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1. Measurement of the angular distribution of fission fragments using a PPAC assembly at CERN n_TOF

Author

F. Mingrone, M. J. Vermeulen, J. Andrzejewski, P. E. Koehler, C. Langer, F. Gunsing, Petar Žugec, Carlos Guerrero, Damir Bosnar, C. Le Naour, Y. Kadi, S. Valenta, Marco Calviani, I. F. Gonçalves, F. Käppeler, T. Ware, J. Mottier, D. G. Jenkins, M. B. Gómez-Hornillos, M. P. W. Chin, J. Billowes, F. Cerutti, Cristian Massimi, V. Bécares, C. Paradela, E. Griesmayer, A. Pavlik, Fabio Belloni, L. Audouin, Srinivasan Ganesan, P. Gurusamy, F. Roman, Rene Reifarth, Stefan Schmidt, G. Vannini, C. Domingo-Pardo, G. Giubrone, M. A. Cortés-Giraldo, Vittorio Boccone, J. M. Quesada, M. Meaze, W. Mondalaers, Mario Barbagallo, M. Caamaño, L. Tassan-Got, D. Cano-Ott, M. Diakaki, A. Tsinganis, I. Duran, A. R. García, Ch.O. Bacri, A. Manousos, Nicola Colonna, L.S. Leong, R. Vlastou, P. F. Mastinu, Vasilis Vlachoudis, M. Brugger, J. Marganiec, Mario Weigand, G. Cortes, E. Berthoumieux, A. Ventura, D. Tarrío, V. Petitbon, Alberto Mengoni, P. M. Milazzo, Arnaud Ferrari, S. Altstadt, G. Tagliente, C. Eleftheriadis, Roberto Losito, F. Bečvář, E. Chiaveri, M. Mirea, Thomas Rauscher, E. Jericha, E. Mendoza, C. Rubbia, C. Weiß, D. Karadimos, M. Kokkoris, T. J. Wright, Peter Schillebeeckx, N. Dzysiuk, C. Lederer, E. González-Romero, P. Vaz, H. Leeb, Javier Praena, M. Mastromarco, J. Perkowski, K. Fraval, C. Carrapiço, Anton Wallner, M. Krtička, F. Calviño, V. Variale, J. L. Tain, Roberto Versaci, T. Martinez, A. Riego, A. J. M. Plompen, Jeri Kroll, R. Sarmento, D. Tarrio, L. S. Leong, L. Audouin, I. Duran, C. Paradela, L. Tassan-Got, C. L. Naour, C. O. Bacri, V. Petitbon, J. Mottier, M. Caamano, S. Altstadt, J. Andrzejewski, M. Barbagallo, V. Becare, F. Becvar, F. Belloni, E. Berthoumieux, J. Billowe, V. Boccone, D. Bosnar, M. Brugger, M. Calviani, F. Calvino, D. Cano-Ott, C. Carrapico, F. Cerutti, E. Chiaveri, M. Chin, N. Colonna, G. Corte, M. A. Cortes-Giraldo, M. Diakaki, C. Domingo-Pardo, N. Dzysiuk, C. Eleftheriadi, A. Ferrari, K. Fraval, S. Ganesan, A. R. Garcia, G. Giubrone, M. B. Gomez-Hornillo, I. F. Goncalve, E. Gonzalez-Romero, E. Griesmayer, C. Guerrero, F. Gunsing, P. Gurusamy, G. Jenkin, E. Jericha, Y. Kadi, F. Kaeppeler, D. Karadimo, P. Koehler, M. Kokkori, M. Krticka, J. Kroll, C. Langer, C. Lederer, H. Leeb, R. Losito, A. Manouso, J. Marganiec, T. Martinez, C. Massimi, P. F. Mastinu, M. Mastromarco, M. Meaze, E. Mendoza, A. Mengoni, P. M. Milazzo, F. Mingrone, M. Mirea, W. Mondalaer, A. Pavlik, J. Perkowski, A. Plompen, J. Praena, J. M. Quesada, T. Rauscher, R. Reifarth, A. Riego, F. Roman, C. Rubbia, R. Sarmento, P. Schillebeeckx, S. Schmidt, G. Tagliente, J. L. Tain, A. Tsingani, S. Valenta, G. Vannini, V. Variale, P. Vaz, A. Ventura, R. Versaci, M. J. Vermeulen, V. Vlachoudi, R. Vlastou, A. Wallner, T. Ware, M. Weigand, C. Wei, T. J. Wright, P. Zugec, 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, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Universitat Politècnica de Catalunya. NERG - Grup de Recerca d'Enginyeria Nuclear, and Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear

Subjects
Nuclear and High Energy Physics, Fission, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Neutron, Anisotropy, Angular distribution, 232Th, Gas detectors, Subatomär fysik, Nuclear physics, Energia nuclea, Subatomic Physics, Detectors and Experimental Techniques, Th-232, Nuclear Experiment, Instrumentation, Physics, Energies::Energia nuclear [Àrees temàtiques de la UPC], Large Hadron Collider, Detector, Nuclear energy, Actinide, Neutron radiation, NEUTRON INDUCED FISSION, Nuclear fission, Física nuclear, ANGULAR DISTRIBUTIONS, TIME OF FLIGHT
Abstract

A fission reaction chamber based on Parallel Plate Avalanche Counters (PPACs) was built for measuring angular distributions of fragments emitted in neutron-induced fission of actinides at the neutron beam available at the Neutron Time-Of-Flight (n_TOF) facility at CERN. The detectors and the samples were tilted 45 degrees with respect to the neutron beam direction to cover all the possible values of the emission angle of the fission fragments. The main features of this setup are discussed and results on the fission fragment angular distribution are provided for the Th-232(n,f) reaction around the fission threshold. The results are compared with the available data in the literature, demonstrating the good capabilities of this setup. (C) 2014 Elsevier B.V. All rights reserved. A fission reaction chamber based on Parallel Plate Avalanche Counters (PPACs) was built for measuring angular distributions of fragments emitted in neutron-induced fission of actinides at the neutron beam available at the Neutron Time-Of-Flight (n-TOF) facility at CERN. The detectors and the samples were tilted 45 with respect to the neutron beam direction to cover all the possible values of the emission angle of the fission fragments. The main features of this setup are discussed and results on the fission fragment angular distribution are provided for the 232Th(n,f) reaction around the fission threshold. The results are compared with the available data in the literature, demonstrating the good capabilities of this setup. © 2014 Elsevier B.V.

Published
2014
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2. Neutron capture cross section measurement ofU238at the CERN n_TOF facility in the energy region from 1 eV to 700 keV

Author

A. Pavlik, C. Domingo-Pardo, J. Marganiec, M. Sabaté-Gilarte, Javier Praena, S. Lo Meo, P. F. Mastinu, L. S. Leong, S. Valenta, P. M. Milazzo, A. K. Saxena, C. Lampoudis, I. F. Gonçalves, J. L. Tain, Marco Calviani, M. Mirea, C. Lederer, E. Chiaveri, D. Cano-Ott, F. Bečvář, M. Mastromarco, F. Gunsing, M. A. Cortés-Giraldo, T. Wright, M. P. W. Chin, Jeri Kroll, E. Jericha, R. Sarmento, F. Mingrone, P. Vaz, C. Weiß, A. Hernández-Prieto, J. Andrzejewski, R. Losito, Carlo Rubbia, S. Schmidt, A. J. M. Plompen, F. Cerutti, A. Riego, Alberto Ventura, Anton Wallner, Alfredo Ferrari, E. Berthoumieux, Cristian Massimi, Srinivasan Ganesan, T. Ware, A. Manousos, F. Käppeler, C. Paradela, Alberto Mengoni, S. Altstadt, R. Vlastou, M. Kokkoris, N. Kivel, E. Griesmayer, E. Leal-Cidoncha, K. Fraval, Damir Bosnar, Petar Žugec, Y. Kadi, V. Bécares, Carlos Guerrero, Mario Barbagallo, C. Eleftheriadis, D. Schumann, M. Krtička, F. Calviño, Thomas Rauscher, T. Martinez, P. Schillebeeckx, D. G. Jenkins, P. E. Koehler, J. Billowes, G. Tagliente, D. Karadimos, Christoph Langer, A. Tsinganis, W. Mondalaers, E. González-Romero, M. S. Robles, Nicola Colonna, G. Giubrone, A. R. García, Vasilis Vlachoudis, M. Brugger, M. Diakaki, I. Duran, G. Cortes, D. Tarrío, R. Dressler, M. J. Vermeulen, H. Leeb, V. Variale, J. Perkowski, A. Mallick, G. Vannini, M. Weigand, F. Belloni, C. Carrapiço, E. Mendoza, Rene Reifarth, J. M. Quesada, L. Tassan-Got, and L. Audouin

Subjects
Physics, 010308 nuclear & particles physics, Gamma ray, Nuclear data, Scintillator, 7. Clean energy, 01 natural sciences, Resonance (particle physics), Nuclear physics, Neutron capture, Nuclear reactor core, 0103 physical sciences, Neutron cross section, Neutron, 010306 general physics
Abstract

The aim of this work is to provide a precise and accurate measurement of the U238(n,γ) reaction cross section in the energy region from 1 eV to 700 keV. This reaction is of fundamental importance for the design calculations of nuclear reactors, governing the behavior of the reactor core. In particular, fast reactors, which are experiencing a growing interest for their ability to burn radioactive waste, operate in the high energy region of the neutron spectrum. In this energy region most recent evaluations disagree due to inconsistencies in the existing measurements of up to 15%. In addition, the assessment of nuclear data uncertainty performed for innovative reactor systems shows that the uncertainty in the radiative capture cross section of U238 should be further reduced to 1-3% in the energy region from 20 eV to 25 keV. To this purpose, addressed by the Nuclear Energy Agency as a priority nuclear data need, complementary experiments, one at the GELINA and two at the n-TOF facility, were proposed and carried out within the 7th Framework Project ANDES of the European Commission. The results of one of these U238(n,γ) measurements performed at the n-TOF CERN facility are presented in this work. The γ-ray cascade following the radiative neutron capture has been detected exploiting a setup of two C6D6 liquid scintillators. Resonance parameters obtained from this work are on average in excellent agreement with the ones reported in evaluated libraries. In the unresolved resonance region, this work yields a cross section in agreement with evaluated libraries up to 80 keV, while for higher energies our results are significantly higher.

Published
2017
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3. Integral measurement of the 12C(n, p)12B reaction up to 10 GeV

Author

M. P. W. Chin, F. Roman, A. R. García, M. Brugger, G. Cortes, C. Eleftheriadis, Thomas Rauscher, D. Karadimos, D. Tarrío, A. Pavlik, E. González-Romero, T. Ware, A. Manousos, A. Ventura, F. Mingrone, E. Griesmayer, M. A. Cortés-Giraldo, M. Mastromarco, C. Lederer, Mario Weigand, C. Domingo-Pardo, J. Andrzejewski, Srinivasan Ganesan, S. Altstadt, G. Vannini, N. Colonna, J. Marganiec, Massimo Barbagallo, L. Cosentino, D. Bosnar, M. Mirea, F. Bečvář, I. F. Gonçalves, A. Riego, Anton Wallner, E. Mendoza, Peter Schillebeeckx, S. Valenta, F. Calviño, V. Bécares, H. Leeb, I. Duran, K. Fraval, Carlos Guerrero, Fabio Belloni, V. Variale, Marco Calviani, J. Perkowski, P. Vaz, S. Heinitz, M. Kokkoris, D. Cano-Ott, Rene Reifarth, M. Krtička, Stefan Schmidt, G. Tagliente, M. Diakaki, F. Gunsing, Vittorio Boccone, Christoph Langer, J. M. Quesada, L. Tassan-Got, Roberto Versaci, Cristian Massimi, T. Martinez, M.B. Gómez-Hornillos, D. G. Jenkins, A. K. Saxena, Arnaud Ferrari, Alberto Mengoni, J. Billowes, P. M. Milazzo, A. Musumarra, C. Carrapiço, E. Chiaveri, P. F. Mastinu, E. Jericha, Paolo Finocchiaro, Dorothea Schumann, C. Weiß, A. J. M. Plompen, W. Mondalaers, G. Giubrone, M. J. Vermeulen, Jeri Kroll, R. Sarmento, C. Paradela, L. Audouin, T. J. Wright, Petar Žugec, R. Vlastou, E. Berthoumieux, Roberto Losito, Rugard Dressler, A. Tsinganis, L.S. Leong, Vasilis Vlachoudis, F. Cerutti, Javier Praena, S. Lo Meo, P. Gurusamy, F. Käppeler, J. L. Tain, Niko Kivel, C. Rubbia, Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, n_TOF, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Žugec, P, Colonna, N., Bosnar, D., Ventura, A., Mengoni, A., Altstadt, S., Andrzejewski, J., Audouin, L., Barbagallo, M., Bécares, V., Bečvář, F., Belloni, F., Berthoumieux, E., Billowes, J., Boccone, V., Brugger, M., Calviani, M., Calviño, F., Cano-Ott, D., Carrapiço, C., Cerutti, F., Chiaveri, E., Chin, M., Cortés, G., Cortés-Giraldo, M.A., Cosentino, L., Diakaki, M., Domingo-Pardo, C., Dressler, R., Duran, I., Eleftheriadis, C., Ferrari, A., Finocchiaro, P., Fraval, K., Ganesan, S., García, A.R., Giubrone, G., Gómez-Hornillos, M.B., Gonçalves, I.F., González-Romero, E., Griesmayer, E., Guerrero, C., Gunsing, F., Gurusamy, P., Heinitz, S., Jenkins, D.G., Jericha, E., Käppeler, F., Karadimos, D., Kivel, N., Kokkoris, M., Krtička, M., Kroll, J., Langer, C., Lederer, C., Leeb, H., Leong, L.S., Lo Meo, S., Losito, R., Manousos, A., Marganiec, J., Martínez, T., Massimi, C., Mastinu, P., Mastromarco, M., Mendoza, E., Milazzo, P.M., Mingrone, F., Mirea, M., Mondalaers, W., Musumarra, A., Paradela, C., Pavlik, A., Perkowski, J., Plompen, A., Praena, J., Quesada, J., Rauscher, T., Reifarth, R., Riego, A., Roman, F., Rubbia, C., Sarmento, R., Saxena, A., Schillebeeckx, P., Schmidt, S., Schumann, D., Tagliente, G., Tain, J.L., Tarrío, D., Tassan-Got, L., Tsinganis, A., Valenta, S., Vannini, G., Variale, V., Vaz, P., Versaci, R., Vermeulen, M.J., Vlachoudis, V., Vlastou, R., Wallner, A., Ware, T., Weigand, M., Weiß, C., and Wright, T.

