Record link: 
http://hdl.handle.net/20.500.12708/155833
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Title: 
High-accuracy determination of the neutron flux at n_TOF
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Citation: 
Barbagallo, M., Guerrero, C., Tsinganis, A., Tarrio, D., Alstadt, S. G., Andriamonje, S., Andrzejewski, J., Audouin, L., Bécares, V., Becvar, F., Belloni, F., Berthoumieux, E., Billowes, J., Boccone, V., Bosnar, D., Brugger, M., Calviani, M., Calviño, F., Cano-Ott, D., … Žugec, P. (2013). High-accuracy determination of the neutron flux at n_TOF. The European Physical Journal A, 49(156). https://doi.org/10.1140/epja/i2013-13156-x
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Publisher DOI: 
10.1140/epja/i2013-13156-x
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Publication Type: 
Article - Original Research Article
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Language: 
English
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Authors: 
Barbagallo, Massimo 
Guerrero, C. 
Tsinganis, Andrea 
Tarrio, D. 
Alstadt, Sebastian G. 
Andriamonje, S. 
Andrzejewski, J. 
Audouin, L. 
Bécares, V. 
Becvar, F. 
Belloni, F. 
Berthoumieux, Eric 
Billowes, J. 
Boccone, V. 
Bosnar, D. 
Brugger, M. 
Calviani, M. 
Calviño, F. 
Cano-Ott, Daniel 
Griesmayer, Erich 
Jericha, Erwin 
Leeb, Helmut 
Žugec, P. 
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Organisational Unit: 
E141-04 - Forschungsbereich Neutron- and Quantum Physics 
E141 - Atominstitut 
E141-03 - Forschungsbereich Nuclear and Particle Physics 
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Journal: 
The European Physical Journal A 
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ISSN: 
1434-6001
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Date (published): 
18-Dec-2013
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Number of Pages: 
11
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Publisher: 
SPRINGER
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Peer reviewed: 
Yes
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Keywords: 
Nuclear and High Energy Physics
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Abstract: 
The neutron flux of the n_TOF facility at CERN was measured, after installation of the new spallation target, with four different systems based on three neutron-converting reactions, which represent accepted cross sections standards in different energy regions. A careful comparison and combination of the different measurements allowed us to reach an unprecedented accuracy on the energy dependence of the neutron flux in the very wide range (thermal to 1 GeV) that characterizes the n_TOF neutron beam. This is a pre-requisite for the high accuracy of cross section measurements at n TOF. An unexpected anomaly in the neutron-induced fission cross section of ²³⁵U is observed in the energy region between 10 and 30 keV, hinting at a possible overestimation of this important cross section, well above currently assigned uncertainties.
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Research Areas: 
Special and Engineering Materials: 40%
Design and Engineering of Quantum Systems: 30%
Modelling and Simulation: 30%
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Science Branch: 
Physik, Mechanik, Astronomie
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