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Modeling interactions of intermediate-energy neutrons in a plastic scintillator array with Geant4
Kohley Z., Lunderberg E., Deyoung P.A., Roeder B.T., Baumann T. et al
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 682 (2012) 59-65 - http://hal.in2p3.fr/in2p3-00697159
Physique/Physique Nucléaire Expérimentale
Modeling interactions of intermediate-energy neutrons in a plastic scintillator array with Geant4
Z. Kohley, E. Lunderberg, P.A. Deyoung, B.T. Roeder1, T. Baumann, G. Christian, S. Mosby, J.K. Smith, J. Snyder, A. Spyrou, M. Thoennessen
1 :  LPCC - Laboratoire de Physique Corpusculaire de Caen
http://www.lpc-caen.in2p3.fr/
CNRS : UMR6534 – IN2P3 – Université de Caen Basse-Normandie – Ecole Nationale Supérieure d'Ingénieurs de Caen
ENSICAEN - 6, boulevard du Marechal Juin 14050 Caen Cedex
France
Structure nucléaire
A Monte Carlo simulation of a large-area neutron time-of-flight detector, built on the Geant4 framework, has been compared with an experimental measurement of the View the MathML source decay produced from a 55 MeV/u17C beam. The ability of the Monte Carlo simulation to reproduce the intermediate-energy neutron interactions within the detector has been explored using both the stock Geant4 physics processes and a custom neutron interaction model, menate_r. The stock Geant4 physics processes were unable to reproduce the experimental observables, while excellent agreement was obtained through the inclusion of the menate_r model within Geant4. The differences between the two approaches are shown to be related to the modeling of the neutron-carbon inelastic reactions. Additionally, the use of menate_r provided accurate reproduction of experimental signals associated with neutron scattering within the detector. These results provide validation of the Monte Carlo simulation for modeling measurements of multiple neutrons where the identification and removal of false neutron signals, due to multiple neutron scattering, are required.

Articles dans des revues avec comité de lecture
2012
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (Nucl. Instr.& Meth. Phys. A)
Publisher Elsevier
ISSN 0168-9002 
682
59-65

Monte Carlo simulation – Plastic scintillator array – Neutron detection – Geant4 – Neutron simulation – Cross-talk