Subjects
Nuclear and High Energy Physics, 12C(n, p)12B reaction, integral measurement, n_TOF, Reaction, FOS: Physical sciences, Neutron, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Time of flight technique, 7. Clean energy, 01 natural sciences, Nuclear physics, Cross section (physics), Neutron flux, 0103 physical sciences, Nuclear Physics - Experiment, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Physics, Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, Large Hadron Collider, Cross section, 010308 nuclear & particles physics, Time of flight, 13. Climate action, Production (computer science), Beam (structure)
Abstract

The integral measurement of the $^{12}$C(n,p)$^{12}$B reaction was performed at the neutron time of flight facility n_TOF at CERN. The total number of $^{12}$B nuclei produced per neutron pulse of the n_TOF beam was determined using the activation technique in combination with a time of flight technique. The cross section is integrated over the n_TOF neutron energy spectrum from reaction threshold at 13.6 MeV to 10 GeV. Having been measured up to 1 GeV on basis of the $^{235}$U(n,f) reaction, the neutron energy spectrum above 200 MeV has been reevaluated due to the recent extension of the cross section reference for this particular reaction, which is otherwise considered a standard up to 200 MeV. The results from the dedicated GEANT4 simulations have been used to evaluate the neutron flux from 1 GeV up to 10 GeV. The experimental results related to the $^{12}$C(n,p)$^{12}$B reaction are compared with the evaluated cross sections from major libraries and with the predictions of different GEANT4 models, which mostly underestimate the $^{12}$B production. On the contrary, a good reproduction of the integral cross section derived from measurements is obtained with TALYS-1.6 calculations, with optimized parameters., 14 pages, 11 figures, 3 tables

Published
2016
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4. Experimental neutron capture data of 58Ni from the CERN n-TOF facility

Author

M. B. Gómez-Hornillos, Christoph Langer, M. Mirea, Petar Žugec, A. K. Saxena, J. Billowes, F. Cerutti, Arnaud Ferrari, H. Leeb, A. J. M. Plompen, G. Vannini, P. Vaz, J. Perkowski, G. Tagliente, Alberto Ventura, Rene Reifarth, V. Bécares, M. Krtička, F. Calviño, Stefan Schmidt, D. Cano-Ott, Alberto Mengoni, S. Heinitz, Vittorio Boccone, M. Diakaki, C. Paradela, Mario Weigand, J. M. Quesada, L. Tassan-Got, E. Jericha, L. Audouin, G. Cortes, Javier Praena, S. Lo Meo, V. Variale, D. Tarrío, M. Kokkoris, J. L. Tain, Dorothea Schumann, C. Weiß, T. Martinez, Rugard Dressler, Jeri Kroll, Roberto Versaci, A. Tsinganis, G. Giubrone, Carlos Guerrero, Nicola Colonna, S. Altstadt, A. Pavlik, R. Sarmento, L.S. Leong, Vasilis Vlachoudis, C. Rubbia, F. Mingrone, J. Andrzejewski, C. Domingo-Pardo, A. Riegov, T. J. Wright, A. Manousos, J. Marganiec, I. F. Gonçalves, F. Bečvář, Roberto Losito, E. Mendoza, P. M. Milazzo, Peter Schillebeeckx, N. Dzysiuk, K. Fraval, F. Gunsing, C. Lederer, R. Vlastou, Fabio Belloni, E. Chiaveri, E. Berthoumieux, P. F. Mastinu, Cristian Massimi, Marco Pignatari, Damir Bosnar, Y. Kadi, S. Valenta, Marco Calviani, F. Käppeler, N. Kivel, P. Gurusamy, M. Meaze, M. J. Vermeulen, W. Mondalaers, M. Mastromarco, C. Carrapiço, Anton Wallner, I. Duran, D. G. Jenkins, M. A. Cortés-Giraldo, P. E. Koehler, T. Ware, E. Griesmayer, A. R. García, M. Brugger, Srinivasan Ganesan, Mario Barbagallo, M. P. W. Chin, F. Roman, C. Eleftheriadis, Thomas Rauscher, D. Karadimos, E. González-Romero, Žugec, P., Barbagallo, M., Colonna, N., Bosnar, D., Altstadt, S., Andrzejewski, J., Audouin, L., Bécares, V., Bečvář, F., Belloni, F., Berthoumieux, E., Billowes, J., Boccone, V., Brugger, M., Calviani, M., Calviño, F., Cano-Ott, D., Carrapiço, C., Cerutti, F., Chiaveri, E., Chin, M., Cortés, G., Cortés-Giraldo, M.A., Diakaki, M., Domingo-Pardo, C., Dressler, R., Duran, I., Dzysiuk, N., Eleftheriadis, C., Ferrari, A., Fraval, K., Ganesan, S., García, A.R., Giubrone, G., Gómez-Hornillos, M.B., Gonçalves, I.F., González-Romero, E., Griesmayer, E., Guerrero, C., Gunsing, F., Gurusamy, P., Heinitz, S., Jenkins, D.G., Jericha, E., Kadi, Y., Käppeler, F., Karadimos, D., Kivel, N., Koehler, P., Kokkoris, M., Krtička, M., Kroll, J., Langer, C., Lederer, C., Leeb, H., Leong, L.S., Lo Meo, S., Losito, R., Manousos, A., Marganiec, J., Martínez, T., Massimi, C., Mastinu, P.F., Mastromarco, M., Meaze, M., Mendoza, E., Mengoni, A., Milazzo, P.M., Mingrone, F., Mirea, M., Mondalaers, W., Paradela, C., Pavlik, A., Perkowski, J., Pignatari, M., Plompen, A., Praena, J., Quesada, J.M., Rauscher, T., Reifarth, R., Riegov, A., Roman, F., Rubbia, C., Sarmento, R., Saxena, A., Schillebeeckx, P., Schmidt, S., Schumann, D., Tagliente, G., Tain, J.L., Tarrío, D., Tassan-Got, L., Tsinganis, A., Valenta, S., Vannini, G., Variale, V., Vaz, P., Ventura, A., Versaci, R., Vermeulen, M.J., Vlachoudis, V., Vlastou, R., Wallner, A., Ware, T., Weigand, M., Weiß, C., Wright, T., Universitat Politècnica de Catalunya. Departament de Física, and Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group

Subjects
Nuclear reaction, nTOF, Physics::Instrumentation and Detectors, QC1-999, Astrophysics::High Energy Astrophysical Phenomena, Neutron, Nuclear physics, Physics and Astronomy (all), CERN, Neutron cross section, Nuclear Experiment, Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, Physics, Large Hadron Collider, Física [Àrees temàtiques de la UPC], Cross section, Reaccions nuclears, Resonance, Neutron temperature, Time of flight, Neutron capture, Nuclear reactions
Abstract

The neutron capture cross section of 58 Ni was measured at the neutron time of flight facility n_TOF at CERN, from 27 meV to 400 keV neutron energy. Special care has been taken to identify all the possible sources of background, with the so-called neutron background obtained for the first time using high-precision GEANT4 simulations. The energy range up to 122 keV was treated as the resolved resonance region, where 51 resonances were identified and analyzed by a multilevel R -matrix code SAMMY. Above 122 keV the code SESH was used in analyzing the unresolved resonance region of the capture yield. Maxwellian averaged cross sections were calculated in the temperature range of kT = 5 – 100 keV, and their astrophysical implications were investigated.

Published
2015

5. Measurement of the12C(n,p)12Bcross section at n_TOF at CERN by in-beam activation analysis

Author

A. R. García, G. Cortes, F. Cerutti, D. Tarrío, R. Losito, M. Brugger, M.B. Gómez-Hornillos, Carlos Guerrero, Alberto Mengoni, P. Schillebeeckx, E. Mendoza, J. L. Tain, Rene Reifarth, F. Käppeler, J. Marganiec, A. Musumarra, Vittorio Boccone, J. M. Quesada, L. Tassan-Got, C. Eleftheriadis, Christoph Langer, M. Mirea, L. Audouin, E. Chiaveri, Thomas Rauscher, A. K. Saxena, S. Valenta, P. F. Mastinu, C. Carrapiço, M. Mastromarco, Javier Praena, S. Lo Meo, D. Karadimos, D. Cano-Ott, F. Mingrone, S. Heinitz, T. Ware, Marco Calviani, E. González-Romero, J. Andrzejewski, N. Kivel, G. Vannini, M. P. W. Chin, P. Gurusamy, F. Roman, Srinivasan Ganesan, Carlo Rubbia, A. Riego, A. Manousos, E. Jericha, Anton Wallner, D. G. Jenkins, A. Pavlik, Paolo Finocchiaro, E. Griesmayer, C. Domingo-Pardo, I. F. Gonçalves, M. Krtička, L. Cosentino, F. Calviño, M. Weigand, M. Kokkoris, F. Belloni, Mario Barbagallo, D. Schumann, W. Mondalaers, R. Vlastou, T. Martinez, G. Giubrone, M. A. Cortés-Giraldo, C. Weiss, P. M. Milazzo, J. Billowes, G. Tagliente, Damir Bosnar, P. Vaz, Alberto Ventura, T. Wright, M. Diakaki, K. Fraval, I. Duran, M. J. Vermeulen, R. Dressler, V. Variale, Roberto Versaci, C. Paradela, E. Berthoumieux, Petar Žugec, F. Becvar, A. Tsinganis, Nicola Colonna, L.S. Leong, Vasilis Vlachoudis, Alfredo Ferrari, A. J. M. Plompen, S. Altstadt, C. Lederer, Jeri Kroll, R. Sarmento, S. Schmidt, V. Bécares, H. Leeb, J. Perkowski, F. Gunsing, and Cristian Massimi

Subjects
Physics, Nuclear and High Energy Physics, Large Hadron Collider, 010308 nuclear & particles physics, Monte Carlo method, 01 natural sciences, 7. Clean energy, Neutron temperature, Nuclear physics, Neutron capture, Cross section (physics), Double beta decay, 0103 physical sciences, Neutron, Atomic physics, Nuclear Experiment, 010306 general physics, Beam (structure)
Abstract

The integral cross section of the 12C(n,p)12B reaction has been determined for the first time in the neutron energy range from threshold to several GeV at the n-TOF facility at CERN. The measurement relies on the activation technique with the β decay of 12B measured over a period of four half-lives within the same neutron bunch in which the reaction occurs. The results indicate that model predictions, used in a variety of applications, are mostly inadequate. The value of the integral cross section reported here can be used as a benchmark for verifying or tuning model calculations. © 2014 American Physical Society.

Published
2014
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6. Capture cross section of 236U: the n TOF results

Author

N. Kivel, A. J. M. Plompen, G. Cortes, F. Gunsing, J. Billowes, D. Tarrío, F. Mingrone, P. Vaz, J. Andrzejewski, Petar Žugec, J. L. Tain, F. Bečvář, Cristian Massimi, D. G. Jenkins, E. Mendoza, M. S. Robles, E. Jericha, Srinivasan Ganesan, Peter Schillebeeckx, Jeri Kroll, I. F. Gonçalves, Roberto Losito, Dorothea Schumann, D. Cano-Ott, C. Weiß, Fabio Belloni, M. Diakaki, K. Fraval, M. A. Cortés-Giraldo, R. Sarmento, A. Pavlik, C. Lampoudis, C. Domingo-Pardo, F. Cerutti, M. P. W. Chin, Rugard Dressler, A. Ventura, A. Manousos, C. Lederer, Mario Weigand, M. Sabaté-Gilarte, A. Mallick, F. Käppeler, G. Vannini, P. F. Mastinu, A. Tsinganis, Christoph Langer, Alberto Mengoni, J. Marganiec, Nicola Colonna, S. Altstadt, L.S. Leong, M. Mirea, Vasilis Vlachoudis, Javier Praena, C. Rubbia, G. Giubrone, E. Chiaveri, M. Krtička, G. Tagliente, V. Bécares, F. Calviño, E. Berthoumieux, W. Mondalaers, T. Martinez, H. Leeb, A. Hernández-Prieto, J. Perkowski, P. M. Milazzo, M. Mastromarco, Massimo Barbagallo, C. Carrapiço, T. J. Wright, Anton Wallner, C. Paradela, Carlos Guerrero, A. R. García, Rene Reifarth, L. Audouin, Stefan Schmidt, Vittorio Boccone, J. M. Quesada, M. Brugger, L. Tassan-Got, A. Riego, E. Leal-Cidoncha, C. Eleftheriadis, V. Variale, Thomas Rauscher, D. Karadimos, E. González-Romero, M. J. Vermeulen, S. Valenta, Marco Calviani, R. Vlastou, M. Kokkoris, Damir Bosnar, A. K. Saxena, Arnaud Ferrari, Y. Kadi, I. Duran, P. E. Koehler, T. Ware, E. Griesmayer, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions, Ventura, A., and Mengoni, A.

