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8 results on '"Andrzejewski, Józef"'

1. Experimental setup of the 239Pu neutron capture and fission cross-section measurements at n_TOF, CERN

Author

Sanchez-Caballero Adrian, Alcayne Victor, Andrzejewski Józef, Cano-Ott Daniel, Cardinaels Thomas, Dries Peter, Gawlik-Ramiega Aleksandra, González-Romero Enrique, Heyse Jan, Leinders Gregory, Martínez Trinitario, Mendoza Emilio, Moens Andre, Pérez de Rada Alberto, Perkowski Jarosław, Plompen Arjan, Paradela Carlos, Schillebeeckx Peter, Sibbens Goedele, Van Hecke Karen, Vanaken Koen, Vanleeuw David, Verguts Ken, Verwerft Marc, Wynants Ruud, Aberle Oliver, Altieri Saverio, Amaducci Simone, Babiano-Suarez Victor, Bacak Michael, Balibrea Correa Javier, Beltrami Chiara, Bennett Samuel, Bernardes Ana-Paula, Berthoumieux Eric, Beyer Roland, Boromiza Marian, Bosnar Damir, Caamaño Manuel, Calviño Francisco, Calviani Marco, Casanovas Adria, Castelluccio Donato, Cerutti Francesco, Cescutti Gabriele, Chasapoglou Sotirios, Chiaveri Enrico, Colombetti Paolo, Colonna Nicola, Console Camprini Patrizio, Cortés Guillem, Cortés-Giraldo Miguel, Cosentino Luigi, Cristallo Sergio, Dellmann, Di Castro Mario, Di Maria Salvatore, Diakaki Maria, Dietz Mirco, Domingo-Pardo César, Dressler Rugard, Dupont Emmeric, Durán Ignacio, Eleme Zinovia, Fargier Sylvain, Fernández Begoña, Fernández-Domínguez Beatriz, Finocchiaro Paolo, Fiore Salvatore, Furman Valter, García-Infantes Francisco, Gervino Gianpiero, Gilardoni Simone, Guerrero Carlos, Gunsing Frank, Gustavino Carlo, Hillman William, Jenkins David, Jericha Erwin, Junghans Arnd, Kadi Yacine, Kaperoni Kalliopi, Kaur Gurpreet, Kimura Atsushi, Knapová Ingrid, Kokkoris Michael, Kopatch Yury, Krtička Milan, Kyritsis Nikolaos, Ladarescu Ion, Lederer-Woods Claudia, Lerendegui-Marco Jorge, Lerner Giuseppe, Manna Alice, Masi Alessandro, Massimi Cristian, Mastinu Pierfrancesco, Mastromarco Mario, Maugeri Emilio-Andrea, Mazzone Annamaria, Mengoni Alberto, Michalopoulou Veatriki, Milazzo Paolo, Mucciola Riccardo, Murtas Fabrizio, Musacchio-Gonzalez Elizabeth, Musumarra Agatino, Negret Alexandru, Pérez-Maroto Pablo, Patronis Nikolas, Pavón-Rodríguez José-Antonio, Pellegriti Maria, Petrone Cristina, Pirovano Elisa, Plaza del Olmo Julio, Pomp Stephan, Porras Ignacio, Praena Javier, Quesada José-Manuel, Reifarth René, Rochman Dimitri, Romanets Yuriy, Rubbia Carlo, Sabaté-Gilarte Marta, Schumann Dorothea, Sekhar Adhitya, Smith Gavin, Sosnin Nikolay, Stamati Maria-Elisso, Sturniolo Alessandro, Tagliente Giuseppe, Tarifeño-Saldivia Ariel, Tarrío Diego, Torres-Sánchez Pablo, Vagena, Valenta Stanislav, Variale Vincenzo, Vaz Pedro, Vecchio Gianfranco, Vescovi Diego, Vlachoudis Vasilis, Vlastou Rosa, Wallner Anton, Woods Philip-John, Wright Tobias, Zarrella Roberto, and Žugec Petar

Subjects
Physics, QC1-999
Abstract

The experimental setup of the new measurement of 239Pu fission and capture cross-section in the n_TOF time-of-flight facility at CERN is presented. The measurement aims to address the needs and demands of nuclear data users. The experiment incorporates an innovative fast Fission Fragment Detector and the n_TOF Total Absorption Calorimeter, enabling the implementation of the fission tagging technique. Preliminary results exhibit the robust performance of the detector systems, along with the high quality of the new 239Pu samples. These samples were exclusively produced for this measurement by the European Commission’s Joint Research Centre in Geel.

