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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. 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

3. 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

4. Measurement and analysis of the Am-241(n,gamma) cross section with liquid scintillator detectors using time-of-flight spectroscopy at the n_TOF facility at CERN

Author

K. Fraval, F. Gunsing, S. Altstadt, J. Andrzejewski, L. Audouin, M. Barbagallo, V. Becares, F. Becvar, F. Belloni, E. Berthoumieux, J. Billowes, V. Boccone, D. Bosnar, M. Brugger, M. Calviani, F. Calvino, D. Cano Ott, C. Carrapico, F. Cerutti, E. Chiaveri, M. Chin, N. Colonna, G. Cortes, M. A. Cortes Giraldo, M. Diakaki, C. Domingo Pardo, I. Duran, R. Dressler, N. Dzysiuk, C. Eleftheriadis, A. Ferrari, S. Ganesan, A. R. Garcia, G. Giubrone, M. B. Gomez Hornillos, I. F. Goncalves, E. Gonzalez Romero, E. Griesmayer, C. Guerrero, P. Gurusamy, A. Hernandez Prieto, D. G. Jenkins, E. Jericha, Y. Kadi, F. Kappeler, D. Karadimos, N. Kivel, P. Koehler, M. Kokkoris, M. Krticka, J. Kroll, C. Lampoudis, C. Langer, E. Leal Cidoncha, C. Lederer, H. Leeb, L. S. Leong, R. Losito, A. Mallick, A. Manousos, J. Marganiec, T. Martinez, P. F. Mastinu, M. Mastromarco, M. Meaze, E. Mendoza, A. Mengoni, P. M. Milazzo, M. Mirea, W. Mondalaers, C. Paradela, A. Pavlik, J. Perkowski, A. Plompen, J. Praena, J. M. Quesada, T. Rauscher, R. Reifarth, A. Riego, M. S. Robles, 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. Tsinganis, S. Valenta, V. Variale, P. Vaz, A. Ventura, R. Versaci, M. J. Vermeulen, V. Vlachoudis, R. Vlastou, A. Wallner, T. Ware, M. Weigand, C. Weiss, T. Wright, P. Zugec, MASSIMI, CRISTIAN, MINGRONE, FEDERICA, VANNINI, GIANNI, K. Fraval, F. Gunsing, 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, 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, S. Ganesan, A. R. Garcia, G. Giubrone, M. B. Gomez-Hornillo, I. F. Goncalve, E. Gonzalez-Romero, E. Griesmayer, C. Guerrero, 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, C. Wei, T. Wright, and P. Zugec

Subjects
radiative capture cross section, NEUTRON TIME OF FLIGHT
Abstract

The Am241(n,γ) cross section has been measured at the n_TOF facility at CERN using deuterated benzene liquid scintillators, commonly known as C6D6 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 σth=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