Subjects
Physics, Nuclear reaction, Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, Nuclear and High Energy Physics, Cross section, TOF, technology, industry, and agriculture, Capture, Nuclear data, Neutron, Nuclear physics, Cross section (physics), 236U, neutron capture, n_TOF, Nuclear reactions
Abstract

Neutron induced capture cross section on 236U has been measured with high accuracy and high resolution at n_TOF, in order to improve data libraries needed for the development of advanced nuclear reactors. Preliminary results obtained with two different detection systems are reported., JRC.D.4-Standards for Nuclear Safety, Security and Safeguards

Published
2014

7. Spin Measurements of n+87Sr for Level Density Studies

Author

S. Valenta, M. Mirea, F. Cerutti, Marco Calviani, J. L. Tain, V. Bécares, C. Lederer, Javier Praena, G. Tagliente, M. Krtička, E. Jericha, R. Vlastou, E. Berthoumieux, F. Calviño, M. P. W. Chin, I. Duran, H. Leeb, A. Hernández-Prieto, G. Vannini, Dorothea Schumann, C. Weiß, T. Martinez, C. Rubbia, J. Perkowski, Anton Tonchev, M. Mathelie, C. Paradela, T. Ware, E. Leal-Cidoncha, E. Chiaveri, P. F. Mastinu, Srinivasan Ganesan, V. Variale, T. J. Wright, Damir Bosnar, Y. Kadi, L. Audouin, S. Altstadt, Rene Reifarth, E. Griesmayer, Roberto Losito, Petar Žugec, C. Eleftheriadis, A. Riego, Carlos Guerrero, G. Cortes, Stefan Schmidt, D. Tarrío, Mario Barbagallo, K. Fraval, Cortés-Giraldo, Vittorio Boccone, F. Bečvář, J. M. Quesada, Thomas Rauscher, L. Tassan-Got, P. M. Milazzo, P. E. Koehler, E. Mendoza, M. J. Vermeulen, Rugard Dressler, Peter Schillebeeckx, Christoph Langer, D. G. Jenkins, I. F. Gonçalves, D. Karadimos, A. Tsinganis, Nicola Colonna, A. Ventura, Fabio Belloni, L.S. Leong, Vasilis Vlachoudis, E. González-Romero, A. R. García, F. Käppeler, M. Brugger, J. Billowes, M. Mastromarco, C. Carrapiço, Anton Wallner, P. Vaz, D. Cano-Ott, M. Diakaki, A. Manousos, A. J. M. Plompen, J. Marganiec, C. Lampoudis, A. Pavlik, Robles, C. Domingo-Pardo, M. Sabaté-Gilarte, W. Mondalaers, Bayarbadrakh Baramsai, F. Gunsing, Cristian Massimi, G. Giubrone, Gencho Rusev, Mario Weigand, M. Kokkoris, F. Mingrone, J. Andrzejewski, A. K. Saxena, Arnaud Ferrari, Alberto Mengoni, Jeri Kroll, R. Sarmento, G. E. Mitchell, 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, Ventura, A., and Mengoni, A.

Subjects
Physics, Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, Nuclear and High Energy Physics, education.field_of_study, Large Hadron Collider, Spins, Astrophysics::High Energy Astrophysical Phenomena, 87Sr, spin measurement, nuclear level density, n_TOF, Population, Nuclear physics, Nuclear data, Neutron, Spectral line, Spin, Detector array, Multiplicity (chemistry), education, Nuclear Experiment
Abstract

We have used the 4π BaF2 gamma-ray detector array at the n_TOF neutron time-of-flight facility at CERN for an experiment in order to determine the spins of resonances of n+87Sr by measuring the gamma-ray spectra and multiplicity distributions. The first results are presented here. We have assigned the orbital momentum to all evaluated resonances on the basis of their neutron widths. Further we have assigned the spin J to 16 s-wave resonances on based the population of low-lying levels., JRC.D.4-Standards for Nuclear Safety, Security and Safeguards

Published
2014

8. Measurement of the 242Pu(n,f) cross section at the CERN n TOF facility

Author

F. Becvar, Srinivasan Ganesan, A. Tsinganis, Nicola Colonna, L.S. Leong, F. Mingrone, J. Andrzejewski, M. B. Gómez-Hornillos, S. Andriamonje, Jeri Kroll, E. Mendoza, C. Langer, Peter Schillebeeckx, N. Dzysiuk, Roberto Losito, A. Manousos, P. F. Mastinu, R. Sarmento, M. Mastromarco, A. Mallick, G. Vannini, A. Riego, A. Hernández-Prieto, Massimo Barbagallo, C. Carrapiço, Anton Wallner, F. Gunsing, J. Marganiec, P. Vaz, Cristian Massimi, W. Mondalaers, S. Altstadt, R. Versaci, A. Ventura, D. Bosnar, A. J. M. Plompen, G. Cortes, P. M. Milazzo, D. Tarrío, C. Lederer, F. Käppeler, M. Kokkoris, M. Mirea, C. Rubbia, M. S. Robles, K. Fraval, Variale, Vlachoudis, A. Pavlik, C. Domingo-Pardo, F. Calviño, N. Kivel, E. Jericha, H. Leeb, M. Sabaté-Gilarte, J. Perkowski, G. Giubrone, M Krtiˇcka, Dorothea Schumann, T. Martinez, Rene Reifarth, E. Berthoumieux, P. Gurusamy, J. L. Tain, D. Cano-Ott, M. Diakaki, Stefan Schmidt, A. K. Saxena, Arnaud Ferrari, G. Tagliente, D. G. Jenkins, J. M. Quesada, L. Tassan-Got, I. F. Gonçalves, C. Paradela, Alberto Mengoni, J. Billowes, L. Audouin, T. J. Wright, Mario Weigand, M. A. Cortés-Giraldo, Fabio Belloni, Bécares, C. Lampoudis, Boccone, S. Valenta, P. Zugec, Marco Calviani, E. Leal-Cidoncha, C. Eleftheriadis, Thomas Rauscher, D. Karadimos, E. González-Romero, M. P. W. Chin, Carlos Guerrero, F. Roman, M. Meaze, M. J. Vermeulen, A. R. García, M. Brugger, P. E. Koehler, Javier Praena, C. Weiss, R. Vlastou, T. Ware, E. Griesmayer, Y. Kadi, F. Cerutti, I. Duran, Rugard Dressler, 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, Ventura, A., Mengoni, A., A. Tsingani, E. Berthoumieux, C. Guerrero, N. Colonna, M. Calviani, R. Vlastou, S. Andriamonje, V. Vlachoudi, F. Gunsing, C. Massimi, S. Altstadt, J. Andrzejewski, L. Audouin, M. Barbagallo, V. Becare, F. Becvar, F. Belloni, J. Billowe, V. Boccone, D. Bosnar, M. Brugger, F. Calvino, D. Cano-Ott, C. Carrapico, F. Cerutti, M. Chin, G. Corte, M. A. Cortes-Giraldo, M. Diakaki, C. Domingo-Pardo, I. Duran, R. Dressler, N. Dzysiuk, C. Eleftheriadi, A. Ferrari, K. Fraval, S. Ganesan, A. R. Garcia, G. Giubrone, M. B. Gomez-Hornillo, I. F. Goncalve, E. Gonzalez-Romero, E. Griesmayer, P. Gurusamy, A. Hernandez-Prieto, D. G. Jenkin, E. Jericha, Y. Kadi, F. Kaeppeler, D. Karadimo, N. Kivel, P. Koehler, M. Kokkori, M. Krticka, J. Kroll, C. Lampoudi, C. Langer, E. Leal-Cidoncha, C. Lederer, H. Leeb, L. S. Leong, R. Losito, A. Mallick, A. Manouso, J. Marganiec, T. Martinez, P. F. Mastinu, M. Mastromarco, M. Meaze, E. Mendoza, A. Mengoni, P. M. Milazzo, F. Mingrone, M. Mirea, W. Mondalaer, C. Paradela, A. Pavlik, J. Perkowski, A. Plompen, J. Praena, J. M. Quesada, T. Rauscher, R. Reifarth, A. Riego, M. S. Roble, F. Roman, C. Rubbia, M. Sabate-Gilarte, R. Sarmento, A. Saxena, P. Schillebeeckx, S. Schmidt, D. Schumann, G. Tagliente, J. L. Tain, D. Tarrio, L. Tassan-Got, S. Valenta, G. Vannini, V. Variale, P. Vaz, A. Ventura, R. Versaci, M. J. Vermeulen, A. Wallner, T. Ware, M. Weigand, C. Wei, T. Wright, and P. Zugec

Subjects
Physics, Nuclear reaction, Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, Nuclear and High Energy Physics, Fission, Large Hadron Collider, Cross section, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, CERN - n_TOF, Nuclear Theory, TOF, Nuclear data, Neutron, NEUTRON TIME OF FLIGHT, Neutons, NEUTRON INDUCED FISSION, 242Pu, neutron induced fission, n_TOF, Nuclear physics, Cross section (physics), Nuclear reactions, Nuclear Experiment
Abstract

The accurate knowledge of relevant nuclear data is crucial for the design of advanced nuclear systems. These data include neutron cross sections of various plutonium isotopes and other minor actinides. The 242Pu(n,f) cross section was measured at the CERN n_TOF facility, taking advantage of the wide energy range (from thermal to GeV) and the high instantaneous flux of the neutron beam. Preliminary results for the measurement are presented., JRC.D.4-Standards for Nuclear Safety, Security and Safeguards

Published
2014

9. Fission fragment angular distribution of 232Th(n,f) at the CERN n TOF facility

Author

G. Vannini, Srinivasan Ganesan, S. Valenta, Marco Calviani, Arnaud Ferrari, V. Bécares, M. P. W. Chin, Alberto Mengoni, F. Roman, M. J. Vermeulen, J. Billowes, D. Cano-Ott, C. Rubbia, M. Diakaki, R. Vlastou, J. Marganiec, M. A. Cortés-Giraldo, Damir Bosnar, Y. Kadi, C. Eleftheriadis, Thomas Rauscher, Javier Praena, T. Ware, I. F. Gonçalves, R. Versaci, D. Karadimos, J. L. Tain, A. Manousos, M. Kokkoris, C. Paradela, G. Cortes, E. González-Romero, E. Griesmayer, Fabio Belloni, M. B. Gómez-Hornillos, L. Audouin, Christoph Langer, A. R. García, D. Tarrío, S. Altstadt, M. Brugger, Rene Reifarth, P. M. Milazzo, E. Chiaveri, P. F. Mastinu, Stefan Schmidt, F. Bečvář, P. E. Koehler, Vittorio Boccone, J. M. Quesada, F. Cerutti, E. Mendoza, E. Jericha, L. Tassan-Got, F. Käppeler, C. Weiß, D. G. Jenkins, Peter Schillebeeckx, Carlos Guerrero, N. Dzysiuk, I. Duran, A. Ventura, P. Vaz, V. Variale, A. Pavlik, M. Krtička, C. Domingo-Pardo, G. Tagliente, T. Martinez, P. Gurusamy, K. Fraval, A. Riego, J. Andrzejewski, F. Mingrone, C. Lederer, Petar Žugec, W. Mondalaers, G. Giubrone, M. Mastromarco, Massimo Barbagallo, C. Carrapiço, Anton Wallner, T. J. Wright, M. Meaze, E. Berthoumieux, L. S. Leong, Roberto Losito, Jeri Kroll, A. Tsinganis, Nicola Colonna, Mario Weigand, Vasilis Vlachoudis, R. Sarmento, F. Gunsing, Cristian Massimi, M. Mirea, F. Calviño, H. Leeb, J. Perkowski, A. J. M. Plompen, 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, Ventura, A., and Mengoni, A.

Subjects
Physics, Nuclear reaction, Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, Nuclear and High Energy Physics, Large Hadron Collider, cross section, Fragment (computer graphics), Fission, Physics::Instrumentation and Detectors, Nuclear Theory, TOF, Nuclear data, 232Th, n_TOF, fission fragments, angular distribution, Nuclear physics, Cross section (physics), Angular distribution, neutron, Physics::Accelerator Physics, fission, Neutron, Nuclear Experiment, nuclear reactions
Abstract

The angular distribution of fragments emitted in neutron-induced fission of 232Th was measured in the white spectrum neutron beam at the n_TOF facility at CERN. A reaction chamber based on Parallel Plate Avalanche Counters (PPAC) was used, where the detectors and the targets have been tilted 45 degrees with respect to the neutron beam direction in order to cover the full angular range of the fission fragments. A GEANT4 simulation has been developed to study the setup efficiency. The data analysis and the preliminary results obtained for the 232Th(n,f) between fission threshold and 100 MeV are presented here., JRC.D.4-Standards for Nuclear Safety, Security and Safeguards

Published
2014

10. Measurement and analysis of theAm241(n,γ) cross section with liquid scintillator detectors using time-of-flight spectroscopy at the n_TOF facility at CERN

Author

A. Mallick, G. Vannini, I. F. Gonçalves, Fabio Belloni, A. R. García, M. Kokkoris, A. Manousos, J. Andrzejewski, M. Mastromarco, M. Brugger, Petar Žugec, C. Carrapiço, J. Marganiec, Anton Wallner, Y. Kadi, G. Cortes, D. Tarrío, Srinivasan Ganesan, F. Mingrone, Rene Reifarth, A. Mengoni, F. Bečvář, C. Lederer, E. Chiaveri, M. P. W. Chin, A. K. Saxena, P. F. Mastinu, T. Ware, Christoph Langer, Arnaud Ferrari, E. Mendoza, W. Mondalaers, Stefan Schmidt, Mario Barbagallo, Peter Schillebeeckx, N. Dzysiuk, Vittorio Boccone, S. Valenta, Marco Calviani, F. Roman, J. M. Quesada, L. Tassan-Got, G. Giubrone, C. Paradela, J. Billowes, A. Riego, L. Audouin, E. Griesmayer, E. Leal-Cidoncha, M. S. Robles, C. Eleftheriadis, P. M. Milazzo, R. Vlastou, D. G. Jenkins, Thomas Rauscher, E. Berthoumieux, K. Fraval, D. Cano-Ott, M. Diakaki, V. Variale, D. Karadimos, M. Krtička, G. Tagliente, M. Meaze, Roberto Versaci, T. Martinez, M. J. Vermeulen, E. González-Romero, M.B. Gómez-Hornillos, S. Altstadt, A. Hernández-Prieto, Carlos Guerrero, P. E. Koehler, T. J. Wright, A. Ventura, I. Duran, Jeri Kroll, R. Sarmento, A. J. M. Plompen, Rugard Dressler, A. Tsinganis, Nicola Colonna, L.S. Leong, Vasilis Vlachoudis, Roberto Losito, M. Mirea, F. Calviño, H. Leeb, D. Bosnar, J. Perkowski, Javier Praena, F. Cerutti, P. Vaz, F. Gunsing, C. Lampoudis, A. Pavlik, C. Domingo-Pardo, M. Sabaté-Gilarte, Cristian Massimi, P. Gurusamy, Mario Weigand, F. Käppeler, M. A. Cortés-Giraldo, E. Jericha, V. Bécares, Dorothea Schumann, C. Weiß, J. L. Tain, Niko Kivel, and C. Rubbia

Subjects
Physics, Nuclear and High Energy Physics, Large Hadron Collider, Deuterated benzene, 010308 nuclear & particles physics, Resonance, Scintillator, 01 natural sciences, 7. Clean energy, Nuclear physics, Time of flight, Neutron capture, Cross section (physics), chemistry.chemical_compound, chemistry, 0103 physical sciences, Atomic physics, 010306 general physics, Spectroscopy
Abstract

The ^241 Am(n,γ) cross section has been measured at the n_TOF facility at CERN using deuterated benzene liquid scintillators, commonly known as C_6D_6 detectors, and time-of-flight spectrometry. The results in the resolved resonance range bring new constraints to evaluations below 150 eV, and the energy upper limit was extended from 150 to 320 eV with a total of 172 new resonances not present in current evaluations. The thermal capture cross section was found to be σ_th=678±68 b, which is in good agreement with evaluations and most previous measurements. The capture cross section in the unresolved resonance region was extracted in the remaining energy range up to 150 keV, and found to be larger than current evaluations and previous measurements.

