and low-level counting. Finally, with our techniques and commercially available mass spectrometry and atomic absorption spectroscopy, new low-level detection limits for isotopes of interest are obtained., 27 pages, 5 figures. Submitted to Astroparticle Physics (17 Sep 2001). Spokesperson of the Borexino Collaboration: G. Bellini. Corresponding author: W. Hampel
Published: 2002

38. Measurements of internal radioactive contamination in samples of Roman lead to be used in experiments on rare events

Author: M. Pavan, Ezio Previtali, Ettore Fiorini, Oliviero Cremonesi, E. Orvini, A. Rotilio, A. Alessandrello, C. Brofferio, M. Perego, A. Nucciotti, E. Tatananni, B. Romualdi, C. Cattadori, S. Latorre, C. Bucci, L. Zanotti, S. Parmeggiano, G. Pessina, A. Giuliani, S. Pirro, and C Arpesella
Subjects: Nuclear and High Energy Physics, CUORE, Chemistry, Weakly interacting massive particles, Radioactive contamination, Radiochemistry, Rare events, Shields, Secular equilibrium, Contamination, Instrumentation, Neutron activation
Abstract: Improved results of a series of measurements carried out on two diAerent types of Roman lead to be used in shields for experiments on rare events are reported. The chemical impurities in both samples have been determined by neutron activation. Underground measurements based on c-spectroscopy on large masses of the two types of lead, show the absence in both samples of radioactive contamination from 214 Bi and 232 Th, in secular equilibrium, with upper limits of a few tenths of a mBq kg ˇ1 . The contamination from 40 K is less than a few mBq kg ˇ1 . Much care has been addressed to the contamination due to 210 Pb which breaks secular equilibrium and which contributes to most of the background in experiments searching low energy events like direct interactions of Weakly Interacting Massive Particles (WIMPS). We have applied to this problem the technique of cryogenic detection and found for the two samples upper limits for contamination of 210 Pb of 4 and 7 mBq kg ˇ1 , the lowest ever determined for any type of lead. ” 1998 Published by Else
Published: 1998

39. A large-scale low-background liquid scintillation detector: the counting test facility at Gran Sasso

Author: Augusto Brigatti, T. Hagner, Sandra Malvezzi, Marco Giammarchi, R. von Hentig, T. Goldbrunner, I. Manno, A. Garagiola, M. Deutsch, S Grabar, G. Cecchet, Danilo Giugni, R. Tartaglia, An. Ianni, O. Smirnov, A. Nostro, S. Bonetti, Paolo Lombardi, Stefano Nisi, G Bacchiocchi, G. Testera, A. Golubchikov, Lothar Oberauer, F. Loeser, A. Perotti, G. Heusser, Flavio Gatti, Matthias Laubenstein, A. M. Goretti, Jay Burton Benziger, Gioacchino Ranucci, P. Ullucci, A deBari, M. Balata, R. S. Raghavan, Cristiano Galbiati, G. Manuzio, E. Meroni, Gianluca Alimonti, S. Schoenert, S. Vitale, O. Zaimidoroga, G. Bellini, Fausto Elisei, Michael Johnson, R. Cavaletti, Anna Preda, Fausto Masetti, P Ruscitti, P Raghavan, N. Darnton, Elisa Resconi, C. Arpesella, M. L. Chen, F. Hartmann, J. Jochum, F. von Feilitzsch, R. B. Vogelaar, R. Scardaoni, Laura Cadonati, S. Magni, M. Neff, Ugo Mazzucato, and Frank Calaprice
Subjects: Physics, Nuclear and High Energy Physics, Photomultiplier, Stripping (chemistry), Physics::Instrumentation and Detectors, Solar neutrino, Liquid scintillation counting, Detector, chemistry.chemical_element, Uranium, Scintillator, Nuclear physics, chemistry, High Energy Physics::Experiment, Instrumentation, Borexino
Abstract: A 4.8 m3 unsegmented liquid scintillation detector at the underground Laboratori Nazionali del Gran Sasso has shown the feasibility of multi-ton low-background detectors operating to energies as low as 250 keV. Detector construction and the handling of large volumes of liquid scintillator to minimize the background are described. The scintillator, 1.5 g PPO/L-pseudocumene, is held in a flexible nylon vessel shielded by 1000 t of purified water. The active detector volume is viewed by 100 photomultipliers, which measure time and charge for each event, from which energy, position and pulse shape are deduced. On-line purification of the scintillator by water extraction, vacuum distillation and nitrogen stripping removed radioactive impurities. Upper limits were established of 14 C 12 C in the scintillator was shown to be approximately 10−18 by extending the energy window of the detector to 25–250 keV. The 14C abundance and uranium and thorium levels in the CTF are compatible with the Borexino Solar Neutrino Experiment.
Published: 1998