5. Neutron Capture Reactions on Fe and Ni Isotopes for the Astrophysical s-process

Author

A. R. García, M. Brugger, C. Eleftheriadis, Thomas Rauscher, D. Karadimos, E. González-Romero, M. P. W. Chin, T. Ware, F. Roman, E. Griesmayer, E. Chiaveri, J. L. Tain, P. F. Mastinu, Marco Pignatari, S. Valenta, G. Giubrone, J. Billowes, G. Tagliente, Mario Weigand, Marco Calviani, Srinivasan Ganesan, F. Käppeler, M. B. Gómez-Hornillos, P. E. Koehler, E. Jericha, P. Vaz, C. Lederer, M. Mirea, Mario Barbagallo, D. Cano-Ott, Dorothea Schumann, S. Altstadt, M. Diakaki, Jeri Kroll, C. Weiß, A. Pavlik, C. Domingo-Pardo, N. Kivel, F. Bečvář, H. Leeb, Alberto Mengoni, Javier Praena, R. Sarmento, A. Manousos, A. J. M. Plompen, E. Mendoza, Arnaud Ferrari, A. Riego, M. Meaze, Peter Schillebeeckx, M. J. Vermeulen, M. A. Cortés-Giraldo, N. Dzysiuk, J. Perkowski, J. Marganiec, P. Gurusamy, K. Fraval, Carlos Guerrero, I. Duran, P. M. Milazzo, C. Rubbia, M. Krtička, F. Calviño, I. F. Gonçalves, F. Cerutti, V. Bécares, R. Vlastou, F. Gunsing, T. Martinez, M. Mastromarco, M. Kokkoris, Damir Bosnar, Y. Kadi, G. Cortes, C. Carrapiço, Anton Wallner, Cristian Massimi, D. Tarrío, Fabio Belloni, D. G. Jenkins, E. Berthoumieux, G. Vannini, Petar Žugec, W. Mondelaers, V. Variale, Roberto Versaci, F. Mingrone, J. Andrzejewski, T. J. Wright, C. Langer, Roberto Losito, Rugard Dressler, A. Tsinganis, Nicola Colonna, L.S. Leong, Vasilis Vlachoudis, A. Ventura, Gunther Korschinek, C. Paradela, Rene Reifarth, Stefan Schmidt, L. Audouin, Vittorio Boccone, J. M. Quesada, L. Tassan-Got, 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, 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, C. Lederer, G. Giubrone, C. Massimi, P. Zugec, M. Barbagallo, N. Colonna, C. Domingo-Pardo, C. Guerrero, F. Gunsing, F. Kaeppeler, J. L. Tain, S. Altstadt, 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, G. Corte, M. A. Cortes-Giraldo, M. Diakaki, I. Duran, R. Dressler, N. Dzysiuk, C. Eleftheriadi, A. Ferrari, K. Fraval, S. Ganesan, A. R. Garcia, M. B. Gomez-Hornillo, I. F. Goncalve, E. Gonzalez-Romero, E. Griesmayer, P. Gurusamy, D. G. Jenkin, E. Jericha, Y. Kadi, D. Karadimo, N. Kivel, P. Koehler, M. Kokkori, G. Korschinek, M. Krticka, J. Kroll, C. Langer, H. Leeb, L. S. Leong, R. Losito, 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. Mondelaer, C. Paradela, A. Pavlik, J. Perkowski, M. Pignatari, A. Plompen, J. Praena, J. M. Quesada, T. Rauscher, R. Reifarth, A. Riego, F. Roman, C. Rubbia, R. Sarmento, P. Schillebeeckx, S. Schmidt, D. Schumann, G. Tagliente, 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. J. Wright, 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, Astrophysics::High Energy Astrophysical Phenomena, RADIATIVE NEUTRON CAPTURE, Nuclear Theory, Neutron, Neutron scattering, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, Nuclear physics, neutron capture, n_TOF, s-process, Neutron cross section, Nuclear Experiment, capture, Physics, Neutrons, Energies::Energia nuclear [Àrees temàtiques de la UPC], Cross section, TOF, NEUTRON TIME OF FLIGHT, Neutron temperature, Neutron capture, Neutron source, r-process, S PROCESS, Nuclear reactions, Nucleosynthesis
Abstract

See paper for full list of authors; Neutron capture cross sections in the keV neutron energy region are the key nuclear physics input to study the astrophysical slow neutron capture process. In the past years, a series of neutron capture cross section measurements has been performed at the neutron time-of-flight facility n_TOF at CERN focussing on the Fe/Ni mass region. Recent results and future developments in the neutron time-of-flight technique are discussed.

