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

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,

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

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 natC 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


Externe Organisation(en)
University of Zagreb, French Atomic Energy Commission (CEA), Karlsruher Institut für Technologie, BARC, Bhabha Atomic Research Center, Istituto Nazionale di Fisica Nucleare, 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
Nuclear Instruments & Methods in Physics Research. Section A. Accelerators, Spectrometers, Detectors, and Associated Equipment
Anzahl der Seiten
ÖFOS 2012
103014 Kernphysik
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