40. Radon measurements in the Gran Sasso Underground Laboratory

Author: P. Serra, R. Fresca Fantoni, G. Maltoni, L Lembo, C. Sartorio, S. Cecchini, E. Vilela, G. Giacomelli, G. Colombo, A. Bassignani, B. B. Bam, V. Togo, C Arpesella, L. Patrizii, G. Mandrioli, and H. Dekhissi
Subjects: Petroleum engineering, Epidemiology, Health, Toxicology and Mutagenesis, chemistry.chemical_element, Radon, Ventilation, law.invention, Fresh air, chemistry, Italy, law, Air Pollutants, Radioactive, Health physics, Air Pollution, Indoor, Occupational Exposure, Ventilation (architecture), Underground laboratory, Environmental science, Humans, Radiology, Nuclear Medicine and imaging, Laboratories
Abstract: Systematic radon monitoring in the Gran Sasso Underground Laboratory was performed in order to determine the background radon contribution to the sophisticated experimental apparatus and to check health physics standards for the personnel. As expected, the radon concentrations were found to depend strongly on the ventilation in the three experimental halls. Considerable reductions in the radon concentrations were obtained in 1993, when fresh air was drawn into the laboratory through a pipe and exhaust air was routed into the highway tunnel.
Published: 1997

41. Comparison between experimental and numerical determination of neutron-induced activation in low-activation materials

Author: J.-Ch. Sublet, C. Arpesella, Mario Pillon, Massimo Angelone, and R.A. Forrest
Subjects: Materials science, Nuclear engineering, Monte Carlo method, Induced radioactivity, Fusion power, chemistry.chemical_compound, chemistry, Neutron generator, Neutron flux, visual_art, Silicon carbide, Forensic engineering, visual_art.visual_art_medium, Neutron, Ceramic
Abstract: The need for studies of the activation of materials in the neutron fluxes encountered in D-T fusion devices has long been recognized as a key area of fusion technology programs. In this paper a comparison between experimental and numerical results of the induced radioactivity in a low activation material, the SiC/SiC fiber ceramic composite, is presented. The SiC/SiC fiber ceramic composite is a candidate material for the DEMO phase of a commercial fusion power station. This material was exposed to the neutron flux produced by a D-T neutron generator and the induced activity was carefully measured using the Low Background Counting Facility in the Gran Sasso laboratory. The neutron flux and spectra at the irradiation position have been determined using foil activation and numerical calculations with the Monte Carlo Code MCNP. These quantities have been used as input values for the activation code FISPACT and the cross section library EAF 4.1, to calculate the induced activity. The material composition and its impurities have been taken from existing data. The results of the comparison are discussed, focusing on the validation of the cross sections and the activity coming from the impurities.
Published: 1997

