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1. Present status and future programs of the n_TOF experiment

Author

S. Valenta, Marco Calviani, F. Cerutti, M. P. W. Chin, M. Krtička, F. Calviño, F. Roman, Srinivasan Ganesan, T. Martinez, F. Gramegna, M. B. Gómez-Hornillos, Alberto Mengoni, F. Beĉvář, M. Fernandez-Ordonez, Manuel Lozano, A. Manousos, Javier Praena, J. Marganiec, S. Andriamonje, R. Versaci, Mario Barbagallo, M. Brugger, C. Carrapiço, A. Riego, Matthias Heil, G. Tagliente, G. Cortes, E. Chiaveri, M. A. Cortés-Giraldo, P. F. Mastinu, R. Vlastou, M. Kokkoris, J. Andrzejewski, M. Mirea, C. Eleftheriadis, J. Billowes, D. Tarrío, Jeri Kroll, I. Duran, Thomas Rauscher, Carlo Rubbia, C. Lederer, R. Sarmento, D. Karadimos, M. Mastromarco, E. González-Romero, Carlos Guerrero, F. Avrigeanu, V. Variale, H. Leeb, M. Meaze, V. Vlachoudis, I. F. Gonçalves, D. Cano-Ott, J. L. Tain, Anton Wallner, P. Vaz, M. J. Vermeulen, M. Diakaki, Rene Reifarth, J. Perkowski, T. J. Wright, Fabio Belloni, T. Ware, F. Käppeler, Alberto Ventura, Yacine Kadi, K. Fraval, F. Gunsing, E. Griesmayer, D. G. Jenkins, E. Berthoumieux, J. M. Quesada, Cristian Massimi, A. Pavlik, L. Tassan-Got, C. Domingo-Pardo, C. Paradela, V. Boccone, L. Audouin, G. Vannini, Iris Dillmann, G. Giubrone, Roberto Losito, A. Tsinganis, Nicola Colonna, L.S. Leong, V. Bécares, E. Jericha, C. Weiß, E. Mendoza, P. M. Milazzo, N. Dzysiuk, Alfredo Ferrari, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions, E. Chiaveri, M. Calviani, V. Vlachoudi, C. Wei, S. Andriamonje, J. Andrzejewski, L. Audouin, F. Avrigeanu, M. Barbagallo, V. Bécare, F. Beĉvář, F. Belloni, E. Berthoumieux, J. Billowe, V. Boccone, M. Brugger, F. Calviño, D. Cano-Ott, C. Carrapiço, F. Cerutti, M. Chin, N. Colonna, G. Corté, M.A. Cortés-Giraldo, M. Diakaki, I. Dillmann, C. Domingo-Pardo, I. Duran, N. Dzysiuk, C. Eleftheriadi, M. Fernández-Ordóñez, A. Ferrari, K. Fraval, S. Ganesan, G. Giubrone, M.B. Gómez-Hornillo, I.F. Gonçalve, E. González-Romero, F. Gramegna, E. Griesmayer, C. Guerrero, F. Gunsing, M. Heil, D.G. Jenkin, E. Jericha, Y. Kadi, F. Käppeler, D. Karadimo, M. Kokkori, M. Krtička, J. Kroll, C. Lederer, H. Leeb, L.S. Leong, R. Losito, M. Lozano, A. Manouso, J. Marganiec, T. Martinez, C. Massimi, P.F. Mastinu, M. Mastromarco, M. Meaze, E. Mendoza, A. Mengoni, P.M. Milazzo, M. Mirea, C. Paradela, A. Pavlik, J. Perkowski, J. Praena, J.M. Quesada, T. Rauscher, R. Reifarth, A. Riego, F. Roman, C. Rubbia, R. Sarmento, G. Tagliente, J.L. Tain, D. Tarrio, L. Tassan-Got, A. Tsingani, S. Valenta, G. Vannini, V. Variale, P. Vaz, A. Ventura, M.J. Vermeulen, R. Versaci, R. Vlastou, A. Wallner, T. Ware, and T.J. Wright

Subjects
Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, Physics, Astrofísica nuclear, Information retrieval, Astrophysics::High Energy Astrophysical Phenomena, QC1-999, CERN - n_TOF, Nuclear Theory, Creative commons, NEUTRON TIME OF FLIGHT, Nuclear physics, Física::Astronomia i astrofísica [Àrees temàtiques de la UPC], Physics::Accelerator Physics, Nuclear astrophysics, Nuclear Experiment, License
Abstract

The neutron time-of-flight facility n_TOF at CERN, Switzerland, operational since 2001, delivers neutrons using the Proton Synchrotron (PS) 20 GeV/c proton beam impinging on a lead spallation target. The facility combines a very high instantaneous neutron flux, an excellent time of flight resolution due to the distance between the experimental area and the production target (185 meters), a low intrinsic background and a wide range of neutron energies, from thermal to GeV neutrons. These characteristics provide a unique possibility to perform neutron-induced capture and fission cross-section measurements for applications in nuclear astrophysics and in nuclear reactor technology. The most relevant measurements performed up to now and foreseen for the future will be presented in this contribution. The overall efficiency of the experimental program and the range of possible measurements achievable with the construction of a second experimental area (EAR-2), vertically located 20 m on top of the n_TOF spallation target, might offer a substantial improvement in measurement sensitivities. A feasibility study of the possible realisation of the installation extension will be also presented.