Published
2014

6. Experimental neutron capture data of 58Ni from the CERN n_TOF facility

Author

TOF Collaboration, ��ugec, P., Barbagallo, M., Colonna, N., Bosnar, D., Altstadt, S., Andrzejewski, J., Audouin, L., B��cares, V., Be��v����, F., Belloni, F., Berthoumieux, E., Billowes, J., Boccone, V., Brugger, M., Calviani, M., Calvi��o, F., Cano-Ott, D., Carrapi��o, C., Cerutti, F., Chiaveri, E., Chin, M., Cort��s, G., Cort��s-Giraldo, M. A., Diakaki, M., Domingo-Pardo, C., Duran, I., Dzysiuk, N., Eleftheriadis, C., Ferrari, A., Fraval, K., Ganesan, S., Garc��a, A. R., Giubrone, G., G��mez-Hornillos, M. B., Gon��alves, I. F., Gonz��lez-Romero, E., Griesmayer, E., Guerrero, C., Gunsing, F., Gurusamy, P., Jenkins, D. G., Jericha, E., Kadi, Y., K��ppeler, F., Karadimos, D., Koehler, P., Kokkoris, M., Krti��ka, M., Kroll, J., Langer, C., Lederer, C., Leeb, H., Leong, L. S., Losito, R., Manousos, A., Marganiec, J., Mart��nez, 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., Riego, A., Roman, F., Rubbia, C., Sarmento, R., Schillebeeckx, P., Schmidt, S., Tagliente, G., Tain, J. L., Tarr��o, 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., Wei��, C., Wright, T., 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, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, National Science Foundation (NSF). United States, Joint Institute for Nuclear Astrophysics (JINA) U.S., 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., P. Zugec, M. Barbagallo, N. Colonna, D. Bosnar, S. Altstadt, J. Andrzejewski, L. Audouin, V. Becare, F. Becvar, F. Belloni, E. Berthoumieux, J. Billowe, V. Boccone, M. Brugger, M. Calviani, F. Calvino, D. Cano-Ott, C. Carrapico, F. Cerutti, E. Chiaveri, M. Chin, G. Corte, M. A. Cortes-Giraldo, M. Diakaki, C. Domingo-Pardo, I. Duran, 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, D. G. Jenkin, E. Jericha, Y. Kadi, F. Kaeppeler, D. Karadimo, P. Koehler, M. Kokkori, M. Krticka, J. Kroll, C. Langer, 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, C. Paradela, A. Pavlik, J. Perkowski, M. Pignatari, 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. 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, 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, nTOF, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, NEUTRON RESONANCE ANALYSIS, Neutron, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Nuclear physics, Time of flight, 58Ni neutron capture cross section, n_TOF, MACS, 0103 physical sciences, Neutron cross section, Física::Electromagnetisme [Àrees temàtiques de la UPC], Nuclear Physics - Experiment, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Physics, Neutrons, Large Hadron Collider, Cross section, 010308 nuclear & particles physics, CERN - n_TOF, Resonance, Física, NEUTRON TIME OF FLIGHT, Neutron temperature, Neutron capture, Neutrons Capture, S PROCESS, s-process
Abstract

The $^{58}$Ni $(n,\gamma)$ cross section has been measured at the neutron time of flight facility n_TOF at CERN, in the energy range from 27 meV up to 400 keV. In total, 51 resonances have been analyzed up to 122 keV. Maxwellian averaged cross sections (MACS) have been calculated for stellar temperatures of kT$=$5-100 keV with uncertainties of less than 6%, showing fair agreement with recent experimental and evaluated data up to kT = 50 keV. The MACS extracted in the present work at 30 keV is 34.2$\pm$0.6$_\mathrm{stat}\pm$1.8$_\mathrm{sys}$ mb, in agreement with latest results and evaluations, but 12% lower relative to the recent KADoNIS compilation of astrophysical cross sections. When included in models of the s-process nucleosynthesis in massive stars, this change results in a 60% increase of the abundance of $^{58}$Ni, with a negligible propagation on heavier isotopes. The reason is that, using both the old or the new MACS, 58Ni is efficiently depleted by neutron captures., Comment: 10 pages, 8 figures, 5 tables

Published
2014

7. The (n,alpha) Reaction in the s-process Branching Point Ni-59

Author

C. Weiss, C. Guerrero, E. Griesmayer, J. Andrzejewski, G. Badurek, E. Chiaveri, R. Dressler, S. Ganesan, E. Jericha, F. Kaeppeler, P. Koehler, C. Lederer, H. Leeb, J. Marganiec, A. Pavlik, J. Perkowski, T. Rauscher, R. Reifarth, D. Schumann, G. Tagliente, V. Vlachoudis, S. Altstadt, L. Audouin, M. Barbagallo, V. Becares, F. Becvar, F. Belloni, E. Berthoumieux, J. Billowes, V. Boccone, D. Bosnar, M. Brugger, M. Calviani, F. Calvino, D. Cano Ott, C. Carrapico, F. Cerutti, M. Chin, N. Colonna, G. Cortes, M. A. Cortes Giraldo, M. Diakaki, C. Domingo Pardo, I. Duran, N. Dzysiuk, C. Eleftheriadis, A. Ferrari, K. Fraval, A. R. Garcia, G. Giubrone, M. B. Gomez Hornillos, I. F. Goncalves, E. Gonzalez Romero, F. Gunsing, P. Gurusamy, A. Hernandez Prieto, D. G. Jenkins, Y. Kadi, D. Karadimos, N. Kivel, M. Kokkoris, M. Krticka, J. Kroll, C. Lampoudis, C. Langer, E. Leal Cidoncha, L. S. Leong, R. Losito, A. M. Llick, A. Manousos, T. Martinez, P. F. Mastinu, M. Mastromarco, M. Meaze, E. Mendoza, A. Mengoni, P. M. Milazzo, M. Mirea, W. Mondalaers, C. Paradela, A. Plompen, J. Praena, J. M. Quesada, A. Riego, M. S. Robles, F. Roman, C. Rubbia, M. Sabate Gilarte, R. Sarmento, A. Saxena, P. Schillebeeckx, S. Schmidt, J. L. Tain, D. Tarrio, L. Tassan Got, A. Tsinganis, S. Valenta, V. Variale, P. Vaz, A. Ventura, R. Versaci, M. J. Vermeulen, R. Vlastou, A. Wallner, T. Ware, M. Weigand, T. Wright, P. Zugec, MASSIMI, CRISTIAN, MINGRONE, FEDERICA, VANNINI, GIANNI, C. Wei, C. Guerrero, E. Griesmayer, J. Andrzejewski, G. Badurek, E. Chiaveri, R. Dressler, S. Ganesan, E. Jericha, F. Kaeppeler, P. Koehler, C. Lederer, H. Leeb, J. Marganiec, A. Pavlik, J. Perkowski, T. Rauscher, R. Reifarth, D. Schumann, G. Tagliente, V. Vlachoudi, S. Altstadt, 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, N. Dzysiuk, C. Eleftheriadi, A. Ferrari, K. Fraval, 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, Y. Kadi, D. Karadimo, N. Kivel, M. Kokkori, M. Krticka, J. Kroll, C. Lampoudi, C. Langer, E. Leal-Cidoncha, L. S. Leong, R. Losito, A. M. Llick, A. Manouso, 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. Plompen, J. Praena, J. M. Quesada, A. Riego, M. S. Roble, F. Roman, C. Rubbia, M. Sabate-Gilarte, R. Sarmento, A. Saxena, P. Schillebeeckx, S. Schmidt, 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, R. Vlastou, A. Wallner, T. Ware, M. Weigand, T. Wright, and P. Zugec