42. Further direct approaches to the nuclear reactions in the sun

Author: W.H. Schulte, H. Rebel, M. Romoli, Vincenzo Roca, Sandra Zavatarelli, Carlo Broggini, G. Oliviero, J. Lambert, E. Bellotti, Filippo Terrasi, Paolo Prati, Frank Strieder, Uwe Greife, D. Zahnow, Antonio D'Onofrio, A. Fubini, R.W. Kavanagh, G. Gervino, Lucio Gialanella, C. Gustavino, H. P. Trautvetter, L. Campajola, R. Kubat, C. Arpesella, S. Schmidt, Giovanni Fiorentini, W.S. Rodney, M. Junker, K. Brand, E. Huttel, C. Rolfs, P. Corvisiero, Mario R. Romano, Greife, U., Arpesella, C., Bellotti, E., Brand, K., Broggini, C., Campajola, L., Corvisiero, P., D'Onofrio, Antonio, Fiorentini, G., Fubini, A., Gervino, G., Gialanella, L., Gustavino, C., Huttel, E., Junker, M., Kavanagh, R. W., Kubat, R., Lambert, J., Oliviero, G., Prati, P., Rebel, H., Roca, V., Rodney, W. S., Rolfs, C., Romano, M., Romoli, M., Schmidt, S., Shulte, W. H., Strieder, F., Terrasi, Filippo, Trautvetter, H. P., Zahnow, D., and Zavatarelli, S.
Subjects: Physics, Nuclear reaction, Nuclear physics, Nuclear and High Energy Physics, Stars, Nucleosynthesis, Astrophysics::High Energy Astrophysical Phenomena, Nuclear fusion, Cosmic ray, Neutrino, Nuclear Experiment, Beam (structure)
Abstract: Nuclear fusion reactions play a key role in the understanding of energy production, neutrino emission and nucleosynthesis of the elements in stars. The direct measurement of the cross section of these reactions at the relevant energies is usually hampered by cosmic radiation, beam induced background and/or the radioactivity of the nuclei involved. The measurements are expected to be completed by fall 1996.
Published: 1997

43. Laboratory for underground nuclear astrophysics (LUNA): First results of the measurements of the reaction [sup 3]He([sup 3]He,2p)[sup 4]He at solar energies

Author: M. Junker, A. Fubini, D. Zahnow, W.S. Rodney, P. Prati, C. Rolfs, C. Gustavino, J. Lambert, E. Bellotti, Uwe Greife, C. Arpesella, P. Corvisiero, C. Broggini, H. P. Trautvetter, G. Gervino, S. Zavatarelli, and G. Fiorentini
Subjects: Physics, Nuclear reaction, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, Astrophysics::Instrumentation and Methods for Astrophysics, Coulomb barrier, Cosmic ray, Alpha particle, Plasma, Nuclear physics, Nuclear astrophysics, High Energy Physics::Experiment, Nuclear cross section, Nuclear Experiment
Abstract: A compact 50 kV accelerator facility has been installed in the underground laboratory of the Laboratori Nazionali del Gran Sasso (LNGS) in Italy in the framework of the LUNA—project. Because of the specially designed accelerator setup and the suppression of the cosmic ray background in the underground laboratory the sensitivity of the set up gives the possibility to measure the cross sections of nuclear reactions at energies far below the coulomb barrier, where cross sections are as low as a few fbarn. Currently the reaction 3He(3He,2p)4He, which is important for the Solar Neutrino Puzzle, is being investigated at energies relevant in our sun (E=15–27 keV). These are the first direct measurements of a nuclear cross section covering the whole thermal energy range of the solar plasma. This contribution reports on the measurements covering the energy range between E=20.7 keV and 25 keV.
Published: 1997

44. Activation measurements for the E.C. bulk shield benchmark experiment

Author: Mario Pillon, Maurizio Angelone, M. Martone, and C. Arpesella
Subjects: Nuclear physics, Physics, Neutron generator, Shield, Detector, Benchmark (computing), Underground laboratory, Hpge detector
Abstract: The use of the absolute radiometric techniques for the E. C. bulk shield experiment at the 14 MeV Frascati Neutron Generator (FNG) is reported. In this application, the activity level, in some cases, results too low to be measured at the Frascati counting station. In these cases the radiometric measurements are performed using the low background HPGe detectors located at the underground laboratory of Gran Sasso d'Italia. The use of these detectors enhances the FNG capability of performing bulk shield benchmark experiments allowing the measurements of very low activation levels.
Published: 1995