Published
2014
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11. The nucleosynthesis of heavy elements in Stars: the key isotope 25Mg

Author

P. F. Mastinu, K. Fraval, M. Krtička, F. Calviño, T. Martinez, A. J. M. Plompen, J. L. Tain, Rene Reifarth, E. Chiaveri, Javier Praena, J. M. Quesada, L. Tassan-Got, F. Mingrone, J. Andrzejewski, F. Gunsing, C. Lampoudis, A. Riego, Srinivasan Ganesan, A. K. Saxena, G. Tagliente, Arnaud Ferrari, A. Pavlik, A. Hernández-Prieto, Cristian Massimi, Mario Barbagallo, A. Mallick, G. Vannini, C. Domingo-Pardo, M. Sabaté-Gilarte, F. Cerutti, Carlos Guerrero, Alberto Mengoni, T. Ware, Jeri Kroll, E. Griesmayer, A. Ventura, C. Rubbia, Roberto Losito, R. Sarmento, A. Tsinganis, G. Cortes, D. Tarrío, P. E. Koehler, P. Vaz, G. Giubrone, Rugard Dressler, E. Jericha, C. Paradela, I. Duran, L. Audouin, N. Kivel, Dorothea Schumann, Nicola Colonna, L.S. Leong, Vasilis Vlachoudis, C. Weiß, P. M. Milazzo, M. Mastromarco, C. Carrapiço, Anton Wallner, F. Bečvář, W. Mondalaers, E. Mendoza, Stefan Kopecky, D. G. Jenkins, Peter Schillebeeckx, F. Käppeler, S. Altstadt, V. Bécares, M. A. Cortés-Giraldo, R. Vlastou, E. Berthoumieux, Petar Žugec, A. Manousos, J. Marganiec, J. Billowes, M. S. Robles, D. Cano-Ott, M. Diakaki, T. J. Wright, I. F. Gonçalves, Fabio Belloni, Sebastian Schmidt, M. Mirea, H. Leeb, J. Perkowski, Mario Weigand, Damir Bosnar, Y. Kadi, S. Valenta, Marco Calviani, M. J. Vermeulen, V. Variale, E. Leal-Cidoncha, C. Eleftheriadis, Thomas Rauscher, D. Karadimos, E. González-Romero, M. P. W. Chin, A. R. García, M. Brugger, Christoph Langer, C. Lederer, Mengoni, A., 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, Lunardi, S., Massimi, C., Koehler, P., Kopecky, S., Mingrone, F., Schillebeeckx, P., Vannini, G., Altstadt, S., Andrzejewski, J., Audouin, L., Barbagallo, M., Bécares, V., Bečvář, F., Belloni, F., Berthoumieux, E., Billowes, J., Bosnar, D., Brugger, M., Calviani, M., Calviño, F., Cano-Ott, D., Carrapiço, C., Cerutti, F., Chiaveri, E., Chin, M., Colonna, N., Cortés, G., Cortés-Giraldo, M.A., Diakaki, M., Domingo-Pardo, C., Duran, I., Dressler, R., Eleftheriadis, C., Ferrari, A., Fraval, K., Ganesan, S., García, A.R., Giubrone, G., Gonçalves, I.F., González-Romero, E., Griesmayer, E., Guerrero, C., Gunsing, F., Hernández-Prieto, A., Jenkins, D.G., Jericha, E., Kadi, Y., Käppeler, F., Karadimos, D., Kivel, N., Krtička, M., Kroll, J., Lampoudis, C., Langer, C., Leal-Cidoncha, E., Lederer, C., Leeb, H., Leong, L.S., Losito, R., Mallick, A., Manousos, A., Marganiec, J., Martínez, T., Mastinu, P.F., Mastromarco, M., Mendoza, E., Milazzo, P.M., Mirea, M., Mondalaers, W., Paradela, C., Pavlik, A., Perkowski, J., Plompen, A., Praena, J., Quesada, J.M., Rauscher, T., Reifarth, R., Riego, A., Robles, M.S., Rubbia, C., Sabaté-Gilarte, M., Sarmento, R., Saxena, A., Schmidt, S., Schumann, D., Tagliente, G., Tain, J.L., Tarrío, D., Tassan-Got, L., Tsinganis, A., Valenta, S., Variale, V., Vaz, P., Ventura, A., Vermeulen, M.J., Vlachoudis, V., Vlastou, R., Wallner, A., Ware, T., Weigand, M., Weiß, C., Wright, T., and Žugec, P.

Subjects
Physics, Nuclear reaction, Energies::Energia nuclear [Àrees temàtiques de la UPC], Isotope, Stable isotope ratio, Physics::Instrumentation and Detectors, 25Mg, stellar nucleosynthesis, neutron capture, Astrophysics::High Energy Astrophysical Phenomena, QC1-999, Nuclear energy, Neutron temperature, Nuclear physics, Physics and Astronomy (all), Nucleosynthesis, Energia nuclear, Neutron, s-process, Nuclear Experiment, Isotopes of magnesium
Abstract

We have measured the radiative neutron-capture cross section and the total neutron-induced cross section of one of the most important isotopes for the s process, the 25Mg. The measurements have been carried out at the neutron time-of-flight facilities n-TOF at CERN (Switzerland) and GELINA installed at the EC-JRC-IRMM (Belgium). The cross sections as a function of neutron energy have been measured up to approximately 300 keV, covering the energy region of interest to the s process. The data analysis is ongoing and preliminary results show the potential relevance for the s process. © Owned by the authors, published by EDP Sciences, 2014.

Published
2014

12. Ni62(n,γ) andNi63(n,γ) cross sections measured at the n_TOF facility at CERN

Author

I. Duran, N. Colonna, T. Ware, E. Griesmayer, A. R. García, G. Vannini, M. Fernandez-Ordonez, M. Brugger, Matthias Heil, E. Lebbos, Christoph Langer, Manuel Lozano, C. Carrapiço, C. Eleftheriadis, W. Mondalaers, Y. Kadi, A. Ventura, F. Gunsing, Thomas Rauscher, V. Bécares, P. M. Milazzo, Ralf Plag, D. Karadimos, G. Giubrone, G. Tagliente, Srinivasan Ganesan, D. G. Jenkins, E. González-Romero, Cristian Massimi, A. Mengoni, G. Cortes, M. P. W. Chin, D. Tarrío, Lukas Tlustos, K. Fraval, A. Manousos, F. Roman, M. A. Cortés-Giraldo, Rene Reifarth, M. Mastromarco, M. Meaze, M. J. Vermeulen, S. Andriamonje, Javier Praena, J. Andrzejewski, J. Marganiec, Arnaud Ferrari, Stefan Schmidt, K. G. Ioannides, Anton Wallner, Gunther Korschinek, Vittorio Boccone, J. M. Quesada, F. Mingrone, P. Gurusamy, S. Valenta, P. Zugec, I. F. Gonçalves, J. Billowes, L. Tassan-Got, Carlos Guerrero, Mario Barbagallo, C. Lederer, Mario Weigand, Marco Calviani, B. Berthier, M.B. Gómez-Hornillos, Jeri Kroll, F. Kaeppeler, Fabio Belloni, I. Dillmann, F. Cerutti, M. Mirea, D. Cano-Ott, E. Jericha, C. Weiss, Dorothea Schumann, E. Mendoza, F. Calviño, H. Leeb, J. Perkowski, V. Variale, Roberto Versaci, Peter Schillebeeckx, N. Dzysiuk, R. Sarmento, S. Harrisopulos, S. Altstadt, A. J. M. Plompen, A. Riego, A. Pavlik, C. Domingo-Pardo, T. J. Wright, R. Vlastou, E. Berthoumieux, P. Vaz, D. Bosnar, E. Chiaveri, Rugard Dressler, F. Becvar, A. Tsinganis, L.S. Leong, Vasilis Vlachoudis, C. Paradela, L. Audouin, C. Rubbia, Roberto Losito, F. Gramegna, S. Marrone, P. F. Mastinu, Marco Pignatari, M. Krtička, T. Martinez, J. L. Tain, and Niko Kivel

Subjects
Physics, Nuclear and High Energy Physics, Fission, Astrophysics::High Energy Astrophysical Phenomena, Resonance, Nuclear data, 7. Clean energy, 01 natural sciences, Neutron temperature, Nuclear physics, Nucleosynthesis, 0103 physical sciences, Production (computer science), Neutron, Atomic physics, Nuclear Experiment, 010306 general physics, s-process, 010303 astronomy & astrophysics
Abstract

The cross section of the $^{62}\mathrm{Ni}$($n,\ensuremath{\gamma}$) reaction was measured with the time-of-flight technique at the neutron time-of-flight facility n_TOF at CERN. Capture kernels of 42 resonances were analyzed up to 200 keV neutron energy and Maxwellian averaged cross sections (MACS) from $kT=$ 5--100 keV were calculated. With a total uncertainty of $4.5$%, the stellar cross section is in excellent agreement with the the KADoNiS compilation at $kT=30$ keV, while being systematically lower up to a factor of 1.6 at higher stellar temperatures. The cross section of the $^{63}\mathrm{Ni}$($n,\ensuremath{\gamma}$) reaction was measured for the first time at n_TOF. We determined unresolved cross sections from 10 to 270 keV with a systematic uncertainty of 17%. These results provide fundamental constraints on $s$-process production of heavier species, especially the production of Cu in massive stars, which serve as the dominant source of Cu in the solar system.

Published
2014
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13. Measurements of neutron cross sections for advanced nuclear energy systems at n-TOF (CERN)

Author

Srinivasan Ganesan, M. Mirea, A. Hernández-Prieto, G. Vannini, H. Leeb, J. L. Tain, J. Perkowski, W. Mondalaers, V. Variale, Christoph Langer, F. Gunsing, G. Tagliente, N. Kivel, Rene Reifarth, A. Manousos, Cristian Massimi, Stefan Schmidt, A. Riego, T. J. Wright, J. M. Quesada, G. Cortes, J. Marganiec, M. Krtička, D. Tarrío, L. Tassan-Got, G. Giubrone, F. Calviño, C. Rubbia, Petar Žugec, A. K. Saxena, Arnaud Ferrari, T. Martinez, Roberto Losito, J. Billowes, F. Mingrone, J. Andrzejewski, F. Bečvář, Mario Weigand, M. Mastromarco, E. Chiaveri, P. F. Mastinu, E. Mendoza, F. Käppeler, Massimo Barbagallo, C. Carrapiço, Anton Wallner, Rugard Dressler, A. Pavlik, C. Lampoudis, D. Cano-Ott, A. Ventura, Peter Schillebeeckx, C. Lederer, N. Colonna, C. Domingo-Pardo, M. Diakaki, P. M. Milazzo, A. Tsinganis, R. Vlastou, E. Berthoumieux, Alberto Mengoni, M. Sabaté-Gilarte, L.S. Leong, I. F. Gonçalves, Vasilis Vlachoudis, E. Leal-Cidoncha, K. Fraval, S. Altstadt, C. Paradela, Fabio Belloni, C. Eleftheriadis, L. Audouin, V. Bécares, Thomas Rauscher, Damir Bosnar, D. Karadimos, P. Vaz, E. González-Romero, Y. Kadi, E. Jericha, Dorothea Schumann, M. P. W. Chin, C. Weiß, Carlos Guerrero, A. R. García, M. Brugger, M. J. Vermeulen, P. E. Koehler, S. Valenta, F. Cerutti, Marco Calviani, I. Duran, T. Ware, E. Griesmayer, Javier Praena, D. G. Jenkins, M. A. Cortés-Giraldo, Jeri Kroll, R. Sarmento, A. J. M. Plompen, Ventura, A., Mengoni, A., 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, Lunardi, S., Barbagallo, M., Colonna, N., Altstadt, S., Andrzejewski, J., Audouin, L., Bécares, V., Bečvář, F., Belloni, F., Berthoumieux, E., Billowes, J., Bosnar, D., Brugger, M., Calviani, M., Calviño, F., Cano-Ott, D., Carrapiço, C., Cerutti, F., Chiaveri, E., Chin, M., Cortés, G., Cortés-Giraldo, M.A., Diakaki, M., Domingo-Pardo, C., Duran, I., Dressler, R., Eleftheriadis, C., Ferrari, A., Fraval, K., Ganesan, S., García, A.R., Giubrone, G., Gonçalves, I.F., González-Romero, E., Griesmayer, E., Guerrero, C., Gunsing, F., Hernández-Prieto, A., Jenkins, D.G., Jericha, E., Kadi, Y., Käppeler, F., Karadimos, D., Kivel, N., Koehler, P., Krtička, M., Kroll, J., Lampoudis, C., Langer, C., Leal-Cidoncha, E., Lederer, C., Leeb, H., Leong, L.S., Losito, R., Manousos, A., Marganiec, J., Martínez, T., Massimi, C., Mastinu, P.F., Mastromarco, M., Mendoza, E., Milazzo, P.M., Mingrone, F., Mirea, M., Mondalaers, W., Paradela, C., Pavlik, A., Perkowski, J., Plompen, A., Praena, J., Quesada, J.M., Rauscher, T., Reifarth, R., Riego, A., Rubbia, C., Sabaté-Gilarte, M., Sarmento, R., Saxena, A., Schillebeeckx, P., Schmidt, S., Schumann, D., Tagliente, G., Tain, J.L., Tarrío, D., Tassan-Got, L., Tsinganis, A., Valenta, S., Vannini, G., Variale, V., Vaz, P., Vermeulen, M.J., Vlachoudis, V., Vlastou, R., Wallner, A., Ware, T., Weigand, M., Weiß, C., Wright, T., and Žugec, P.

