High-accuracy determination of the neutron flux in the new experimental area n_TOF-EAR2 at CERNx

M. Sabate-Gilarte, M. Barbagallo, N. Colonna, F. Gunsing, P. Zugec, V. Vlachoudis, Y. H. Chen, A. Stamatopoulos, J. Lerendegui-Marco, M. A. Cortes-Giraldo, A. Villacorta, C. Guerrero, L. Damone, L. Audouin, E. Berthoumieux, L. Cosentino, M. Diakaki, P. Finocchiaro, A. Musumarra, T. Papaevangelou, M. Piscopo, L. Tassan-Got, O. Aberle, J. Andrzejewski, V. Becares, M. Bacak, R. Baccomi, J. Balibrea, S. Barros, F. Becvar, C. Beinrucker, F. Belloni, J. Billowes, D. Bosnar, M. Brugger, M. Caamano, F. Calvino, M. Calviani, D. Cano-Ott, R. Cardella, A. Casanovas, D. M. Castelluccio, F. Cerutti, E. Chiaveri, G. Cortes, K. Deo, C. Domingo-Pardo, R. Dressler, E. Dupont, I. Duran, B. Fernandez-Dominguez, A. Ferrari, P. Ferreira, R. J. W. Frost, V. Furman, K. Gobel, A. R. Garcia, A. Gawlik, I. Gheorghe, T. Glodariu, I. F. Goncalves, E. Gonzalez, A. Goverdovski, E. Griesmayer, H. Harada, T. Heftrich, S. Heinitz, A. Hernandez-Prieto, J. Heyse, D. G. Jenkins, E. Jericha, F. Kappeler, Y. Kadi, T. Katabuchi, P. Kavrigin, V. Ketlerov, V. Khryachkov, A. Kimura, N. Kivel, M. Kokkoris, M. Krticka, E. Leal-Cidoncha, C. Lederer, H. Leeb, M. Licata, S. Lo Meo, S. J. Lonsdale, R. Losito, D. Macina, J. Marganiec, T. Martinez, C. Massimi, P. Mastinu, M. Mastromarco, F. Matteucci, E. A. Maugeri, E. Mendoza, A. Mengoni, P. M. Milazzo, F. Mingrone, M. Mirea, S. Montesano, R. Nolte, A. Oprea, F. R. Palomo-Pinto, C. Paradela, N. Patronis, A. Pavlik, J. Perkowski, J. I. Porras, J. Praena, J. M. Quesada, K. Rajeev, T. Rauscher, R. Reifarth, A. Riego-Perez, M. S. Robles, P. C. Rout, C. Rubbia, J. A. Ryan, A. Saxena, P. Schillebeeckx, S. Schmidt, D. Schumann, P. Sedyshev, A. G. Smith, S. V. Suryanarayana, G. Tagliente, J. L. Tain, A. Tarifeno-Saldivia, A. Tsinganis, S. Valenta, G. Vannini, V. Variale, P. Vaz, A. Ventura, R. Vlastou, A. Wallner, S. Warren, M. Weigand, C. Wolf, P. J. Woods, C. Weiss, T. Wright

A new high flux experimental area has recently become operational at the n_TOF facility at CERN. This new measuring station, n_TOF-EAR2, is placed at the end of a vertical beam line at a distance of approximately 20m from the spallation target. The characterization of the neutron beam, in terms of flux, spatial profile and resolution function, is of crucial importance for the feasibility study and data analysis of all measurements to be performed in the new area. In this paper, the measurement of the neutron flux, performed with different solid-state and gaseous detection systems, and using three neutronconverting reactions considered standard in different energy regions is reported. The results of the various measurements have been combined, yielding an evaluated neutron energy distribution in a wide energy range, from 2meV to 100MeV, with an accuracy ranging from 2%, at low energy, to 6% in the high-energy region. In addition, an absolute normalization of the n_TOF-EAR2 neutron flux has been obtained by means of an activation measurement performed with 197 Au foils in the beam.

Externe Organisation(en)
European Organization for Nuclear Research (CERN), Universidad de Sevilla, Istituto Nazionale di Fisica Nucleare, Roma, Université Paris-Saclay, University of Zagreb, Institut de Physique Nucléaire d'Orsay (IPN), National Technical University of Athens (NTUA), Universidad de Salamanca, Università degli Studi di Catania, University of Lodz, Centro de Investigaciones Energeticas Medioambientales y Tecnológica, Technische Universität Wien, Universidade Técnica de Lisboa, Charles University Prague, Johann Wolfgang Goethe-Universität Frankfurt am Main, University of Manchester, Universidade de Santiago de Compostela (USC), Universitat Politècnica de Catalunya, Agenzia Nazl Nuove Tecnol Energia & Sviluppo Econ, Paul Scherrer Institute, Joint Institute for Nuclear Research, Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN HH), Institute of Physics and Power Engineering (IPPE), Japan Atomic Energy Agency, Commiss European Communities, Joint Res Ctr, Inst Reference Mat & Measurements, University of York, Karlsruher Institut für Technologie, Tokyo Institute of Technology (TIT), University of Edinburgh, Università degli Studi di Bologna, Università degli Studi di Trieste, Physikalisch-Technische Bundesanstalt (PTB), University of Ioannina, Universidad de Granada, Bhabha Atom Res Ctr BARC, University of Hertfordshire, Universität Basel, Australian National University, Instituto de Física Corpuscular (IFIC), Consejo Superior de Investigaciones Científicas (CSIC), Universidad Politécnica de Valencia
European Physical Journal A
Anzahl der Seiten
ÖFOS 2012
103014 Kernphysik
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