45. The LUNA project: Status and first results

Author: C. Arpesella, P. Corvisiero, G. Mezzorani, R.W. Kavanagh, W.S. Rodney, A. Lanza, H. P. Trautvetter, F. Gorris, G. Gervino, D. Zahnow, Giovanni Fiorentini, C. Rolfs, M. Junker, Paolo Prati, C. A. Barnes, A. Fubini, Uwe Greife, E. Bellotti, F. Bartolucci, C. Gustavino, W.H. Schulte, Carlo Broggini, Piero Quarati, Busso, M., Gallino, R., and Raiteri, C. M.
Subjects: Physics, Orders of magnitude (power), business.industry, Detector, Cosmic ray, Astronomy & Astrophysics, Calorimeter, Nuclear physics, Astronomy & Astrophysics, Physics, Nuclear, business, Sensitivity (electronics), Event (particle physics), Beam (structure), Thermal energy
Abstract: LUNA is a pilot project initially focused on the ^3He(^3He,^2p)^4He cross section measurement within the thermal energy region of the Sun (15–27 KeV). A compact high current 50 KV ion accelerator facility including a windowless gas target system, a beam calorimeter, and four detector telescopes has been built, tested, and installed underground at the Laboratori Nazionali del Gran Sasso. The sensitivity has been improved by more than four orders of magnitude, as compared to the previous experiment. In particular, thanks to the cosmic ray suppression, we could attain a background level of less than 1 event per week, a rate similar to the one expected from ^3He(^3He,^2p)^4He at the lower edge of the Sun thermal energy region.
Published: 1995

46. A Monte Carlo code for nuclear astrophysics experiments

Author: Carlo Broggini, C. Arpesella, Uwe Greife, A. Lanza, C. Rolfs, G. Gervino, E. Bellotti, S. Fubini, Paolo Prati, C. Gustavino, D. Zahnow, Sandra Zavatarelli, M. Junker, and P. Corvisiero
Subjects: Physics, Nuclear and High Energy Physics, Physics::Medical Physics, Frame (networking), Astrophysics::Instrumentation and Methods for Astrophysics, Nuclear physics, Deuterium, Monte carlo code, Nuclear astrophysics, Code (cryptography), Nuclear Experiment, Instrumentation, Ion energy, Doppler broadening
Abstract: A Monte Carlo code, suited for nuclear astrophysics experiments, is described. The code has been developed in the frame of the LUNA pilot project at the Laboratori Nazionali del Gran Sasso. An accurate evaluation of ion energy and angular straggling, and Doppler broadening has been implemented, which are important at subCoulomb energies. The considered effects are compared with experimental data.
Published: 1995

47. Study of atmospheric neutrino interactions with the Fréjus detector

Author: B. Kuznik, Frank Raupach, D. Lalanne, G. Szklarz, R. Möller, B. Seyffert, Ch. Berger, S. Demski, C. Longuemare, L. Behr, M. Fröhlich, J. F. Glicenstein, S. Jullian, D. Blum, L. Mosca, O. Perdereau, A. Borg, R. Mayer, P. Bareyre, S. Tisserant, H. Mönch, Y. Wei, B. Degrange, C. Arpesella, Michael Schubnell, U. Nguyen-Khac, James T. Becker, K.-H. Becker, C. Paulot, Y. Benadjal, F. Laplanche, P. Wintgen, H. J. Daum, L. Moscoso, Peter Schleper, J. Ernwein, H. Meyer, R. Barloutaud, P. Eschstruth, B. Dudelzak, Ph. Roy, G. Chardin, B. Jacobi, Claire Bourdarios, and Richard Nisius
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, High Energy Physics::Phenomenology, Solar neutrino problem, Nuclear physics, Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Neutrino oscillation, Lepton
Abstract: We present an analysis of the neutrino event sample recorded in the Frejus experiment. This sample which corresponds to the 1.56 kt yr final sensitivity of the experiment is compared to the predictions of a Monte Carlo neutrino simulation program. It is based on a recent calculation of the atmospheric neutrino flux at the Frejus latitude which takes into account muon polarization effects. The comparison is performed on the distributions of the visible energy, the zenith angle and the neutrino flavor. Good agreement is obtained between the data and the simulation within statistics.
Published: 1989

