Search

Your search keyword '"Benziger, J."' showing total 6 results
Start Over Author "Benziger, J." Region gran sasso d'italia (italy)
6 results on '"Benziger, J."'

1. Solar neutrino results from Borexino and main future perspectives

Author

Pallavicini, Marco, Bellini, G., Benziger, J., Bonetti, S., Buizza Avanzini, M., Caccianiga, B., Cadonati, L., Calaprice, F., Carraro, C., Chavarria, A., Dalnoki-Veress, F., D’Angelo, D., de Kerret, H., Davini, S., Derbin, A., Etenko, A., Fomenko, K., Franco, D., Galbiati, C., and Gazzana, S.

Subjects
*SOLAR neutrinos, *LIQUID scintillators, *RADIOACTIVITY, *NEUTRON flux, *ELECTRONS, *PHYSICS experiments
Abstract

Abstract: Borexino is a solar neutrino experiment running at the Laboratori Nazionali del Gran Sasso, Italy. The radioactive background levels in the liquid scintillator target meet or even exceed design goals, opening unanticipated opportunities. The main results, so far, are the measurement of the 7Be solar neutrino flux (the first ever done) and the measurement of the 8B neutrino flux performed with electron energy threshold of 2.8MeV. The short and medium term perspectives are summarized in the conclusions. [Copyright &y& Elsevier]

Published
2011
Full Text
View/download PDF

2. Lifetimes of 214Po and 212Po measured with Counting Test Facility at Gran Sasso National Laboratory.

Author

Miramonti, L., Bellini, G., Benziger, J., Bick, D., Bonfini, G., Bravo, D., Buizza Avanzini, M., Caccianiga, B., Cadonati, L., Calaprice, F., Carraro, C., Cavalcante, P., Chavarria, A., Chubakov, V., D'Angelo, D., Davini, S., Derbin, A., Etenko, A., Fomenko, K., and Franco, D.

Subjects
*POLONIUM isotopes, *LEAD isotopes, *BISMUTH isotopes, *RADIOACTIVE decay
Abstract

The decays of 214 Po into 210 Pb and of 212 Po into 208 Pb tagged by the previous decays from 214 Bi and 212 Bi have been studied inserting quartz vials inside the Counting Test Facility (CTF) at the underground laboratory in Gran Sasso (LNGS). We find that the mean lifetime of 214 Po is (236.00 ± 0.42(stat) ± 0.15(syst)) μs and that of 212 Po is (425.1 ± 0.9(stat) ± 1.2(syst)) ns. Our results are compatible with previous measurements, have a much better signal to background ratio, and reduce the overall uncertainties. [ABSTRACT FROM AUTHOR]

Published
2014
Full Text
View/download PDF

3. Recent results and future development of Borexino.

Author

Pallavicini, M., Bellini, G., Benziger, J., Bick, D., Bonfini, G., Bravo, D., Buizza Avanzini, M., Caccianiga, B., Cadonati, L., Calaprice, F., Carraro, C., Cavalcante, P., Chavarria, A., DʼAngelo, D., Davini, S., Derbin, A., Etenko, A., Fomenko, K., Franco, D., and Galbiati, C.

Subjects
*LIQUID scintillators, *NEUTRINO detectors, *SOLAR neutrinos, *NUCLEAR energy, *NUCLEAR research
Abstract

Abstract: This paper summarizes the main recent results of the Borexino experiment, a liquid scintillator neutrino detector of unprecedented radiopurity currently running at the Laboratori Nazionali del Gran Sasso in Italy. Particularly, the paper is focused on the precision measurement of the 7Be solar neutrino flux, on the search of its day–night modulation, and on the first detection of pep neutrinos. The paper also covers a recent measurement of the CNGS neutrinos speed made in May 2012. A short discussion about the forthcoming scientific program on solar neutrinos, geoneutrinos, and sterile neutrino searches is included at the end. [Copyright &y& Elsevier]

Published
2013
Full Text
View/download PDF

4. 200 days of Borexino data

Author

Ludhova, L., Bellini, G., Benziger, J., Bonetti, S., Buizza Avanzini, M., Caccianiga, B., Cadonati, L., Calaprice, F., Carraro, C., Chavarria, A., Dalnoki-Veress, F., D'Angelo, D., de Kerret, H., Derbin, A., Etenko, A., Fomenko, K., Franco, D., Galbiati, C., Gazzana, S., and Giammarchi, M.