Published
2024
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2. Measurement of the 235U(n,f) cross section relative to the 10B(n,α) reaction with Micromegas detectors at the CERN n_TOF facility: First results

Author

Michalopoulou Veatriki, Diakaki Maria, Vlastou Rosa, Kokkoris Michael, Stamatopoulos Athanasios, Tsinganis Andrea, Eleme Zinovia, Patronis Nikolas, Heyse Jan, Schillebeeckx Peter, Tassan-Got Laurent, Barbagallo Massimo, Colonna Nicola, Urlass Sebastian, Macina Daniela, Chiaveri Enrico, Aberle Oliver, Alcayne Victor, Amaducci Simone, Andrzejewski Józef, Audouin Laurent, Babiano-Suarez Victor, Bacak Michael, Bennett Samuel, Berthoumieux Eric, Billowes Jon, Bosnar Damir, Brown Adam, Busso Maurizio, Caamaño Manuel, Caballero-Ontanaya Luis, Calviño Francisco, Calviani Marco, Cano-Ott Daniel, Casanovas Adria, Cerutti Francesco, Cortés Guillem, Cortés-Giraldo Miguel, Cosentino Luigi, Cristallo Sergio, Damone Lucia-Anna, Davies Paul-John, Dietz Mirco, Domingo-Pardo César, Dressler Rugard, Ducasse Quentin, Dupont Emmeric, Durán Ignacio, Fernández-Domínguez Beatriz, Ferrari Alfredo, Finocchiaro Paolo, Göbel Kathrin, Garg Ruchi, Gawlik-Ramięga Aleksandra, Gilardoni Simone, Gonçalves Isabel, González-Romero Enrique, Guerrero Carlos, Gunsing Frank, Harada Hideo, Heinitz Stephan, Jenkins David, Junghans Arnd, Käppeler† Franz, Kadi Yacine, Kimura Atsushi, Knapová Ingrid, Krtička Milan, Kurtulgil Deniz, Ladarescu Ion, Lederer-Woods Claudia, Leeb Helmut, Lerendegui-Marco Jorge, Lonsdale Sarah-Jane, Manna Alice, Martínez Trinitario, Masi Alessandro, Massimi Cristian, Mastinu Pierfrancesco, Mastromarco Mario, Maugeri Emilio-Andrea, Mazzone Annamaria, Mendoza Emilio, Mengoni Alberto, Milazzo Paolo, Mingrone Federica, Moreno-Soto Javier, Musumarra Agatino, Negret Alexandru, Nolte Ralf, Ogállar Francisco, Oprea Andreea, Pavlik Andreas, Perkowski Jarosław, Piersanti Luciano, Petrone Cristina, Pirovano Elisa, Porras Ignacio, Praena Javier, Quesada José-Manuel, Ramos-Doval Diego, Rauscher Thomas, Reifarth René, Rochman Dimitri, Rubbia Carlo, Sabaté-Gilarte Marta, Saxena Alok, Schumann Dorothea, Sekhar Adhitya, Smith Gavin, Sosnin Nikolay, Sprung Peter, Tagliente Giuseppe, Tain José, Tarifeño-Saldivia Ariel, Thomas Benedikt, Torres-Sánchez Pablo, Ulrich Jiri, Valenta Stanislav, Vannini Gianni, Variale Vincenzo, Vaz Pedro, Ventura Alberto, Vescovi Diego, Vlachoudis Vasilis, Wallner Anton, Woods Philip-John, Wright Tobias, and Žugec Petar

Subjects
Physics, QC1-999
Abstract

Neutron cross section measurements are often made relative to a neutron cross section standard. Thus, the accuracy of the neutron standards determines the best possible accuracy of the neutron measurements. The 235U(n,f) cross section is widely used as reference, while it is considered a standard at thermal point and between 0.15 to 200 MeV. For this reason, additional cross section data for the 235U(n,f) reaction are useful in order to improve the accuracy and to extend the energy range of the standard. In this work, preliminary results of the measurement of the 235U(n,f) cross-section relative to the standard 10B(n,a) reaction are presented. The high accuracy measurement was performed at the experimental area EAR-1 of the n_TOF facility at CERN, aiming at covering the energy range from the thermal region up to approximately 100 keV. The samples were produced at JRC-Geel in Belgium, while the experimental setup was based on Micromegas detectors.

Published
2023
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3. Experimental setup of the 239Pu neutron capture and fission cross-section measurements at n_TOF, CERN.