48. Results from the Fréjus experiment for nucleon decay modes into anti-neutrino + meson

Author: F. Laplanche, R. Barloutaud, Michael Schubnell, O. Perdereau, B. Dudelzak, B. Kuznik, M. Fröhlich, Y. Wei, Y. Benadjal, Ch. Berger, R. Möller, James T. Becker, R. Nisius, B. Degrange, R. Mayer, Y. Minet, A. Borg, L. Behr, D. Blum, C. Paulot, C. Longuemare, B. Seyffert, S. Demski, S. Jullian, H. Mönch, P. Roy, C. Arpesella, D. Lalanne, K.-H. Becker, S. Tisserant, Frank Raupach, P. Bareyre, G. Szklarz, H. J. Meyer, L. Mosca, J. Ernwein, P. Wintgen, U. Nguyen-Khac, Peter Schleper, H. J. Daum, L. Moscoso, P. Serri, P. Eschstruth, G. Chardin, B. Jacobi, J. F. Glicenstein, and Claire Bourdarios
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Meson, High Energy Physics::Experiment, Ton, Neutrino, Nucleon, Calorimeter
Abstract: With the Frejus 900 ton calorimeter (550 ton fiducial), a search for nucleon decay events into anti-neutrino plus meson has been performed. No signal is found for a sensitivity of 1.3 kiloton × year. Lower lifetime limits for various decay modes range from 0.9 to 2.9 10 31 years (at 90% C.L.).
Published: 1989

49. A review of running underground experiments

Author: C. Arpesella
Subjects: Physics, Nuclear and High Energy Physics, business.industry, ComputerSystemsOrganization_SPECIAL-PURPOSEANDAPPLICATION-BASEDSYSTEMS, Aerospace engineering, business, Instrumentation, GeneralLiterature_MISCELLANEOUS
Abstract: A summary of all experiments with underground detectors would require an entire book to be exhaustive. In this short and necessarily incomplete review, I will try to present some of the latest results of the experiments which are located deep underground.
Published: 1989

50. Search for muons from the direction of Cygnus X-3

Author: S. Demski, R. Hinners, G. Szklarz, W. Kolton, J. Peters, D. Lalanne, R. Tripp, C. Longuemare, L. Moscoso, D. Ortmann, Peter Schleper, B. Pietrzyk, S. Tisserant, M. Schubnell, U. Nguyen-Khac, C. Paulot, L. Mosca, Ph. Roy, D.L. Edmunds, P. Wintgen, L. Behr, R. W. Bland, Ch. Berger, R. Mayer, J. Tutas, J. Ernwein, B. Kuznik, Frank Raupach, L. Di Ciaccio, G. Chardin, K.-H. Becker, F. Laplanche, R. Barloutaud, P. Eschtruth, S. Jullian, Y. Wei, B. Degrange, Y. Benadjal, H. Meyer, A. Hofmann, B. Dudelzak, P. Bareyre, G. Deuzet, Bert Voigtländer, M. A. Jabiol, C. Arpesella, G. Gerbier, P. Serri, G. Schmitz, W. Kohrs, H. J. Daum, J. Thierjung, Laboratoire de l'Accélérateur Linéaire (LAL), 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: Physics, Nuclear and High Energy Physics, Muon, 010308 nuclear & particles physics, Detector, Phase (waves), Flux, Astrophysics, 01 natural sciences, Nuclear physics, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Overburden, 0103 physical sciences, Muon flux, 010306 general physics, Nucleon, Half angle
Abstract: We have analyzed muons and multimuons detected in the Frejus underground nucleon decay detector between February 1984 and June 1986. No excess events are observed in the direction of Cygnus X-3, which yields a 90 % confidence level upper flux limit of 0.7 10-12 cm-2 s-1, for an average rock overburden of 5000 hg cm-2 corresponding to energies > 3 TeV. Using the 4.79 hour periodicity of Cygnus X-3, no signal is found in any phase interval.
Published: 1986

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Publication Type

Journal

Database

Publisher

55 results on '"C. Arpesella"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources