Time-energy relation of the n_TOF neutron beam : energy standards revisited

Lorusso, G. and Colonna, N. and Marrone, S. and Tagliente, G. and Heil, M. and Cano-Ott, D. and Mosconi, M. and Moreau, C. and Mengoni, A. and Abbondanno, U. and Aerts, G. and Alvarez-Pol, H. and Alvarez-Velarde, F. and Andriamonje, S. and Andrzejewski, J. and Angelopoulos, A. and Assimakopoulos, P. and Badurek, G. and Baumann, P. and Becvar, F. and Benlliure, J. and Berthomieux, E. and Bisceglie, E. and Calvino, P. and Capote, R. and Cennini, P. and Chepel, V. and Chiaveri, E. and Coceva, C. and Cortes, G. and Cortina, D. and Couture, A. and Cox, J. and Dababneh, S. and Dahlfors, M. and Davids, S. and Dolfini, R. and Domingo-Pardo, C. and Duran, I. and Eleftheriadis, C. and Embid-Segura, M. and Ferrant, L. and Ferrari, A. and Ferreira-Marques, R. and Frais-Koelbl, H. and Furman, W. I. and Goncalves, I. F. and Gonzalez-Romero, E. and Goverdovski, A. and Gramegna, F. and Griesmayer, E. and Gunsing, F. and Haas, B. and Haight, R. and Herrera-Martinez, A. and Ioannides, K. G. and Isaev, S. and Jericha, E. and Kappeler, F. and Kadi, Y. and Karamanis, D. and Ketlerov, V. and Kitis, G. and Koehler, P. E. and Konovalov, V. and Kossionides, E. and Krticka, M. and Leeb, H. and Lindote, A. and Lopes, M. I. and Lozano, M. and Lukic, S. and Marganiec, J. and Mastinu, P. F. and Milazzo, P. M. and Molina-Coballes, A. and Neves, F. and Oberhummer, H. and O`Brien, S. and Pancin, J. and Paradela, C. and Pavlik, A. and Pavlopoulos, P. and Perrot, L. and Peskov, V. and Plag, R. and Plompen, A. and Plukis, A. and Poch, A. and Policarpo, A. and Pretel, C. and Quesada, J. M. and Rapp, W. and Rauscher, T. and Reifarth, R. and Rosetti, M. and Rubbia, C. and Rudolf, G. and Rullhusen, P. and Salgado, J. and Savvidis, E. and Soares, J. C. and Stephan, C. and Tain, J. L. and Tassan-Got, L. and Tavor, L. M. N. and Terlizzi, R. and Tsangas, N. and Vannini, G. and Vaz, P. and Ventura, A. and Villamarin, D. and Vincente, M. C. and Vlachoudis, V. and Vlastou, R. and Voss, F. and Wendler, H. and Wiescher, M. and Wisshak, K.. (2004) Time-energy relation of the n_TOF neutron beam : energy standards revisited. Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, Vol. 532, H. 3. pp. 622-630.

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Official URL: http://edoc.unibas.ch/dok/A5253970

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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 193 Ir, which is commonly considered as an energy standard.
Faculties and Departments:05 Faculty of Science > Departement Physik > Former Organization Units Physics > Theoretische Physik Astrophysik (Thielemann)
UniBasel Contributors:Rauscher, Thomas
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:25
Deposited On:22 Mar 2012 13:46

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