Characterization of the New n TOF Neutron Beam: Fluence, Profile and Resolution

Autor(en)

Carlos Guerrero, Vicente Bécares, Daniel Cano Ott, Manuel Fernández-Ordóñez, E Gonzalez - Romero, Francisco Martin-Fuertes, Trinitario Martinez, Emilio Mendoza, Gabriel Pina, Javier Quinones, Vassilis Vlachoudis, M Calviani, Samuel Andriamonje, Markus Brugger, Fabio Cerutti, E Chiaveri, Arnaud Ferrari, Yacine Kadi, Elias Lebbos, Eric Berthoumieux, Frank Gunsing, J Andrzejewski, J Marganiec, Jan Perkowski, Ludmila Audouin, B Berthier, Laurent Tassan-Got, Vlad Avrigeanu, Mihail Mirea, Frantisek Becvar, M Krticka, Fabio Belloni, P M Milazzo, Francisco Calvino, Guillem Cortes, M. Belén Gómez Hornillo, C. Carrapico, Isabel Maria Ferro Goncalves, Raúl Sarmento, Pedro Vaz, N Colonna, S Marrone, Meaze Moinul, Giuseppe Tagliente, Vincenzo Variale, Iris Dillmann, César Domingo-Pardo, Michael Heil, I Duran, Carlos Paradela, Diego Tarrio, S. Ganesan, Giuseppe Giubrone, Jose Luis Tain, F Gramegna, P F Mastinu, Sotirios Harrisopulos, K G Ioannides, Dimitrios Karadimos, E Jericha, Helmut Leeb, C. Weiß, Franz Käppeler, Claudia Lederer, Andreas Pavlik, Anton Wallner, M Lozano, Javier Praena, Jose Manuel Quesada Molina, Cristian Massimi, Gianni Vannini, Alberto Mengoni, A Ventura, Marita Mosconi, R Nolte, R Vlastou

Abstrakt

After a halt of four years, the n_TOF spallation neutron facility at CERN has resumed operation in November 2008 with a new spallation target characterized by an improved safety and engineering design, resulting in a more robust overall performance and efficient cooling. The first measurement during the 2009 run has aimed at the full characterization of the neutron beam. Several detectors, such as calibrated fission chambers, the n_TOF Silicon Monitor, a MicroMegas detector with (10)B and (235)U samples, as well as liquid and solid scintillators have been used in order to characterize the properties of the neutron fluence. The spatial profile of the beam has been studied with a specially designed "X-Y" MicroMegas which provided a 2D image of the beam as a function of neutron energy. Both properties have been compared with simulations performed. with the FLUKA code. The characterization of the resolution function is based on results from simulations which have been verified by the study of narrow capture resonances. of (56)Fe, which were measured as part of a new campaign of (n,gamma) measurements on Fe and Ni isotopes.

Organisation(en)

Isotopenphysik

Externe Organisation(en)

Centro de Investigaciones Energeticas Medioambientales y Tecnológica, European Organization for Nuclear Research (CERN), French Alternative Energies and Atomic Energy Commission (CEA), University of Lodz, Institut de Physique Nucléaire d'Orsay (IPN), Centre National De La Recherche Scientifique (CNRS), Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Charles University Prague, Istituto Nazionale di Fisica Nucleare (INFN), Roma, Universitat Politècnica de Catalunya, Instituto Tecnológico e Nuclear, Instituto Superior Técnico, Technische Universität München, GSI Helmholtzzentrum für Schwerionenforschung, Universidade de Santiago de Compostela (USC), Bhabha Atomic Research Center, Universitat de València, National Centre for Scientific Research Demokritos (NCSR), University of Ioannina, Technische Universität Wien, Karlsruher Institut für Technologie, Universidad de Sevilla, Agenzia nazionale per le nuove tecnologie, l’energia e lo sviluppo economico sostenibile, Physikalisch-Technische Bundesanstalt, National Technical University of Athens (NTUA)

Journal

Journal of the Korean Physical Society

Band

59

Seiten

1624-1627

Anzahl der Seiten

4

ISSN

0374-4884

DOI

https://doi.org/10.3938/jkps.59.1624

Publikationsdatum

2011

Peer-reviewed

Ja

ÖFOS 2012

103005 Atomphysik, 203016 Messtechnik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/29948b33-183f-41b5-b253-a56af27956a2