Subjects
(n, a) reaction cross section, diamond detector, NEUTRON TIME OF FLIGHT
Abstract

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

8. Measurement of the C-12(n, p)B-12 cross section at n_TOF at CERN by in-beam activation analysis

Author

Zugec, P., Colonna, N., Bosnar, D., Mengoni, A., Altstadt, S., Andrzejewski, J., Audouin, L., Barbagallo, M., Becares, V., Becvar, F., Belloni, F., Berthoumieux, E., Billowes, J., Boccone, V., Brugger, M., Calviani, M., Calvino, F., Cano Ott, D., Carrapico, C., Cerutti, F., Chiaveri, E., Chin, M., Cortes, G., Cortes Giraldo, M. A., Cosentino, L., Diakaki, M., Domingo Pardo, C., Dressler, R., Duran, I., Eleftheriadis, C., Ferrari, A., Finocchiaro, P., Fraval, K., Ganesan, S., Garcia, A. R., Giubrone, G., Gomez Hornillos, M. B., Goncalves, I. F., Gonzalez Romero, E., Griesmayer, E., Guerrero, C., Gunsing, F., Gurusamy, P., Heinitz, S., Jenkins, D. G., Jericha, E., Kaeppeler, F., Karadimos, D., Kivel, N., Kokkoris, M., Krticka, M., Kroll, J., Langer, C., Lederer, C., Leeb, H., Leong, L. S., Lo Meo, S., Losito, R., Manousos, A., Marganiec, J., Martinez, T., Massimi, C., Mastinu, P., Mastromarco, M., Mendoza, E., Milazzo, P. M., Mingrone, F., Mirea, M., Mondalaers, W., Musumarra, Agatino, 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., Tarrio, 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., P. Zugec, N. Colonna, D. Bosnar, A. Mengoni, S. Altstadt, J. Andrzejewski, L. Audouin, M. Barbagallo, V. Becare, F. Becvar, F. Belloni, E. Berthoumieux, J. Billowe, V. Boccone, M. Brugger, M. Calviani, F. Calvino, D. Cano-Ott, C. Carrapico, F. Cerutti, E. Chiaveri, M. Chin, G. Corte, M. A. Cortes-Giraldo, L. Cosentino, M. Diakaki, C. Domingo-Pardo, R. Dressler, I. Duran, C. Eleftheriadi, A. Ferrari, P. Finocchiaro, 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, S. Heinitz, D. G. Jenkin, E. Jericha, F. Kaeppeler, D. Karadimo, N. Kivel, M. Kokkori, M. Krticka, J. Kroll, C. Langer, C. Lederer, H. Leeb, L. S. Leong, S. L. Meo, R. Losito, A. Manouso, J. Marganiec, T. Martinez, C. Massimi, P. Mastinu, M. Mastromarco, E. Mendoza, P. M. Milazzo, F. Mingrone, M. Mirea, W. Mondalaer, A. Musumarra, C. Paradela, A. Pavlik, J. Perkowski, A. Plompen, J. Praena, J. Quesada, T. Rauscher, R. Reifarth, A. Riego, F. Roman, C. Rubbia, 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, and T. Wright

Subjects
integral cross section, Nuclear Experiment, NEUTRON TIME OF FLIGHT
Abstract

The integral cross section of the C-12(n, p)B-12 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 beta decay of B-12 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.