Subjects
Nuclear reaction, Physics, Energies::Energia nuclear [Àrees temàtiques de la UPC], QC1-999, Nuclear Theory, Nuclear data, Nuclear energy, Neutron radiation, Nuclear physics, Uranium-236, Physics and Astronomy (all), Plutonium-242, Nuclear astrophysics, Neutron source, Energia nuclear, Physics::Accelerator Physics, Neutron, neutron cross sections, n_TOF, advanced nuclear energy systems, Nuclear Experiment
Abstract

The n-TOF facility operates at CERN with the aim of addressing the request of high accuracy nuclear data for advanced nuclear energy systems as well as for nuclear astrophysics. Thanks to the features of the neutron beam, important results have been obtained on neutron induced fission and capture cross sections of U, Pu and minor actinides. Recently the construction of another beam line has started; the new line will be complementary to the first one, allowing to further extend the experimental program foreseen for next measurement campaigns. © Owned by the authors, published by EDP Sciences, 2014.

Published
2014

14. The (n, α) reaction in the s-process branching point 59Ni

Author

S. Valenta, Marco Calviani, R. Vlastou, Damir Bosnar, M. Meaze, M. J. Vermeulen, Srinivasan Ganesan, Mario Barbagallo, F. Gunsing, Cristian Massimi, F. Bečvář, V. Bécares, E. Jericha, Dorothea Schumann, C. Weiß, Mario Weigand, Alfredo Ferrari, M. Mirea, Rene Reifarth, M. B. Gómez-Hornillos, Stefan Schmidt, Vittorio Boccone, L. Audouin, H. Leeb, J. M. Quesada, P. M. Milazzo, S. Altstadt, J. Perkowski, Rugard Dressler, E. Chiaveri, D. Cano-Ott, G. Cortes, D. G. Jenkins, Laurent Tassan-Got, G. Giubrone, F. Käppeler, A. Tsinganis, C. Eleftheriadis, D. Tarrío, A. Hernández-Prieto, E. Mendoza, C. Lampoudis, Peter Schillebeeckx, R. Versaci, N. Dzysiuk, Yacine Kadi, Nicola Colonna, L.S. Leong, F. Mingrone, J. Andrzejewski, M. Kokkoris, P. Vaz, J. Billowes, Carlo Rubbia, M. Mastromarco, Alberto Ventura, E. Griesmayer, T. J. Wright, Cortés-Giraldo, C. Langer, V. Vlachoudis, A. Pavlik, Carlos Guerrero, C. Domingo-Pardo, N. Kivel, C. Carrapiço, Anton Wallner, M. Sabaté-Gilarte, A. K. Saxena, E. Berthoumieux, C. Paradela, P. Gurusamy, M. Diakaki, W. Mondalaers, A. Mallick, G. Vannini, Roberto Losito, Petar Žugec, A. Manousos, F. Cerutti, Javier Praena, Fabio Belloni, M. P. W. Chin, F. Roman, E. Leal-Cidoncha, I. Goncalves, G. Tagliente, Thomas Rauscher, D. Karadimos, A. R. García, M. Brugger, T. Ware, V. Variale, Robles, P. E. Koehler, Alberto Mengoni, J. L. Tain, I. Duran, A. Riego, Gerald Badurek, C. Lederer, J. Marganiec, P. F. Mastinu, M. Krtička, F. Calviño, T. Martinez, E. Gonzalez-Romero, K. Fraval, A. J. M. Plompen, Jeri Kroll, R. Sarmento, Ventura, A., Mengoni, A., Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, n_TOF Collaboration, 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, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, Nuclear and High Energy Physics, Cross section, TOF, Resonance, Nuclear data, Diamond, Alpha particle, Neutron, engineering.material, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 59Ni, neutron capture, n_TOF, s-proces branching point, Nuclear physics, Nuclear reactins, engineering, Nuclear astrophysics, s-process, Embrittlement, Nucleosynthesis
Abstract

See paper for full list of authors; International audience; The (n, α) reaction in the radioactive 59Ni is of relevance in nuclear astrophysics as 59Ni can be considered as the first branching point in the astrophysical s-process. Its relevance in nuclear technology is especially related to material embrittlement in stainless steel. However, there is a discrepancy between available experimental data and the evaluated nuclear data files for this reaction. At the n_TOF facility at CERN, a dedicated system based on sCVD diamond diodes was set up to measure the 59Ni(n, α)56Fe cross section. The results of this measurement, with special emphasis on the dominant resonance at 203 eV, are presented here.

Published
2014
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15. The CERN n_TOF Facility: Neutron Beams Performances for Cross Section Measurements

Author

F. Mingrone, J. Andrzejewski, C. Langer, N. Kivel, V. Bécares, C. Lederer, A. R. García, P. Gurusamy, G. Tagliente, M. Brugger, Rene Reifarth, E. Jericha, Stefan Schmidt, I. F. Gonçalves, M. Mastromarco, Vittorio Boccone, J. M. Quesada, Dorothea Schumann, L. Tassan-Got, J. L. Tain, S. Valenta, A. Mallick, G. Vannini, G. Cortes, T. J. Wright, D. Tarrío, Marco Calviani, Fabio Belloni, C. Carrapiço, Anton Wallner, C. Paradela, M. Krtička, L. Audouin, A. Hernández-Prieto, S. Altstadt, A. K. Saxena, Arnaud Ferrari, G. Giubrone, T. Martinez, A. Riego, Alberto Mengoni, E. Leal-Cidoncha, C. Eleftheriadis, Thomas Rauscher, V. Variale, W. Mondalaers, Petar Žugec, F. Cerutti, A. Manousos, Srinivasan Ganesan, F. Bečvář, F. Gunsing, D. Karadimos, J. Marganiec, Cristian Massimi, M. Meaze, M. J. Vermeulen, P. F. Mastinu, Mario Barbagallo, R. Versaci, E. Mendoza, E. González-Romero, M. B. Gómez-Hornillos, M. Kokkoris, Peter Schillebeeckx, N. Dzysiuk, J. Billowes, C. Weiss, R. Vlastou, M. P. W. Chin, Roberto Losito, D. G. Jenkins, Rugard Dressler, Damir Bosnar, Y. Kadi, Javier Praena, M. S. Robles, F. Roman, E. Berthoumieux, A. Tsinganis, F. Käppeler, P. M. Milazzo, Nicola Colonna, D. Cano-Ott, L.S. Leong, I. Duran, Vasilis Vlachoudis, M. Diakaki, M. A. Cortés-Giraldo, Mario Weigand, A. Ventura, K. Fraval, M. Mirea, F. Calviño, H. Leeb, J. Perkowski, P. E. Koehler, T. Ware, E. Griesmayer, Carlos Guerrero, A. J. M. Plompen, P. Vaz, Jeri Kroll, A. Pavlik, R. Sarmento, C. Domingo-Pardo, M. Sabaté-Gilarte, E. Chiaveri, C. Rubbia, C. Lampoudis, E. Chiaveri, S. Altstadt, J. Andrzejewski, L. Audouin, M. Barbagallo, V. Becare, F. Becvar, F. Belloni, E. Berthoumieux, J. Billowe, V. Boccone, D. Bosnar, M. Brugger, M. Calviani, F. Calvino, D. Cano-Ott, C. Carrapico, F. Cerutti, M. Chin, N. Colonna, G. Corte, M. A. Cortes-Giraldo, M. Diakaki, C. Domingo-Pardo, I. Duran, R. Dressler, N. Dzysiuk, C. Eleftheriadi, A. Ferrari, K. Fraval, S. Ganesan, A. R. Garcia, G. Giubrone, M. B. Gomez-Hornillo, I. F. Goncalve, E. Gonzalez-Romero, E. Griesmayer, C. Guerrero, F. Gunsing, P. Gurusamy, A. Hernandez-Prieto, D. G. Jenkin, E. Jericha, Y. Kadi, F. Kaeppeler, D. Karadimo, N. Kivel, P. Koehler, M. Kokkori, M. Krticka, J. Kroll, C. Lampoudi, C. Langer, E. Leal-Cidoncha, C. Lederer, H. Leeb, L. S. Leong, R. Losito, A. Mallick, A. Manouso, J. Marganiec, T. Martinez, C. Massimi, P. F. Mastinu, M. Mastromarco, M. Meaze, E. Mendoza, A. Mengoni, P. M. Milazzo, F. Mingrone, M. Mirea, W. Mondalaer, C. Paradela, A. Pavlik, J. Perkowski, A. Plompen, J. Praena, J. M. Quesada, T. Rauscher, R. Reifarth, A. Riego, M. S. Roble, F. Roman, C. Rubbia, M. Sabate-Gilarte, R. Sarmento, A. Saxena, P. Schillebeeckx, S. Schmidt, D. Schumann, G. Tagliente, J. L. Tain, D. Tarrio, L. Tassan-Got, A. Tsingani, S. Valenta, G. Vannini, V. Variale, P. Vaz, A. Ventura, R. Versaci, M. J. Vermeulen, V. Vlachoudi, R. Vlastou, A. Wallner, T. Ware, M. Weigand, C. Wei, T. Wright, P. Zugec, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions, Ventura, A., and Mengoni, A.

Subjects
Physics, Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, Nuclear and High Energy Physics, Large Hadron Collider, Cross section, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, TOF, CERN - n_TOF, n_TOF, CERN, cross section measurements, Nuclear data, Beam, Neutron, Neutron radiation, Nuclear physics, Cross section (physics), Neutron flux, High activity, Nuclear Experiment, Beam (structure)
Abstract

This paper presents the characteristics of the existing CERN n_TOF neutron beam facility (n_TOF-EAR1 with a flight path of 185 meters) and the future one (n_TOF EAR-2 with a flight path of 19 meters), which will operate in parallel from Summer 2014. The new neutron beam will provide a 25 times higher neutron flux delivered in 10 times shorter neutron pulses, thus offering more powerful capabilities for measuring small mass, low cross section and/or high activity samples., JRC.D.4-Standards for Nuclear Safety, Security and Safeguards

Published
2014

16. A Micromegas Detector for Neutron Beam Imaging at the n_TOF Facility at CERN

Author

Stefan Schmidt, C. Eleftheriadis, Thomas Rauscher, Vittorio Boccone, J. M. Quesada, L. Tassan-Got, D. Karadimos, V. Variale, C. Lederer, Arnaud Ferrari, K. Fraval, E. González-Romero, S. Andriamonje, M. Krtička, F. Calviño, A. Manousos, E. Berthoumieux, J. Pancin, F. Gunsing, P. F. Mastinu, A. Pavlik, C. Weiss, R. Vlastou, J. Marganiec, A. Tsinganis, T. Ware, Cristian Massimi, A. R. García, A. Ventura, V. Bécares, Nicola Colonna, L.S. Leong, G. Cortes, C. Domingo-Pardo, Damir Bosnar, G. Tagliente, Vasilis Vlachoudis, M. B. Gómez-Hornillos, M. Brugger, Y. Kadi, D. Tarrío, J. Billowes, R. Versaci, E. Griesmayer, W. Mondalaers, Y. Giomataris, M. Kokkoris, M. Kebbiri, P. Gurusamy, Roberto Losito, T. Papaevangelou, M. P. W. Chin, Srinivasan Ganesan, M. Mirea, I. F. Gonçalves, G. Giubrone, F. Roman, P. M. Milazzo, D. G. Jenkins, F. Bečvář, G. Vannini, M.A. Corté-Giraldo, M. Meaze, D. Cano-Ott, M. J. Vermeulen, M. Mastromarco, F. Mingrone, H. Leeb, J. Andrzejewski, Fabio Belloni, M. Diakaki, A. Riego, Mario Barbagallo, E. Mendoza, J. Perkowski, C. Paradela, S. Valenta, C. Carrapiço, Anton Wallner, C. Langer, E. Jericha, Peter Schillebeeckx, P. E. Koehler, Marco Calviani, L. Audouin, N. Dzysiuk, Mario Weigand, P. Vaz, S. Altstadt, E. Chiaveri, T. Marítnez, I. Duran, T. J. Wright, F. Käppeler, Petar Žugec, Carlos Guerrero, A. J. M. Plompen, F.J. Iguaz, Jeri Kroll, R. Sarmento, Javier Praena, Alberto Mengoni, F. Cerutti, C. Rubbia, J. L. Tain, Rene Reifarth, 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, Ventura, A., and Mengoni, A.