Author

Sanchez-Caballero, Adrian, Alcayne, Victor, Andrzejewski, Józef, Cano-Ott, Daniel, Cardinaels, Thomas, Dries, Peter, Gawlik-Ramiega, Aleksandra, González-Romero, Enrique, Heyse, Jan, Leinders, Gregory, Martínez, Trinitario, Mendoza, Emilio, Moens, Andre, Pérez de Rada, Alberto, Perkowski, Jarosław, Plompen, Arjan, Paradela, Carlos, Schillebeeckx, Peter, Sibbens, Goedele, and Van Hecke, Karen

Subjects
NEUTRON capture, NUCLEAR cross sections, NUCLEAR fission, NUCLEAR physics experiments
Abstract

The experimental setup of the new measurement of 239Pu fission and capture cross-section in the n_TOF time-of-flight facility at CERN is presented. The measurement aims to address the needs and demands of nuclear data users. The experiment incorporates an innovative fast Fission Fragment Detector and the n_TOF Total Absorption Calorimeter, enabling the implementation of the fission tagging technique. Preliminary results exhibit the robust performance of the detector systems, along with the high quality of the new 239Pu samples. These samples were exclusively produced for this measurement by the European Commission's Joint Research Centre in Geel. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
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4. Measurement of the 235U(n,f) cross section relative to the 10B(n,α) reaction with Micromegas detectors at the CERN n_TOF facility: First results.

Author

Michalopoulou, Veatriki, Diakaki, Maria, Vlastou, Rosa, Kokkoris, Michael, Stamatopoulos, Athanasios, Tsinganis, Andrea, Eleme, Zinovia, Patronis, Nikolas, Heyse, Jan, Schillebeeckx, Peter, Tassan-Got, Laurent, Barbagallo, Massimo, Colonna, Nicola, Urlass, Sebastian, Macina, Daniela, Chiaveri, Enrico, Aberle, Oliver, Alcayne, Victor, Amaducci, Simone, and Andrzejewski, Józef

Subjects
NUCLEAR cross sections, GAS detectors, NUCLEAR reactions, NEUTRON measurement, NUCLEAR energy
Abstract

Neutron cross section measurements are often made relative to a neutron cross section standard. Thus, the accuracy of the neutron standards determines the best possible accuracy of the neutron measurements. The 235U(n,f) cross section is widely used as reference, while it is considered a standard at thermal point and between 0.15 to 200 MeV. For this reason, additional cross section data for the 235U(n,f) reaction are useful in order to improve the accuracy and to extend the energy range of the standard. In this work, preliminary results of the measurement of the 235U(n,f) cross-section relative to the standard 10B(n,a) reaction are presented. The high accuracy measurement was performed at the experimental area EAR-1 of the n_TOF facility at CERN, aiming at covering the energy range from the thermal region up to approximately 100 keV. The samples were produced at JRC-Geel in Belgium, while the experimental setup was based on Micromegas detectors. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
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5. The Nuclear astrophysics program at n_TOF (CERN)

Author

Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Colonna, Nicola, Aberle, O., Andrzejewski, Józef, Calviño Tavares, Francisco, Casanovas Hoste, Adrià, Cortés Rossell, Guillem Pere, Tarifeño Saldivia, Ariel Esteban, Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Colonna, Nicola, Aberle, O., Andrzejewski, Józef, Calviño Tavares, Francisco, Casanovas Hoste, Adrià, Cortés Rossell, Guillem Pere, and Tarifeño Saldivia, Ariel Esteban

Abstract

An important experimental program on Nuclear Astrophysics is being carried out at the n_TOF since several years, in order to address the still open issues in stellar and primordial nucleosynthesis. Several neutron capture reactions relevant to s-process nucleosynthesis have been measured so far, some of which on important branching point radioisotopes. Furthermore, the construction of a second experimental area has recently opened the way to challenging measurements of (n, charged particle) reactions on isotopes of short half-life. The Nuclear Astrophysics program of the n_TOF Collaboration is here described, with emphasis on recent results relevant for stellar nucleosynthesis, stellar neutron sources and primordial nucleosynthesis., Postprint (published version)

Published
2018

6. High precision measurement of the radiative capture cross section of 238U at the n TOF CERN facility

Author

Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Mingrone, Federica, Altstadt, Sebastian, Andrzejewski, Józef, Calviño Tavares, Francisco, Cortés Rossell, Guillem Pere, Gómez Hornillos, María Belén, Riego Pérez, Albert, Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Mingrone, Federica, Altstadt, Sebastian, Andrzejewski, Józef, Calviño Tavares, Francisco, Cortés Rossell, Guillem Pere, Gómez Hornillos, María Belén, and Riego Pérez, Albert