Published
2012

2. Measurements of high-energy neutron-induced fission ofnatPb and209Bi

Author

H. Álvarez, J. L. Tain, D. Cano-Ott, P. E. Koehler, Marco T. Pigni, Rene Reifarth, P. Pavlopoulos, I. Dillmann, J. M. Quesada, Masayuki Igashira, M. Kerveno, Christoph A. Stephan, G. Cortes, S. Lukic, G. Aerts, D. Tarrío, Corrie S. Moreau, S. Isaev, U. Abbondanno, F. Gunsig, Ralf Plag, Roberto Capote, A. Plukis, P.A. Assimakopoulos, F. Alvarez-Velarde, Gerald Badurek, G. Vannini, G. Tagliente, A. Ventura, C. Eleftheriadis, A. Herrera-Martinez, N. Patronis, W.I. Furman, C. Rubbia, S. Walter, A. Lindote, Arnaud Ferrari, M. C. Vicente, Thomas Rauscher, A. J. M. Plompen, R. Vlastou, L. Perrot, J. Marganiec, Alberto Mengoni, C. A. Papachristodoulou, E. Berthoumieux, S. Andriamonje, I. Lopes, L. Sarchiapone, D. Karadimos, E. Chiaveri, P. F. Mastinu, I. Savvidis, James L. Cox, L. Tassan-Got, Carlos Guerrero, E. González-Romero, H. Leeb, Heinz Oberhummer, R. C. Haight, F. Becvar, C. Paradela, L. Audouin, M. Krtička, C. Le Naour, R. Ferreira-Marques, T. Martinez, D. Trubert, Michael Wiescher, F. Voss, Cristian Massimi, K. Wisshak, S. David, B. Berthier, Y. Kadi, Michael Heil, Marco Calviani, E. Kossionides, I. Duran, V. Chepel, M. Oshima, G. Rudolf, C. T. Papadopoulos, Javier Praena, L. Ferrant, J. Andrzejewski, V. Vlachoudis, F. Neves, P. M. Milazzo, P. Baumann, D. Villamarin, C. Pretel, E. Jericha, K. Fujii, C. Santos, M. Embid-Segura, Isabel S. Gonçalves, S. Marrone, Manuel Lozano, L. Tavora, P. Rullhusen, P. Cennini, M. Mosconi, S. O'Brien, Nicola Colonna, F. Gramegna, R. Terlizzi, F. Käppeler, J. Pancin, J. Salgado, A. Poch, M. Dahlfors, C. Carrapiço, P. Vaz, Aaron Couture, B. Haas, F. Calviño, W. Dridi, C. Lampoudis, A. Pavlik, C. Domingo-Pardo, D. Karamanis, D. Tarrío, L. Tassan-Got, L. Audouin, B. Berthier, I. Duran, L. Ferrant, S. Isaev, C. Le Naour, C. Paradela, C. Stephan, D. Trubert, U. Abbondanno, G. Aert, H. Álvarez, F. Álvarez-Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulo, G. Badurek, P. Baumann, F. Becvár, E. Berthoumieux, F. Calviño, M. Calviani, D. Cano-Ott, R. Capote, C. Carrapiço, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Corte, A. Couture, J. Cox, M. Dahlfor, S. David, I. Dillmann, C. Domingo-Pardo, W. Dridi, C. Eleftheriadi, M. Embid-Segura, A. Ferrari, R. Ferreira-Marque, K. Fujii, W. Furman, I. Gonçalve, E. González-Romero, F. Gramegna, C. Guerrero, F. Gunsig, B. Haa, R. Haight, M. Heil, A. Herrera-Martinez, M. Igashira, E. Jericha, Y. Kadi, F. Käppeler, D. Karadimo, D. Karamani, M. Kerveno, P. Koehler, E. Kossionide, M. Krticka, C. Lampoudi, H. Leeb, A. Lindote, I. Lope, M. Lozano, S. Lukic, J. Marganiec, S. Marrone, T. Martínez, C. Massimi, P. Mastinu, A. Mengoni, P.M. Milazzo, C. Moreau, M. Mosconi, F. Neve, H. Oberhummer, S. O’Brien, M. Oshima, J. Pancin, C. Papachristodoulou, C. Papadopoulo, N. Patroni, A. Pavlik, P. Pavlopoulo, L. Perrot, M.T. Pigni, R. Plag, A. Plompen, A. Pluki, A. Poch, J. Praena, C. Pretel, J. Quesada, T. Rauscher, R. Reifarth, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, C. Santo, L. Sarchiapone, I. Savvidi, G. Tagliente, J.L. Tain, L. Tavora, R. Terlizzi, G. Vannini, P. Vaz, A. Ventura, D. Villamarin, M.C. Vicente, V. Vlachoudi, R. Vlastou, F. Vo, S. Walter, M. Wiescher, and K. Wisshak

Subjects
High energy, Engineering, Fission, business.industry, Physics, QC1-999, Nuclear engineering, Nuclear Theory, Creative commons, Engineering physics, neutron time-of-flight facility, Neutron, Nuclear Experiment, business, License
Abstract

he CERN Neutron Time-Of-Flight (n_TOF) facility is well suited to measure low cross sections as those of neutron-induced fission in subactinides. The cross section ratios of (nat)Pb and (209)Bi relative to (235)U and (238)U were measured using PPAC detectors and a fragment coincidence method that allows us to identify the fission events. The present experiment provides first results for neutron-induced fission up to 1 GeV. Good agreement is found with previous experimental data below 200 MeV. The comparison with proton-induced fission indicates that the limiting regime where neutron-induced and proton-induced fission reach equal cross sections is close to 1 GeV.

Published
2010
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