Publications

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

Author(s)
P. Zugec, N. Colonna, D. Bosnar, S. Altstadt, J. Andrzejewski, L. Audouin, M. Barbagallo, V. Becares, F. Becvar, F. Belloni, E. Berthoumieux, J. Billowes, V. Boccone, M. Brugger, M. Calviani, F. Calvino, D. Cano-Ott, C. Carrapio, F. Cerutti, E. Chiaveri, M. Chin, G. Cortes, M. A. Cortes-Giraldo, M. Diakaki, C. Domingo-Pardo, R. Dressler, I. Duran, N. Dzysiuk, C. Eleftheriadis, A. Ferrari, K. Fraval, S. Ganesan, A. R. Garcia, G. Giubrone, M. B. Gomez-Hornillos, I. F. Gonalves, E. Gonzalez-Romero, E. Griesmayer, C. Guerrero, F. Gunsing, P. Gurusamy, S. Heinitz, D. G. Jenkins, E. Jericha, Y. Kadi, F. Kaeppler, D. Karadimos, C. Lederer, A. Pavlik, A. Wallner,
Abstract

The neutron sensitivity of the Cr6D6 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 been implemented 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 a(nat)-C sample, showing an excellent agreement above 1 keV. At lower energies, an additional component in the measured C-nat yield has been discovered, which prevents the use of C-nat 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.

Organisation(s)
Isotope Physics
External organisation(s)
University of Zagreb, French Alternative Energies and Atomic Energy Commission (CEA), Karlsruher Institut für Technologie, Bhabha Atomic Research Center, Istituto Nazionale di Fisica Nucleare (INFN), Roma, Johann Wolfgang Goethe-Universität Frankfurt am Main, University of Lodz, Centre National De La Recherche Scientifique (CNRS), Centro de Investigaciones Energeticas Medioambientales y Tecnológica, Charles University Prague, European Organization for Nuclear Research (CERN), University of Manchester, Universitat Politècnica de Catalunya, Universidade de Lisboa, Universidad de Sevilla, National Technical University of Athens (NTUA), Instituto de Física Corpuscular (IFIC), Paul Scherrer Institute, Universidade de Santiago de Compostela (USC), Aristotle University of Thessaloniki, Universität Basel, Technische Universität Wien, University of York
Journal
Nuclear Instruments & Methods in Physics Research. Section A. Accelerators, Spectrometers, Detectors, and Associated Equipment
Volume
760
Pages
57-67
No. of pages
11
ISSN
0168-9002
DOI
https://doi.org/10.1016/j.nima.2014.05.048
Publication date
10-2014
Peer reviewed
Yes
Austrian Fields of Science 2012
103014 Nuclear physics
Keywords
ASJC Scopus subject areas
Nuclear and High Energy Physics, Instrumentation
Portal url
https://ucris.univie.ac.at/portal/en/publications/geant4-simulation-of-the-neutron-background-of-the-c6d6-setup-for-capture-studies-at-ntof(083c95d6-c6ea-49c6-9b11-22345c20a4bc).html