Published
2014

9. GEANT4 simulation of the neutron background of the C6D6 set-up for capture studies at n_TOF

Author

collaboration, n_TOF, Žugec, P., Colonna, N., Bosnar, D., 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., 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., Meo, S. Lo, Losito, R., Manousos, A., Marganiec, J., Martìnez, 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., Plompen, A., Praena, J., Quesada, J. M., 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., 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 i Enginyeria Nuclear, Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions, P. Zugec, N. Colonna, D. Bosnar, S. Altstadt, J. Andrzejewski, L. Audouin, M. Barbagallo, V. Becare, F. Becvar, F. Belloni, E. Berthoumieux, J. Billowe, V. Boccone, M. Brugger, M. Calviani, F. Calvino, D. Cano-Ott, C. Carrapio, F. Cerutti, E. Chiaveri, M. Chin, G. Corte, M. A. Cortes-Giraldo, M. Diakaki, C. Domingo-Pardo, R. Dressler, I. Duran, N. Dzysiuk, C. Eleftheriadi, A. Ferrari, K. Fraval, S. Ganesan, A. R. Garcia, G. Giubrone, M. B. Gomez-Hornillo, I. F. Gonalve, E. Gonzalez-Romero, E. Griesmayer, C. Guerrero, F. Gunsing, P. Gurusamy, S. Heinitz, D. G. Jenkin, E. Jericha, Y. Kadi, F. Kaeppler, D. Karadimo, N. Kivel, P. Koehler, M. Kokkori, M. Krticka, J. Kroll, C. Langer, C. Lederer, H. Leeb, L. S. Leong, S. Lomeo, R. Losito, A. Manouso, J. Marganiec, T. Mart-Nez, 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. Praenam, J. M. Quesadam, T. Rauscher, R. Reifarth, A. Riego, F. Roman, C. Rubbia, 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, Ventura, A., Mengoni, A., Lo Meo, S., and Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear

Subjects
Neutron capture, Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, GEANT4 simulations, Neutron time of flight, Neutron background, n_TOF, FOS: Physical sciences, Neutron, N-TOF, 7. Clean energy, 01 natural sciences, Partícules (Física nuclear), Nuclear physics, Cross section (physics), 0103 physical sciences, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Instrumentation, physics.ins-det, GEANT4, Line (formation), Particles (Nuclear physics), Physics, Bonner sphere, Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, GEANT4 simulation, Física [Àrees temàtiques de la UPC], 010308 nuclear & particles physics, Detector, Física, Neutron sensitivity, Instrumentation and Detectors (physics.ins-det), Neutron radiation, NEUTRON TIME OF FLIGHT, Background, Deuterium, N_TOF, Simulation
Abstract

The neutron sensitivity of the C6D6 detector setup used at n_TOF facility for capture measurements has been studied by means of detailed GEANT4 simulations. A realistic software replica of the entire n_TOF experimental hall, including the neutron beam line, sample, detector supports and the walls of the experimental area has beeni mplemented in the simulations. The simulations have been analyzed in the same manner as experimental data, in particular by applying the Pulse Height Weighting Technique. The simulations have been validated against a measurement of the neutron background performed with anatC sample, showing an excellent agreement above 1 keV. At lower energies, an additional component in the measured natC yield has been discovered, which prevents the use of natC data for neutron background estimates at neutron energies below a few hundred eV. The origin and time structure of the neutron background have been derived from the simulations. Examples of the neutron background for two different samples are demonstrating the important role of accurate simulations of the neutron background in capture cross-section measurements., JRC.D.4-Standards for Nuclear Safety, Security and Safeguards

