Cosmogenic neutron production at the Sudbury Neutrino Observatory

Neutrons produced in nuclear interactions initiated by cosmic-ray muons present an irreducible background to many rare-event searches, even in detectors located deep underground. Models for the production of these neutrons have been tested against previous experimental data, but the extrapolation to...

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Main Authors: Aharmim, Bassam (Author) , Ahmed, S. N. (Author) , Anthony, A. E. (Author) , Barros, N. (Author) , Beier, E.  W. (Author) , Bellerive, A. (Author) , Beltran, B. (Author) , Bergevin, M. (Author) , Biller, S. D. (Author) , Bonventre, R. (Author) , Boudjemline, K. (Author) , Boulay, M. G. (Author) , Cai, B. (Author) , Callaghan, E. J. (Author) , Caravaca, J. (Author) , Chan, Y. D. (Author) , Chauhan, D. (Author) , Chen, M. (Author) , Cleveland, B. T. (Author) , Cox, G. A. (Author) , Curley, R. (Author) , Dai, X. (Author) , Deng, H. (Author) , Descamps, F. B. (Author) , Detwiler, J. A. (Author) , Doe, P. J. (Author) , Doucas, G. (Author) , Drouin, P.-L. (Author) , Dunford, Monica (Author) , Zuber, Kai (Author)
Corporate Author: SNO Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 12 December 2019
In: Physical review
Year: 2019, Volume: 100, Issue: 11
ISSN:2470-0029
DOI:10.1103/PhysRevD.100.112005
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevD.100.112005
Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.100.112005
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Author Notes:B. Aharmim, S.N. Ahmed, A.E. Anthony, N. Barros, E.W. Beier, A. Bellerive, B. Beltran, M. Bergevin, S.D. Biller, R. Bonventre, K. Boudjemline, M.G. Boulay, B.Cai, E. J. Callaghan, J. Caravaca, Y.D. Chan, D. Chauhan, M. Chen, B.T. Cleveland, G. A. Cox, R. Curley, X. Dai, H. Deng, F.B. Descamps, J.A. Detwiler, P.J. Doe, G. Doucas, P.-L. Drouin, M. Dunford, S.R. Elliott, H.C. Evans, G.T. Ewan, J. Farine, H. Fergani, F. Fleurot, R.J. Ford, J.A. Formaggio, N. Gagnon, K. Gilje, J. TM. Goon, K. Graham, E. Guillian, S. Habib, R.L. Hahn, A.L. Hallin, E.D. Hallman, P.J. Harvey, R. Hazama, W.J. Heintzelman, J. Heise, R.L. Helmer, A.Hime, C. Howard, M. Huang, P. Jagam, B. Jamieson, N.A. Jelley, M. Jerkins, C. Kéfélian, K.J. Keeter, J.R. Klein, L.L. Kormos, M. Kos, A. Krüger, C. Kraus, C.B. Krauss, T. Kutter, C.C.M. Kyba, B.J. Land, R. Lange, J. Law, I.T. Lawson, K.T. Lesko, J.R. Leslie, I. Levine, J.C. Loach, R. MacLellan, S. Majerus, H.B. Mak, J. Maneira, R.D. Martin, A. Mastbaum, N. McCauley, A.B. McDonald, S.R. McGee, M.L. Miller, B. Monreal, J. Monroe, B.G. Nickel, A.J. Noble, H.M. O’Keeffe, N.S. Oblath, C.E. Okada, R.W. Ollerhead, G.D. Orebi Gann, S.M. Oser, R.A. Ott, S.J.M. Peeters, A.W.P. Poon, G. Prior, S.D. Reitzner, K. Rielage, B.C. Robertson, R.G.H. Robertson, M.H. Schwendener, J.A. Secrest, S.R. Seibert, O. Simard, D. Sinclair, P. Skensved, T.J. Sonley, L.C. Stonehill, G. Tešić, N. Tolich, T. Tsui, R. Van Berg, B.A. VanDevender, C.J. Virtue, B.L. Wall, D. Waller, H. Wan Chan Tseung, D.L. Wark, J. Wendland, N. West, J.F. Wilkerson, J.R. Wilson, T. Winchester, A. Wright, M. Yeh, F. Zhang, K. Zuber (SNO Collaboration)
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Summary:Neutrons produced in nuclear interactions initiated by cosmic-ray muons present an irreducible background to many rare-event searches, even in detectors located deep underground. Models for the production of these neutrons have been tested against previous experimental data, but the extrapolation to deeper sites is not well understood. Here we report results from an analysis of cosmogenically produced neutrons at the Sudbury Neutrino Observatory. A specific set of observables are presented, which can be used to benchmark the validity of geant4 physics models. In addition, the cosmogenic neutron yield, in units of 10−4 cm2/(g⋅μ), is measured to be 7.28±0.09(stat)+1.59−1.12(syst) in pure heavy water and 7.30±0.07(stat)+1.40−1.02(syst) in NaCl-loaded heavy water. These results provide unique insights into this potential background source for experiments at SNOLAB.
Item Description:Gesehen am 14.08.2020
Physical Description:Online Resource
ISSN:2470-0029
DOI:10.1103/PhysRevD.100.112005