Abstract

The importance of improving the accuracy on the capture cross-section of 238U has been addressed by the Nuclear Energy Agency, since its uncertainty significantly affects the uncertainties of key design parameters for both fast and thermal nuclear reactors. Within the 7th framework programme ANDES of the European Commission three different measurements have been carried out with the aim of providing the 238U(n, gamma) cross-section with an accuracy which varies from 1 to 5%, depending on the energy range. Hereby the final results of the measurement performed at the n TOF CERN facility in a wide energy range from 1 eV to 700 keV will be presented., Postprint (published version)

Published
2016

7. The measurement programme at the neutron time-of-flight facility n TOF at CERN

Author

Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Gunsing, Frank, Aberle, O., Andrzejewski, Józef, Calviño Tavares, Francisco, Casanovas Hoste, Adrià, Cortés Rossell, Guillem Pere, Tarifeño Saldivia, Ariel Esteban, Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Gunsing, Frank, Aberle, O., Andrzejewski, Józef, Calviño Tavares, Francisco, Casanovas Hoste, Adrià, Cortés Rossell, Guillem Pere, and Tarifeño Saldivia, Ariel Esteban

Abstract

Neutron-induced reaction cross sections are important for a wide variety of research fields ranging from the study of nuclear level densities, nucleosynthesis to applications of nuclear technology like design, and criticality and safety assessment of existing and future nuclear reactors, radiation dosimetry, medical applications, nuclear waste transmutation, accelerator-driven systems and fuel cycle investigations. Simulations and calculations of nuclear technology applications largely rely on evaluated nuclear data libraries. The evaluations in these libraries are based both on experimental data and theoretical models. CERN’s neutron time-of-flight facility n_TOF has produced a considerable amount of experimental data since it has become fully operational with the start of its scientific measurement programme in 2001. While for a long period a single measurement station (EAR1) located at 185 m from the neutron production target was available, the construction of a second beam line at 20 m (EAR2) in 2014 has substantially increased the measurement capabilities of the facility. An outline of the experimental nuclear data activities at n_TOF will be presented., Postprint (published version)

Published
2016

8. The n TOF facility: Neutron beams for challenging future measurements at CERN

Author

Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Universitat Politècnica de Catalunya. NEMEN - Nanoenginyeria de materials aplicats a l'energia, Chiaveri, E., Aberle, O., Andrzejewski, Józef, Calviño Tavares, Francisco, Casanovas Hoste, Adrià, Cortés Rossell, Guillem Pere, Tarifeño Saldivia, Ariel Esteban, Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Universitat Politècnica de Catalunya. NEMEN - Nanoenginyeria de materials aplicats a l'energia, Chiaveri, E., Aberle, O., Andrzejewski, Józef, Calviño Tavares, Francisco, Casanovas Hoste, Adrià, Cortés Rossell, Guillem Pere, and Tarifeño Saldivia, Ariel Esteban

Abstract

The CERN n TOF neutron beam facility is characterized by a very high instantaneous neutron flux, excellent TOF resolution at the 185m long flight path (EAR-1), low intrinsic background and coverage of a wide range of neutron energies, from thermal to a few GeV. These characteristics provide a unique possibility to perform high-accuracy measurements of neutron-induced reaction cross-sections and angular distributions of interest for fundamental and applied Nuclear Physics. Since 2001, the n TOF Collaboration has collected a wealth of high quality nuclear data relevant for nuclear astrophysics, nuclear reactor technology, nuclear medicine, etc. The overall efficiency of the experimental program and the range of possible measurements has been expanded with the construction of a second experimental area (EAR-2), located 20m on the vertical of the n TOF spallation target. This upgrade, which benefits from a neutron flux 30 times higher than in EAR-1, provides a substantial extension in measurement capabilities, opening the possibility to collect data on neutron cross-section of isotopes with short half-lives or available in very small amounts. This contribution will outline the main characteristics of the n TOF facility, with special emphasis on the new experimental area. In particular, we will discuss the innovative features of the EAR-2 neutron beam that make possible to perform very challenging measurements on short-lived radioisotopes or sub-mg samples, out of reach up to now at other neutron facilities around the world. Finally, the future perspectives of the facility will be presented., Postprint (published version)

Published
2016

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