Published
2014

10. Ni-62(n,gamma) and Ni-63(n,gamma) cross sections measured at the n_TOF facility at CERN

Author

C. Lederer, E. Berthoumieux, N. Colonna, R. Dressler, C. Guerrero, F. Gunsing, F. Kaeppeler, N. Kivel, M. Pignatari, R. Reifarth, D. Schumann, A. Wallner, S. Altstadt, S. Andriamonje, J. Andrzejewski, L. Audouin, M. Barbagallo, V. Becares, F. Becvar, F. Belloni, B. Berthier, J. Billowes, V. Boccone, D. Bosnar, M. Brugger, M. Calviani, F. Calvino, D. Cano Ott, C. Carrapico, F. Cerutti, E. Chiaveri, M. Chin, G. Cortes, M. A. Cortes Giraldo, I. Dillmann, C. Domingo Pardo, I. Duran, N. Dzysiuk, C. Eleftheriadis, M. Fernandez Ordonez, A. Ferrari, K. Fraval, S. Ganesan, A. R. Garcia, G. Giubrone, M. B. Gomez Hornillos, I. F. Goncalves, E. Gonzalez Romero, F. Gramegna, E. Griesmayer, P. Gurusamy, S. Harrisopulos, M. Heil, K. Ioannides, D. G. Jenkins, E. Jericha, Y. Kadi, D. Karadimos, G. Korschinek, M. Krticka, J. Kroll, C. Langer, E. Lebbos, H. Leeb, L. S. Leong, R. Losito, M. Lozano, A. Manousos, J. Marganiec, S. Marrone, T. Martinez, P. F. Mastinu, M. Mastromarco, M. Meaze, E. Mendoza, A. Mengoni, P. M. Milazzo, M. Mirea, W. Mondalaers, C. Paradela, A. Pavlik, J. Perkowski, R. Plag, A. Plompen, J. Praena, J. M. Quesada, T. Rauscher, A. Riego, F. Roman, C. Rubbia, R. Sarmento, P. Schillebeeckx, S. Schmidt, G. Tagliente, J. L. Tain, D. Tarrio, L. Tassan Got, A. Tsinganis, L. Tlustos, S. Valenta, V. Variale, P. Vaz, A. Ventura, M. J. Vermeulen, R. Versaci, V. Vlachoudis, R. Vlastou, T. Ware, M. Weigand, C. Weiss, T. J. Wright, P. Zugec, MASSIMI, CRISTIAN, MINGRONE, FEDERICA, VANNINI, GIANNI, C. Lederer, C. Massimi, E. Berthoumieux, N. Colonna, R. Dressler, C. Guerrero, F. Gunsing, F. Kaeppeler, N. Kivel, M. Pignatari, R. Reifarth, D. Schumann, A. Wallner, S. Altstadt, S. Andriamonje, J. Andrzejewski, L. Audouin, M. Barbagallo, V. Becare, F. Becvar, F. Belloni, B. Berthier, J. Billowe, V. Boccone, D. Bosnar, M. Brugger, M. Calviani, F. Calvino, D. Cano-Ott, C. Carrapico, F. Cerutti, E. Chiaveri, M. Chin, G. Corte, M. A. Cortes-Giraldo, I. Dillmann, C. Domingo-Pardo, I. Duran, N. Dzysiuk, C. Eleftheriadi, M. Fernandez-Ordonez, A. Ferrari, K. Fraval, S. Ganesan, A. R. Garcia, G. Giubrone, M. B. Gomez-Hornillo, I. F. Goncalve, E. Gonzalez-Romero, F. Gramegna, E. Griesmayer, P. Gurusamy, S. Harrisopulo, M. Heil, K. Ioannide, D. G. Jenkin, E. Jericha, Y. Kadi, D. Karadimo, G. Korschinek, M. Krticka, J. Kroll, C. Langer, E. Lebbo, H. Leeb, L. S. Leong, R. Losito, M. Lozano, A. Manouso, J. Marganiec, S. Marrone, 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, R. Plag, A. Plompen, J. Praena, J. M. Quesada, T. Rauscher, A. Riego, F. Roman, C. Rubbia, R. Sarmento, P. Schillebeeckx, S. Schmidt, G. Tagliente, J. L. Tain, D. Tarrio, L. Tassan-Got, A. Tsingani, L. Tlusto, S. Valenta, G. Vannini, V. Variale, P. Vaz, A. Ventura, M. J. Vermeulen, R. Versaci, V. Vlachoudi, R. Vlastou, T. Ware, M. Weigand, C. Wei, T. J. Wright, and P. Zugec

Subjects
Astrophysics::High Energy Astrophysical Phenomena, CERN - n_TOF, radiative capture cross section, S PROCESS, Nuclear Experiment
Abstract

The cross section of the Ni-62(n,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 Ni-63(n,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

11. 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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12. 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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