Subjects
Physics, Bonner sphere, Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, MicroMegas detector, Detector, Neutron, Neutron radiation, MGAS, n_TOF, neutron beam imaging, 7. Clean energy, 01 natural sciences, Neutron time-of-flight scattering, Neutron temperature, Nuclear physics, 13. Climate action, 0103 physical sciences, Neutron detection, Nuclear reactions, 010306 general physics, Nuclear Experiment, Beam (structure)
Abstract

Micromegas (Micro-MEsh Gaseous Structure) detectors are gas detectors consisting of a stack of one ionization and one proportional chamber. A micromesh separates the two communicating regions, where two different electric fields establish respectively a charge drift and a charge multiplication regime. The n_TOF facility at CERN provides a white neutron beam (from thermal up to GeV neutrons) for neutron induced cross section measurements. These measurements need a perfect knowlodge of the incident neutron beam, in particular regarding its spatial profile. A position sensitive micromegas detector equipped with a 10B based neutron/charged particle converter has been extensively used at the n_TOF facility for characterizing the neutron beam profile and extracting the beam interception factor for samples of different size. The boron converter allowed to scan the energy region of interest for neutron induced capture reactions as a function of the neutron energy, determined by the time of flight. Experimental results will be presented and compared to simulations, performed by means of the FLUKA code., JRC.D.4-Standards for Nuclear Safety, Security and Safeguards

Published
2014

17. Neutron cross-sections for advanced nuclear systems: The n-TOF project at CERN

Author

G. Tagliente, V. Variale, F. Cerutti, Mario Weigand, M. P. W. Chin, Y. Kadi, C. Lederer, R. Vlastou, E. Chiaveri, C. Paradela, G. Giubrone, P. F. Mastinu, E. Berthoumieux, A. Manousos, S. Valenta, P. Vaz, L. Audouin, Rugard Dressler, Marco Calviani, M. Mirea, Christoph Langer, J. Marganiec, A. Tsinganis, T. Ware, F. Mingrone, J. Andrzejewski, Javier Praena, Petar Žugec, S. Altstadt, A. Ventura, E. Leal-Cidoncha, A. K. Saxena, Arnaud Ferrari, Srinivasan Ganesan, M. Krtička, E. Jericha, C. Eleftheriadis, F. Calviño, E. Griesmayer, L.S. Leong, H. Leeb, Vasilis Vlachoudis, F. Käppeler, Dorothea Schumann, C. Weiß, F. Bečvář, T. Martinez, J. Perkowski, J. Billowes, E. Mendoza, I. F. Gonçalves, M. A. Cortés-Giraldo, M. J. Vermeulen, M. Mastromarco, F. Gunsing, Peter Schillebeeckx, C. Lampoudis, A. Hernández-Prieto, Massimo Barbagallo, Thomas Rauscher, N. Colonna, D. Bosnar, C. Carrapiço, Cristian Massimi, Anton Wallner, Fabio Belloni, D. Karadimos, A. Riego, Jeri Kroll, Roberto Losito, V. Bécares, I. Duran, E. González-Romero, T. J. Wright, D. Cano-Ott, Rene Reifarth, R. Sarmento, K. Fraval, A. J. M. Plompen, M. Diakaki, A. R. García, W. Mondalaers, Carlos Guerrero, M. Brugger, A. Pavlik, C. Domingo-Pardo, D. G. Jenkins, M. Sabaté-Gilarte, P. E. Koehler, P. M. Milazzo, G. Cortes, D. Tarrío, G. Vannini, C. Rubbia, Stefan Schmidt, J. M. Quesada, L. Tassan-Got, Alberto Mengoni, J. L. Tain, Niko Kivel, Sarkadi, L., Barbagallo, M, Mastromarco, M., Colonna, N., Altstadt, S., Andrzejewski, J., Audouin, L., Bécares, V., Bečvář, F., Belloni, F., Berthoumieux, E., Billowes, J., Bosnar, D., Brugger, M., Calviani, M., Calviño, F., Cano-Ott, D., Carrapiço, C., Cerutti, F., Chiaveri, E., Chin, M., Cortés, G., Cortés-Giraldo, M.A., Diakaki, M., Domingo-Pardo, C., Duran, I., Dressler, R., Eleftheriadis, C., Ferrari, A., Fraval, K., Ganesan, S., García, A.R., Giubrone, G., Gonçalves, I.F., González-Romero, E., Griesmayer, E., Guerrero, C., Gunsing, F., Hernández-Prieto, A., Jenkins, D.G., Jericha, E., Kadi, Y., Käppeler, F., Karadimos, D., Kivel, N., Koehler, P., Krtička, M., Kroll, J., Lampoudis, C., Langer, C., Leal-Cidoncha, E., Lederer, C., Leeb, H., Leong, L.S., Losito, R., Manousos, A., Marganiec, J., Martínez, T., Massimi, C., Mastinu, P.F., Mendoza, E., Mengoni, A., Milazzo, P.M., Mingrone, F., Mirea, M., Mondalaers, W., Paradela, C., Pavlik, A., Perkowski, J., Plompen, A., Praena, J., Quesada, J.M., Rauscher, T., Reifarth, R., Riego, A., Rubbia, C., Sabaté-Gilarte, M., Sarmento, R., Saxena, A., Schillebeeckx, P., Schmidt, S., Schumann, D., Tagliente, G., Tain, J.L., Tarrío, D., Tassan-Got, L., Tsinganis, A., Valenta, S., Vannini, G., Variale, V., Vaz, P., Ventura, A., Vermeulen, M.J., Vlachoudis, V., Vlastou, R., Wallner, A., Ware, T., Weigand, M., Weiss, C., Wright, T., Žugec, P., Universitat Politècnica de Catalunya. Departament de Física, and Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group

Subjects
Nuclear reaction, Computer science, Nuclear engineering, QC1-999, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Nuclear physics, Context (language use), Neutron, 7. Clean energy, 01 natural sciences, Physics and Astronomy (all), Stellar nucleosynthesis, CERN, 0103 physical sciences, n_TOF, 010306 general physics, Nuclear Experiment, Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, Large Hadron Collider, Física [Àrees temàtiques de la UPC], 010308 nuclear & particles physics, Physics, Radioactive waste, Neutron radiation, Engineering physics, Nuclear technology, Time of flight facility, Física nuclear, Nuclear reactions
Abstract

The study of neutron-induced reactions is of high relevance in a wide variety of fields, ranging from stellar nucleosynthesis and fundamental nuclear physics to applications of nuclear technology. In nuclear energy, high accuracy neutron data are needed for the development of Generation IV fast reactors and accelerator driven systems, these last aimed specifically at nuclear waste incineration, as well as for research on innovative fuel cycles. In this context, a high luminosity Neutron Time Of Flight facility, n-TOF, is operating at CERN since more than a decade, with the aim of providing new, high accuracy and high resolution neutron cross-sections. Thanks to the features of the neutron beam, a rich experimental program relevant to nuclear technology has been carried out so far. The program will be further expanded in the near future, thanks in particular to a new high-flux experimental area, now under construction.

Published
2014

18. Measurement and Analysis of 241Am(n,γ) Cross Sections with C6D6 Detectors at the n TOF Facility at CERN

Author

C. Eleftheriadis, Damir Bosnar, Thomas Rauscher, A. Manousos, Y. Kadi, C. Paradela, L. Audouin, W. Mondalaers, G. Vannini, I. F. Gonçalves, D. Karadimos, R. Versaci, Srinivasan Ganesan, J. Marganiec, P. Vaz, M. Kokkoris, D. G. Jenkins, E. González-Romero, A. Riego, A. Mengoni, Fabio Belloni, M. P. W. Chin, Mario Weigand, T. J. Wright, M. Meaze, I. Duran, M. J. Vermeulen, M. Krtička, E. Jericha, F. Roman, M. Mirea, Mario Barbagallo, Petar Žugec, S. Valenta, J. Billowes, C. Weiß, A. Pavlik, A. Ventura, M. A. Cortés-Giraldo, Marco Calviani, C. Domingo-Pardo, M. B. Gómez-Hornillos, G. Giubrone, Christoph Langer, V. Variale, F. Käppeler, T. Martinez, Roberto Losito, F. Calviño, C. Lederer, T. Ware, H. Leeb, G. Cortes, A. R. García, Arnaud Ferrari, S. Altstadt, P. M. Milazzo, G. Tagliente, Rene Reifarth, D. Tarrío, E. Griesmayer, J. Perkowski, M. Mastromarco, F. Mingrone, M. Brugger, J. Andrzejewski, Stefan Schmidt, A. Tsinganis, C. Carrapiço, V. Bécares, F. Gunsing, P. Gurusamy, Anton Wallner, Vittorio Boccone, J. M. Quesada, Nicola Colonna, L.S. Leong, Vasilis Vlachoudis, L. Tassan-Got, P. E. Koehler, Cristian Massimi, F. Bečvář, D. Cano-Ott, K. Fraval, M. Diakaki, E. Mendoza, Peter Schillebeeckx, N. Dzysiuk, E. Chiaveri, P. F. Mastinu, Javier Praena, C. Rubbia, Carlos Guerrero, A. J. M. Plompen, F. Cerutti, Jeri Kroll, R. Sarmento, J. L. Tain, R. Vlastou, E. Berthoumieux, Ventura, A., Mengoni, A., Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, and Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions

Subjects
Physics, Nuclear reaction, Neutrons, Energies::Energia nuclear [Àrees temàtiques de la UPC], Nuclear and High Energy Physics, Range (particle radiation), Large Hadron Collider, Cross section, TOF, Capture, Nuclear data, 241Am, neutron capture, n_TOF, Neutron, Scintillator, Resonance (particle physics), Nuclear physics, Cross section (physics), Nuclear reactions
Abstract

The 241Am(n,gamma) cross sections have been measured at the n TOF facility at CERN using C6D6 liquid scintillators and time of flight spectrometry. The results in the resolved resonance range bring new constraints to evaluations below 150 eV, and the energy upper limit can be extended from 150 eV to 320 eV. The analysis goes from thermal energy to 150 keV, and the unresolved resonance range cross section turns out to be larger than expected by evaluations or otherwise measured by previous works. The thermal cross section is found to be σth = 740 ± 74 barns, which is larger than expected by evaluations and most previous measurements., JRC.D.4-Standards for Nuclear Safety, Security and Safeguards

Published
2014

19. Measurement of the 238U Radiative Capture Cross Section with C6D6 at the CERN n_TOF Facility

Author

Rene Reifarth, A. J. M. Plompen, Stefan Schmidt, Srinivasan Ganesan, J. M. Quesada, L. Tassan-Got, F. Mingrone, J. Andrzejewski, Mario Barbagallo, Mario Weigand, G. Giubrone, P. Vaz, J. Billowes, M. Mirea, A. Hernández-Prieto, C. Paradela, N. Kivel, L. Audouin, Rugard Dressler, M. S. Robles, M. A. Cortés-Giraldo, G. Tagliente, A. K. Saxena, E. Jericha, A. Tsinganis, Dorothea Schumann, H. Leeb, A. Pavlik, M. Mastromarco, C. Domingo-Pardo, Arnaud Ferrari, C. Weiß, Nicola Colonna, L.S. Leong, Vasilis Vlachoudis, J. Perkowski, C. Carrapiço, M. Sabaté-Gilarte, D. Cano-Ott, S. Valenta, M. Diakaki, K. Fraval, A. Ventura, R. Vlastou, F. Gunsing, Marco Calviani, Anton Wallner, V. Bécares, Jeri Kroll, Cristian Massimi, E. Berthoumieux, W. Mondalaers, A. R. García, A. Manousos, Roberto Losito, P. M. Milazzo, F. Cerutti, R. Sarmento, E. Chiaveri, P. F. Mastinu, J. Marganiec, C. Lampoudis, M. Kokkoris, M. Brugger, Carlos Guerrero, I. F. Gonçalves, M. Krtička, M. J. Vermeulen, F. Calviño, T. Martinez, T. J. Wright, Petar Žugec, Damir Bosnar, Y. Kadi, F. Käppeler, Javier Praena, D. G. Jenkins, Fabio Belloni, S. Altstadt, F. Bečvář, E. Mendoza, Peter Schillebeeckx, E. Leal-Cidoncha, C. Eleftheriadis, Thomas Rauscher, D. Karadimos, E. González-Romero, A. Mengoni, M. P. W. Chin, A. Riego, V. Variale, Christoph Langer, C. Lederer, P. E. Koehler, I. Duran, T. Ware, E. Griesmayer, A. Mallick, G. Vannini, G. Cortes, D. Tarrío, C. Rubbia, J. L. Tain, 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, Ventura, A., and Mengoni, A.

