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Author(s)
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Lorusso, G ; Abbondanno, U ; Aerts, G ; Alvarez-Pol, H ; Alvarez-Velarde, F ; Andriamonje, Samuel A ; Andrzejewski, J ; Angelopoulos, Angelos ; Assimakopoulos, P A ; Badurek, G ; Baumann, P ; Becvar, F ; Benlliure, J ; Berthomieux, E ; Bisceglie, E ; Coceva, C ; Calvino, P ; Cano-Ott, D ; Capote, R ; Cennini, P ; Chepel, V Yu ; Chiaveri, Enrico ; Colonna, N ; Cortés, G ; Cortina-Gil, D ; Couture, A ; Cox, J ; Dababneh, S ; Dahlfors, M ; David, S ; Dolfini, R ; Domingo-Pardo, C ; Durán, I ; Eleftheriadis, C ; Embid-Segura, M ; Ferrant, L ; Ferrari, A ; Ferreira-Marques, R ; Frais-Kölbl, H ; Furman, W I ; Gonçalves, I F ; González-Romero, E M ; Goverdovski, A A (Institute of Physics and Power Engineering, Obninsk, Russia) ; Gramegna, F ; Griesmayer, E ; Gunsing, F ; Haas, B ; Haight, R ; Heil, M ; Herrera-Martínez, A ; Ioannides, K G ; Isaev, S ; Jericha, E ; Kadi, Y ; Käppeler, F K ; Karamanis, D ; Ketlerov, V ; Kitis, G ; Köhler, P E ; Konovalov, V ; Kossionides, E ; Krticka, M ; Leeb, H ; Lindote, A ; Lopes, M I ; Lozano, M ; Lukic, S ; MOsconi, M ; Marganiec, J ; Marrone, S ; Mastinu, P F ; Mengoni, A ; Milazzo, P M ; Molina-Coballes, A ; Moreau, C ; Neves, F ; O'Brien, S ; Oberhummer, Heinz ; Pancin, J ; Paradela, C ; Pavlik, A ; Pavlopoulos, P ; Perrot, L ; Peskov, Vladimir ; Plag, R ; Plompen, A ; Plukis, A ; Poch, A ; Policarpo, Armando ; Pretel, C ; Quesada, J M ; Rapp, W ; Rauscher, T ; Reifarth, R ; Rosetti, M ; Rubbia, Carlo ; Rudolf, G ; Rullhusen, P ; Salgado, J ; Savvidis, E ; Soares, J C ; Stéphan, C ; Tagliente, G ; Taín, J L ; Tassan-Got, L ; Tavora, L M N ; Terlizzi, R ; Tsangas, N ; Vannini, G ; Vaz, P ; Ventura, A ; Villamarín, D ; Vincente, M C ; Vlachoudis, V ; Vlastou, R ; Voss, F ; Wendler, H ; Wiescher, M ; Wisshak, K |
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Abstract
| The accurate determination of neutron cross-sections as a function of the neutron energy at a time-of-flight facility requires a precise knowledge of the time-energy relation for the neutron beam. For the n _TOF neutron beam at CERN, produced by spallation of high-energy protons on a Pb target, the time-energy relation is connected to the production mechanism and to the subsequent moderation process. A calibration of the neutron energy scale is proposed based on detailed Monte Carlo simulations of the facility. This time-energy relation has been experimentally validated by means of dedicated measurements of standard energy resonances, from 1 eV to approximately 1 MeV. On the basis of the present measurements, it is proposed to correct the energy of the 1.3 eV resonance of /sup 193/Ir, which is commonly considered as an energy standard. |