Subjects
*SCINTILLATION counters, *LIQUID scintillators, *MASS (Physics), *SOLAR neutrinos, *PHYSICS experiments, *DIPOLE moments
Abstract

Borexino is a large-volume liquid scintillator detector placed in the underground halls of the Laboratori Nazionali del Gran Sasso in Italy. After several years of construction, data taking started in May 2007, providing immediately incontrovertible evidence of the unprecedented radiopurity of the target mass. Here we report on the newest Borexino results obtained with about 200 days of data. Borexino provides the first direct measurement of the solar neutrino survival probability in both vacuum-dominated and matter-enhanced regions provided by a single experiment. The interaction rate of the 0.862 MeV 7Be solar neutrinos is found to be counts/(day⋅100 tons), in agreement with the oscillation hypothesis in the MSW Large Mixing Angle scenario. The first real-time measurement of the 8B solar neutrinos above 2.8 MeV provides interaction rate of counts/(day⋅100 tons). These measurements improve the experimental determination of the flux of the pp and CNO solar neutrinos, and the limit on the effective magnetic moment using solar neutrinos. [Copyright &y& Elsevier]

Published
2009
Full Text
View/download PDF

5. Solar neutrino results from Borexino.

Author

Franco, D., Bellini, G., Benziger, J., Bick, D., Bonfini, G., Bravo, D., Buizza Avanzini, M., Caccianiga, B., Cadonati, L., Calaprice, F., Carraro, C., Cavalcante, P., Chavarria, A., DʼAngelo, D., Davini, S., Derbin, A., Etenko, A., Fomenko, K., Galbiati, C., and Gazzana, S.

Subjects
*SOLAR neutrinos, *LIQUID scintillators, *NEUTRINO detectors, *NEUTRINO interactions, *NEUTRINO oscillation
Abstract

Abstract: Borexino is a large-volume liquid scintillator experiment for low energy neutrino detection, operating since May 2007, and installed at the National Laboratory of Gran Sasso. Borexino is the first experiment able to observe in real-time Solar neutrino interactions also in the sub-MeV range. We report with this work the main results achieved in the Solar neutrino sector by Borexino. In particular, we report the results on the measured interaction rates of 7Be, 8B, and pep neutrinos, and their impacts on the physics of neutrino oscillations. [Copyright &y& Elsevier]

Published
2013
Full Text
View/download PDF

6. Neutrino interactions at few MeV: results from Borexino at Gran Sasso

Author

Perasso, Laura, Bellini, G., Bonetti, S., Buizza Avanzini, M., Caccianiga, B., DʼAngelo, D., Franco, D., Giammarchi, M., Koshio, Y., Lombardi, P., Ludhova, L., Meroni, E., Miramonti, L., Ranucci, G., Re, A., Benziger, J., Cadonati, L., Pocar, A., Calaprice, F., and Chavarria, A.

Subjects
*NEUTRINO interactions, *SOLAR neutrinos, *SOLAR radiation, *DETECTORS, *PHYSICS experiments
Abstract

Borexino, at the I.N.F.N. Gran Sasso Underground Laboratory in Italy, is an experiment designed to detect, in real-time, low energy solar neutrinos. After a brief presentation of the Borexino physics and detector, we illustrate some recent results and their physics implications. Borexino perspectives are also discussed. [ABSTRACT FROM AUTHOR]

Published
2011
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results