Subjects
Physics, Nuclear reaction, Neutrons, Energies::Energia nuclear [Àrees temàtiques de la UPC], Nuclear and High Energy Physics, Scintillation, Large Hadron Collider, Cross section, Physics::Instrumentation and Detectors, TOF, Nuclear data, Neutron, 238U, neutron capture, n_TOF, C6D6, Nuclear physics, Cross section (physics), Neutron capture, Time of flight, Nuclear reactions, Nuclear Experiment
Abstract

We present the preliminary results of the 238U(n,γ) reaction cross section measurement, performed on April 2012 at the CERN n_TOF facility using C6D6 scintillation detectors over an energy range from thermal to 1 MeV. The goal of this measurement, which is part of a larger proposal, is to reach an uncertainty of 2% in the cross section. The experimental set-up and the methods used to obtain this result are described., JRC.D.4-Standards for Nuclear Safety, Security and Safeguards

Published
2014
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20. Performance of the neutron time-of-flight facility n_TOF at CERN

Author

F. Bečvář, M. Mirea, Yacine Kadi, P. Vaz, L. Audouin, M. B. Gómez-Hornillos, Carlos Guerrero, M. P. W. Chin, Alberto Ventura, Peter Schillebeeckx, N. Dzysiuk, Kathrin Göbel, Petar Žugec, H. Leeb, A. Manousos, F. Roman, Alfredo Ferrari, P. M. Milazzo, J. Perkowski, E. Chiaveri, C. Lampoudis, Srinivasan Ganesan, M. A. Cortés-Giraldo, D. Cano-Ott, A. J. M. Plompen, S. Altstadt, G. Giubrone, R. Versaci, J. Billowes, Mario Weigand, G. Tagliente, A. Pavlik, C. Domingo-Pardo, Fabio Belloni, A. Hernández-Prieto, A. R. García, M. Sabaté-Gilarte, F. Mingrone, J. Andrzejewski, V. Bécares, Mario Barbagallo, E. Jericha, M. Kokkoris, F. Gunsing, T. J. Wright, Rugard Dressler, M. Brugger, Dorothea Schumann, Carlo Rubbia, J. L. Tain, C. Langer, V. Vlachoudis, M. Meaze, Rene Reifarth, Jeri Kroll, M. Diakaki, Cristian Massimi, V. Boccone, Patrick Steinegger, W. Mondalaers, Stefan Schmidt, E. Mendoza, R. Sarmento, J. M. Quesada, E. Berthoumieux, Javier Praena, E. Leal-Cidoncha, A. Tsinganis, D. G. Jenkins, Laurent Tassan-Got, C. Eleftheriadis, I. Goncalves, T. Papaevangelou, Thomas Rauscher, M. Mastromarco, Nicola Colonna, L.S. Leong, C. Carrapiço, Anton Wallner, P. E. Koehler, D. Karadimos, C. Paradela, A. K. Saxena, M. J. Vermeulen, Roberto Losito, F. Cerutti, S. Valenta, I. Duran, Alberto Mengoni, Marco Calviani, C. Weiß, R. Vlastou, T. Ware, Damir Bosnar, E. Griesmayer, V. Variale, A. Riego, C. Lederer, F. Käppeler, N. Kivel, P. Gurusamy, G. Vannini, G. Cortes, D. Tarrío, T. Martinez, E. Gonzalez-Romero, K. Fraval, J. Marganiec, S. Andriamonje, P. F. Mastinu, M. Krtička, F. Calviño, Ventura, A., Mengoni, A., Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, nTOF, 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, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Guerrero C., Tsinganis A., Berthoumieux E., Barbagallo M., Belloni F., Gunsing F., Weiss C., Chiaveri E., Calviani M., Vlachoudis V., Altstadt S., Andriamonje S., Andrzejewski J., Audouin L., Bécares V., Becvar F., Billowes J., Boccone V., Bosnar D., Brugger M., Calvino F., Cano-Ott D., Carrapico C., Cerutti F., Chin M., Colonna N., Cortès G., Cortes-Giraldo M.A., Diakaki M., Domingo-Pardo C., Duran I., Dressler R., Dzysiuk N., Eleftheriadis C., Ferrari A., Fraval K., Ganesan S., Garcia A.R., Giubrone G., Gobel K., Gomez-Hornillos M.B., Gonzalves I.F., Gonzalez-Romero E., Griesmayer E., Gurusamy P., Hernandez-Prieto A., Jenkins D.G., Jericha E., Kadi Y., Kappeler F., Karadimos D., Kivel N., Koehler P., Kokkoris M., Krtika M., Kroll J., Lampoudis C., Langer C., Leal-Cidoncha E., Lederer C., Leeb H., Leong L.S., Losito R., Manousos A., Marganiec J., Martinez T., Massimi C., Mastinu P.F., Mastromarco M., Meaze M., Mendoza E., Mengoni A., Milazzo P.M., Mingrone F., Mirea M., Mondalaers W., Papaevangelou T., Paradela C., Pavlik A., Perkowski J., Plompen A., Praena J., Quesada J.M., Rauscher T., Reifarth R., Riego A., Roman F., Rubbia C., Sabate-Gilarte M., Sarmento R., Saxena A., Schillebeeckx P., Schmidt S., Schumann D., Steinegger P., Tagliente G., Tain J.L., Tarrio D., Tassan-Got L., Valenta S., Vannini G., Variale V., Vaz P., Ventura A., Versaci R., Vermeulen M.J., Vlastou R., Wallner A., Ware T., Weigand M., Wright T., and Zugec P.

Subjects
Nuclear and High Energy Physics, Astrophysics::High Energy Astrophysical Phenomena, Física::Física de partícules [Àrees temàtiques de la UPC], Neutron scattering, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Neutron time-of-flight scattering, MEASUREMENT, PERFORMANCE REPORT, Nuclear physics, Neutron flux, 0103 physical sciences, Neutron cross section, Neutron detection, Neutron, 010306 general physics, Nuclear Experiment, Physics, Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, NEUTRON CROSS SECTION, 010308 nuclear & particles physics, Neutron temperature, n_TOF facility, Neutron source, Physics::Accelerator Physics, TIME OF FLIGHT
Abstract

The neutron time-of-flight facility n TOF features a white neutron source produced by spallation through 20 GeV/c protons impinging on a lead target. The facility, aiming primarily at the measurement of neutron-induced reaction cross sections, was operating at CERN between 2001 and 2004, and then underwent a major upgrade in 2008. This paper presents in detail all the characteristics of the new neutron beam in the currently available configurations, which correspond to two different collimation systems and two choices of neutron moderator. The characteristics discussed include the intensity and energy dependence of the neutron flux, the spatial profile of the beam, the in-beam background components and the energy resolution/broadening. The discussion of these features is based on dedicated measurements and Monte Carlo simulations, and includes estimations of the systematic uncertainties of the mentioned quantities.

Published
2013
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21. 238U(n, gamma) reaction cross section measurement with C6D6 detectors at the n_TOF CERN facility

Author

G. Cortes, D. Tarrío, C. Lederer, F. Bečvář, F. Käppeler, E. Mendoza, I. Duran, F. Cerutti, Peter Schillebeeckx, F. Mingrone, C. Lampoudis, Y. Kadi, J. Andrzejewski, T. Ware, V. Bécares, E. Griesmayer, A. Riego, A. Mallick, G. Vannini, A. K. Saxena, G. Tagliente, Javier Praena, P. M. Milazzo, Arnaud Ferrari, V. Variale, Jeri Kroll, M. P. W. Chin, M. S. Robles, M. J. Vermeulen, J. Billowes, P. E. Koehler, E. Jericha, I. F. Gonçalves, P. Vaz, Sebastian Schmidt, S. Altstadt, D. Cano-Ott, Dorothea Schumann, C. Weiß, S. Valenta, M. Diakaki, R. Sarmento, Marco Calviani, Fabio Belloni, R. Vlastou, A. Manousos, E. Berthoumieux, J. Marganiec, A. R. García, D. Bosnar, M. Brugger, G. Giubrone, A. J. M. Plompen, Carlos Guerrero, E. Leal-Cidoncha, C. Eleftheriadis, Thomas Rauscher, D. Karadimos, T. J. Wright, E. González-Romero, Christoph Langer, Petar Žugec, A. Pavlik, C. Domingo-Pardo, M. Sabaté-Gilarte, C. Paradela, L. Audouin, W. Mondalaers, Pierfrancesco Mastinu, D. G. Jenkins, Roberto Losito, M. A. Cortés-Giraldo, Srinivasan Ganesan, Rugard Dressler, A. Tsinganis, Nicola Colonna, L.S. Leong, Vasilis Vlachoudis, Mario Barbagallo, C. Rubbia, J. L. Tain, Niko Kivel, K. Fraval, Alberto Mengoni, E. Chiaveri, M. Mirea, H. Leeb, J. Perkowski, F. Gunsing, Cristian Massimi, M. Krtička, F. Calviño, Mario Weigand, A. Ventura, T. Martinez, Rene Reifarth, J. M. Quesada, L. Tassan-Got, A. Hernández-Prieto, M. Mastromarco, C. Carrapiço, Anton Wallner, Ventura, A., Mengoni, A., Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions, INPC 2013 – International Nuclear Physics Conference, Lunardi, S., Mingrone, F., Massimi, C., Vannini, G., Altstadt, S., Andrzejewski, J., Audouin, L., Barbagallo, M., Bécares, V., Bečvář, F., Belloni, F., Berthoumieux, E., Billowes, J., Bosnar, D., Brugger, M., Calviani, M., Calviño, F., Cano-Ott, D., Carrapiço, C., Cerutti, F., Chiaveri, E., Chin, M., Colonna, N., Cortés, G., Cortés-Giraldo, M.A., Diakaki, M., Domingo-Pardo, C., Duran, I., Dressler, R., Eleftheriadis, C., Ferrari, A., Fraval, K., Ganesan, S., García, A.R., Giubrone, G., Gonçalves, I.F., González-Romero, E., Griesmayer, E., Guerrero, C., Gunsing, F., Hernández-Prieto, A., Jenkins, D.G., Jericha, E., Kadi, Y., Käppeler, F., Karadimos, D., Kivel, N., Koehler, P., Krtička, M., Kroll, J., Lampoudis, C., Langer, C., Leal-Cidoncha, E., Lederer, C., Leeb, H., Leong, L.S., Losito, R., Mallick, A., Manousos, A., Marganiec, J., Martínez, T., Mastinu, P.F., Mastromarco, M., Mendoza, E., Milazzo, P.M., Mirea, M., Mondalaers, W., Paradela, C., Pavlik, A., Perkowski, J., Plompen, A., Praena, J., Quesada, J.M., Rauscher, T., Reifarth, R., Riego, A., Robles, M.S., Rubbia, C., Sabaté-Gilarte, M., Sarmento, R., Saxena, A., Schillebeeckx, P., Schmidt, S., Schumann, D., Tagliente, G., Tain, J.L., Tarrío, D., Tassan-Got, L., Tsinganis, A., Valenta, S., Variale, V., Vaz, P., Vermeulen, M.J., Vlachoudis, V., Vlastou, R., Wallner, A., Ware, T., Weigand, M., Weiß, C., Wright, T., and Žugec, P.

Subjects
Physics, Nuclear reaction, Energies::Energia nuclear [Àrees temàtiques de la UPC], Scintillation, Background subtraction, 010308 nuclear & particles physics, QC1-999, 238U, neutron capture, n_TOF, Nuclear energy, 01 natural sciences, Engineering physics, Particle detector, Nuclear physics, Physics and Astronomy (all), Cross section (physics), 0103 physical sciences, Scintillation counter, Measuring instrument, Energia nuclear, ddc:530, 010306 general physics, Data reduction
Abstract

The radiative capture cross section of 238U is very important for the developing of new reactor technologies and the safety of existing ones. Here the preliminary results of the 238U(n,γ) cross section measurement performed at n-TOF with C6D6 scintillation detectors are presented, paying particular attention to data reduction and background subtraction. © Owned by the authors, published by EDP Sciences, 2014.

Published
2013

22. Neutron research at the N-TOF facility (CERN): Results and perspectives

Author

M. Mirea, Rene Reifarth, F. Calviño, H. Leeb, Stefan Schmidt, G. Vannini, J. Perkowski, J. M. Quesada, D. G. Jenkins, L. Tassan-Got, F. Becvar, A. Tsinganis, Christoph Langer, R. Vlastou, A. Ferrari, Mario Weigand, E. Berthoumieux, M. Mastromarco, L.S. Leong, J. Andrzejewski, M. Calviani, F. Gunsing, Carlos Guerrero, Vasilis Vlachoudis, Cristian Massimi, A. J. M. Plompen, G. Tagliente, E. Chiaveri, Srinivasan Ganesan, M. B. Gomez Hornillos, P. F. Mastinu, Anton Wallner, M. P. W. Chin, F. Mingrone, M. A. Cortés-Giraldo, P. Vaz, C. Lederer, J. L. Tain, M. Meaze, G. Cortes, M. J. Vermeulen, Mario Barbagallo, E. Jericha, D. Tarrío, S. Altstadt, Alberto Ventura, I. F. Gonçalves, F. Roman, C. Carrapiço, D. Bosnar, M. Krtička, W. Mondalaers, V. Boccone, Jeri Kroll, T. Martinez, E. Mendoza, T. J. Wright, Fabio Belloni, G. Giubrone, N. Colonna, Roberto Losito, R. Sarmento, A. Riego, Peter Schillebeeckx, N. Dzysiuk, F. Käppeler, J. Billowes, C. Rubbia, A. Pavlik, C. Domingo-Pardo, P. M. Milazzo, V. Bécares, C. Eleftheriadis, M. Kokkoris, K. Fraval, Y. Kadi, Thomas Rauscher, Javier Praena, P. Gurusamy, D. Karadimos, Alberto Mengoni, E. González-Romero, A. R. García, S. Valenta, M. Brugger, P. Zugec, D. Cano-Ott, M. Diakaki, A. Manousos, F. Cerutti, J. Marganiec, I. Duran, V. Variale, Roberto Versaci, P. E. Koehler, T. Ware, E. Griesmayer, C. Weiss, C. Paradela, L. Audouin, Ventura, A., Mengoni, A., Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Floyd D. McDaniel , Barney L. Doyle , Gary A. Glass and Yongqiang Wang, N. Colonna, S. Altstadt, J. Andrzejewski, L. Audouin, M. Barbagallo, V. Bécare, F. Bečvář, F. Belloni, E. Berthoumieux, J. Billowe, V. Boccone, D. Bosnar, M. Brugger, M. Calviani, F. Calviño, D. Cano-Ott, C. Carrapiço, F. Cerutti, E. Chiaveri, M. Chin, G. Corté, M. A. Cortés-Giraldo, M. Diakaki, C. Domingo-Pardo, I. Duran, N. Dzysiuk, C. Eleftheriadi, A. Ferrari, K. Fraval, S. Ganesan, A. R. García, G. Giubrone, M. B. Gómez- Hornillo, I. F. Gonçalve, E. González-Romero, E. Griesmayer, C. Guerrero, F. Gunsing, P. Gurusamy, D. G. Jenkin, E. Jericha, Y. Kadi, F. Käppeler, D. Karadimo, P. Koehler, M. Kokkori, M. Krtička, J. Kroll, C. Langer, C. Lederer, H. Leeb, L. S. Leong, R. Losito, A. Manouso, J. Marganiec, T. Martínez, C. Massimi, P. F. Mastinu, M. Mastromarco, M. Meaze, E. Mendoza, A. Mengoni, P. M. Milazzo, F. Mingrone, M. Mirea, W. Mondalaer, C. Paradela, A. Pavlik, J. Perkowski, A. Plompen, J. Praena, J. M. Quesada, T. Rauscher, R. Reifarth, A. Riego, F. Roman, C. Rubbia, R. Sarmento, P. Schillebeeckx, S. Schmidt, G. Tagliente, J. L. Tain, D. Tarrío, L. Tassan-Got, A. Tsingani, S. Valenta, G. Vannini, V. Variale, P. Vaz, A. Ventura, R. Versaci, M. J. Vermeulen, V. Vlachoudi, R. Vlastou, A. Wallner, T. Ware, M. Weigand, C. Wei, T. J. Wright, and P. Žugec

Subjects
Nuclear reaction, Fission, Nuclear physics, Neutron time-of-flight facility, NEUTRON INDUCED REACTIONS, Stellar nucleosynthesis, Spallation neutron source, Advanced nuclear reactors, Neutron-induced reactions, CERN, Nuclear astrophysics, Neutron, n_TOF, Advanced nuclear reactor, Nuclear Experiment, Physics, Neutrons, Energies::Energia nuclear [Àrees temàtiques de la UPC], Large Hadron Collider, Física [Àrees temàtiques de la UPC], fission, neutron radiative capture, radioactive decay periods, Stellar nucleosynthesi, Neutron-induced reaction, TIME-OF-FLIGHT, Neutron capture, N_TOF, Física nuclear, Nucleosynthesis, Radioactive decay, Spallation Neutron Source, Nucleosíntesi
Abstract

In the first ten years of operation, the neutron time-of-flight facility n-TOF at CERN has produced a large body of new and accurate data on neutron capture and fission cross sections, relevant to Nuclear Astrophysics and advanced nuclear technologies. In the next phase, with the construction of a second experimental area with a shorted flight path, the focus of the Collaboration will partially shift from high-resolution measurements of stable or long-lived isotopes, to high-flux measurements of isotopes of relatively short half-life, very low-cross sections, or available in very small quantities. The main results obtained so far at n-TOF and the future perspectives are here presented. © 2013 AIP Publishing LLC. In the first ten years of operation, the neutron time-of-flight facility n-TOF at CERN has produced a large body of new and accurate data on neutron capture and fission cross sections, relevant to Nuclear Astrophysics and advanced nuclear technologies. In the next phase, with the construction of a second experimental area with a shorted flight path, the focus of the Collaboration will partially shift from high-resolution measurements of stable or long-lived isotopes, to high-flux measurements of isotopes of relatively short half-life, very low-cross sections, or available in very small quantities. The main results obtained so far at n-TOF and the future perspectives are here presented. © 2013 AIP Publishing LLC.

Published
2013

23. High-accuracy determination of the neutron flux at n TOF

Author

G. Vannini, A. R. García, M. Brugger, E. Leal-Cidoncha, C. Eleftheriadis, Thomas Rauscher, M. B. Gómez-Hornillos, Christoph Langer, D. Karadimos, M. P. W. Chin, E. González-Romero, Rene Reifarth, F. Cerutti, Petar Žugec, F. Roman, Stefan Schmidt, W. Mondalaers, S. Andriamonje, Kathrin Göbel, J. M. Quesada, R. Versaci, L. Tassan-Got, G. Cortes, E. Jericha, A. Manousos, D. Tarrío, Srinivasan Ganesan, M. Kokkoris, P. F. Mastinu, C. Paradela, Patrick Steinegger, S. Valenta, Marco Calviani, G. Giubrone, M. Meaze, E. Chiaveri, D. Cano-Ott, Dorothea Schumann, Carlos Guerrero, J. Marganiec, T. Martinez, E. Mendoza, E. Berthoumieux, Roberto Losito, M. Mastromarco, M. Mirea, D. G. Jenkins, Javier Praena, A. Hernández-Prieto, L. Audouin, V. Bécares, C. Lampoudis, A. Pavlik, C. Domingo-Pardo, Mario Barbagallo, C. Carrapiço, Anton Wallner, G. Tagliente, A. J. M. Plompen, A. K. Saxena, M. Sabaté-Gilarte, Rugard Dressler, T. Ware, F. Mingrone, J. Andrzejewski, Alberto Mengoni, T. Papaevangelou, J. Billowes, Carlo Rubbia, M. A. Cortés-Giraldo, A. Tsinganis, V. Vlachoudis, J. L. Tain, V. Boccone, R. Vlastou, Nicola Colonna, L.S. Leong, V. Variale, Yacine Kadi, T. J. Wright, Damir Bosnar, P. Vaz, H. Leeb, P. M. Milazzo, J. Perkowski, Alberto Ventura, E. Griesmayer, Alfredo Ferrari, F. Gunsing, M. Krtička, F. Calviño, Jeri Kroll, R. Sarmento, Cristian Massimi, S. Altstadt, M. Diakaki, F. Bečvář, Peter Schillebeeckx, N. Dzysiuk, M. J. Vermeulen, Mario Weigand, P. E. Koehler, I. Duran, C. Weiß, F. Käppeler, K. Fraval, N. Kivel, P. Gurusamy, C. Lederer, A. Riego, I. F. Gonçalves, Fabio Belloni, M. Barbagallo, C. Guerrero, A. Tsingani, D. Tarrio, S. Altstadt, S. Andriamonje, J. Andrzejewski, L. Audouin, V. Becare, F. Becvar, F. Belloni, E. Berthoumieux, J. Billowe, V. Boccone, D. Bosnar, M. Brugger, M. Calviani, F. Calvino, D. Cano-Ott, C. Carrapico, F. Cerutti, E. Chiaveri, M. Chin, N. Colonna, G. Corte, M. A. Cortes-Giraldo, M. Diakaki, C. Domingo-Pardo, I. Duran, R. Dressler, N. Dzysiuk, C. Eleftheriadi, A. Ferrari, K. Fraval, S. Ganesan, A. R. Garcia, G. Giubrone, K. Gobel, M. B. Gomez-Hornillo, I. F. Goncalve, E. Gonzalez-Romero, E. Griesmayer, F. Gunsing, P. Gurusamy, A. Hernandez-Prieto, D. G. Jenkin, E. Jericha, Y. Kadi, F. Kappeler, D. Karadimo, N. Kivel, P. Koehler, M. Kokkori, M. Krticka, J. Kroll, C. Lampoudi, C. Langer, E. Leal-Cidoncha, C. Lederer, H. Leeb, L. S. Leong, R. Losito, A. Manouso, J. Marganiec, T. Martinez, C. Massimi, P. F. Mastinu, M. Mastromarco, M. Meaze, E. Mendoza, A. Mengoni, P. M. Milazzo, F. Mingrone, M. Mirea, W. Mondalaer, T. Papaevangelou, C. Paradela, A. Pavlik, J. Perkowski, A. Plompen, J. Praena, J. M. Quesada, T. Rauscher, R. Reifarth, A. Riego, F. Roman, C. Rubbia, M. Sabate-Gilarte, R. Sarmento, A. Saxena, P. Schillebeeckx, S. Schmidt, D. Schumann, P. Steinegger, G. Tagliente, J. L. Tain, L. Tassan-Got, S. Valenta, G. Vannini, V. Variale, P. Vaz, A. Ventura, R. Versaci, M. J. Vermeulen, V. Vlachoudi, R. Vlastou, A. Wallner, T. Ware, M. Weigand, C. Wei, T. Wright, P. Zugec, Mengoni, A., 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, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, TOF, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear and High Energy Physics, Fission, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Flux, BEAM, neutron flux, n_TOF, Neutron, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Nuclear physics, Cross section (physics), Neutron flux, 0103 physical sciences, CERN, Nuclear fusion, High pressure physics, Spallation, FACILITY, Experimental physics, 010306 general physics, Nuclear Experiment, Physics, Neutrons, Energies::Energia nuclear [Àrees temàtiques de la UPC], Física [Àrees temàtiques de la UPC], 010308 nuclear & particles physics, SCIENCE, Neutron radiation, Ntof, 13. Climate action, STANDARDS
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. © Società Italiana di Fisica / Springer-Verlag 2013.

Published
2013
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24. A new CVD diamond mosaic-detector for (n, α) cross-section measurements at the n_TOF experiment at CERN

Author

F. Bečvář, T. J. Wright, F. Cerutti, Mario Weigand, E. Gonzalez-Romero, Rene Reifarth, J. L. Tain, C. Lampoudis, C. Lederer, N. Kivel, Stefan Schmidt, M. Meaze, J. M. Quesada, F. Gunsing, J. Billowes, Jeri Kroll, P. Vaz, Srinivasan Ganesan, P. Gurusamy, K. Fraval, Cristian Massimi, Alberto Ventura, M. B. Gómez-Hornillos, E. Mendoza, C. Paradela, Javier Praena, R. Sarmento, Mario Barbagallo, E. Berthoumieux, M. S. Robles, A. Riego, M. Krtička, F. Calviño, M. A. Cortés-Giraldo, M. Mirea, G. Tagliente, Peter Schillebeeckx, N. Dzysiuk, Carlos Guerrero, A. Pavlik, T. Martinez, L. Audouin, Petar Žugec, Alfredo Ferrari, C. Domingo-Pardo, Roberto Losito, V. Variale, I. Duran, H. Leeb, M. Sabaté-Gilarte, M. Mastromarco, F. Käppeler, M. Diakaki, J. Perkowski, A. K. Saxena, P. M. Milazzo, J. Marganiec, A. Mallick, G. Vannini, Gerald Badurek, V. Boccone, S. Altstadt, A. Hernández-Prieto, A. J. M. Plompen, P. F. Mastinu, A. Manousos, C. Eleftheriadis, E. Jericha, G. Giubrone, E. Chiaveri, D. Cano-Ott, Alberto Mengoni, V. Bécares, Dorothea Schumann, Yacine Kadi, Rugard Dressler, C. Weiß, R. Versaci, P. E. Koehler, F. Mingrone, J. Andrzejewski, A. Tsinganis, G. Cortes, M. Kokkoris, D. Tarrío, Carlo Rubbia, Nicola Colonna, L.S. Leong, C. Langer, V. Vlachoudis, E. Griesmayer, T. Ware, C. Carrapiço, Anton Wallner, D. G. Jenkins, Laurent Tassan-Got, W. Mondalaers, Fabio Belloni, M. P. W. Chin, F. Roman, E. Leal-Cidoncha, I. Goncalves, Thomas Rauscher, M. J. Vermeulen, D. Karadimos, S. Valenta, A. R. García, M. Brugger, Marco Calviani, R. Vlastou, Damir Bosnar, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, TOF, 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, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Ventura, A., Mengoni, A., C. Wei, E. Griesmayer, C. Guerrero, S. Altstadt, J. Andrzejewski, L. Audouin, G. Badurek, M. Barbagallo, V. Becare, F. Becvar, F. Belloni, E. Berthoumieux, J. Billowe, V. Boccone, D. Bosnar, M. Brugger, M. Calyiani, F. Calvino, D. Cano-Ott, C. Carrapico, F. Cerutti, E. Chiaveri, M. Chin, N. Colonna, G. Corte, M. A. Cortes-Giraldo, M. Diakaki, C. Domingo-Pardo, I. Duran, R. Dressler, N. Dzysiuk, C. Eleftheriadi, A. Ferrari, K. Fraval, S. Ganesan, A. R. Garcia, G. Giubrone, M. B. Gomez-Hornillo, I. F. Goncalve, E. Gonzalez-Romero, F. Gunsing, P. Gurusamy, A. Hernandez-Prieto, D. G. Jenkin, E. Jericha, Y. Kadi, F. Kappeler, D. Karadimo, N. Kivel, P. Koehler, M. Kokkori, M. Krticka, J. Kroll, C. Lampoudi, C. Langer, E. Leal-Cidoncha, C. Lederer, H. Leeb, L. S. Leong, R. Losito, A. Mallick, A. Manouso, J. Marganiec, T. Martinez, C. Massimi, P. F. Mastinu, M. Mastromarco, M. Meaze, E. Mendoza, A. Mengoni, P. M. Milazzo, F. Mingrone, M. Mirea, W. Mondalaer, C. Paradela, A. Pavlik, J. Perkowski, A. Plompen, J. Praena, J. M. Quesada, T. Rauscher, R. Reifarth, A. Riego, M. S. Roble, F. Roman, C. Rubbia, M. Sabate-Gilarte, R. Sarmento, A. Saxena, P. Schillebeeckx, S. Schmidt, D. Schumann, G. Tagliente, J. L. Tain, D. Tarrio, L. Tassan-Got, A. Tsingani, S. Valenta, G. Vannini, V. Variale, P. Vaz, A. Ventura, R. Versaci, M. J. Vermeulen, V. Vlachoudi, R. Vlastou, A. Wallner, T. Ware, M. Weigand, T. Wright, and P. Zugec

Subjects
Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Energies [Àrees temàtiques de la UPC], Analytical chemistry, Chemical vapor deposition, 7. Clean energy, 01 natural sciences, CVD diamond detectors, Chemical reactions, n_TOF, Detectors and Experimental Techniques, Energy resolution, Nuclear Experiment, Instrumentation, Physics, sCVD diamond detectors, (n, α) Cross-section measurements, Large Hadron Collider, ntof, Detector, Resolution (electron density), Austria, Sponsored this work, Vienna, Nuclear Detector, Enginyeria química::Química física [Àrees temàtiques de la UPC], Nuclear and High Energy Physics, Cross-section measurements, Nanotechnology, engineering.material, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Reaccions químiques, Cross section (physics), 0103 physical sciences, (n,α) Cross-section measurement, Neutron, 010306 general physics, Diode, Energies::Energia nuclear [Àrees temàtiques de la UPC], CIVIDEC Instrumentation GmbH, 010308 nuclear & particles physics, (n,α) Cross-section measurements, n-TOF, neutrons, Diamond, (n, α) cross-section measurements, engineering, High Energy Physics::Experiment, diamond detector
Abstract

At the n\_TOF experiment at CERN a dedicated single-crystal chemical vapor deposition (sCVD) Diamond Mosaic-Detector has been developed for (n,$\alpha$) cross-section measurements. The detector, characterized by an excellent time and energy resolution, consists of an array of 9 sCVD diamond diodes. The detector has been characterized and a cross-section measurement has been performed for the $^{59}$Ni(n,$\alpha$)$^{56}$Fe reaction in 2012. The characteristics of the detector, its performance and the promising preliminary results of the experiment are presented., Comment: Conference proceedings of the Vienna Conference on Instrumentation 2013

Published
2013
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