Improved response function calculations for scintillation detectors using an extended version of the MCNP code |
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| Affiliation: | 1. Institut für Kernphysik, Technische Universität Darmstadt, Schloßgartenstrasse 9, D-64289 Darmstadt, Germany;2. Physikalisch-Technische Bundesanstalt (PTB), Project 6401, Bundesallee 100, D-38116 Braunschweig, Germany;1. College of Control Science and Engineering, Zhejiang University, Hang Zhou, China;2. Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada;3. Department of Electrical Engineering (EIM-E), Paderborn University, Germany;4. Department of Electronic and Computer Engineering, Hong Kong University of Science and Technology, Hong Kong;1. Reactor Physics Department, NRC, Atomic Energy Authority, Cairo, Egypt;2. Physics Department, Faculty of Science, Zagazig University, Egypt;1. Department of Mathematics and CRSC, North Carolina State University, Raleigh, NC 27695, USA;2. Departments of Biomedical Engineering and Molecular Biology and Biochemistry, University of California, Irvine, CA 92697, USA;3. Department of Mathematics, University of California, Irvine, CA 92697, USA;4. Departments of Molecular Biology and Biochemistry, Chemical Engineering and Materials Science, and Biomedical Engineering, University of California, Irvine, CA 92697, USA;1. Unidad Académica de Estudios Nucleares de la Universidad Autónoma de Zacatecas, C. Ciprés 10, Fracc, La Peñuela, 98068 Zacatecas, Zac., Mexico;2. Departamento de Ingeniería Nuclear de la Universidad Politecnica de Madrid, C. Jose Gutierrez Abascal 2, Madrid E-28006, Spain;1. Joint Institute for Nuclear Research, Dubna, Russia;2. Space Research Institute Russian Academy of Sciences, Moscow, Russia;3. Dubna State University, Dubna, Russia |
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| Abstract: | The analysis of (e,e′n) experiments at the Darmstadt superconducting electron linear accelerator S-DALINAC required the calculation of neutron response functions for the NE213 liquid scintillation detectors used. In an open geometry, these response functions can be obtained using the Monte Carlo codes NRESP7 and NEFF7. However, for more complex geometries, an extended version of the Monte Carlo code MCNP exists. This extended version of the MCNP code was improved upon by adding individual light-output functions for charged particles. In addition, more than one volume can be defined as a scintillator, thus allowing the simultaneous calculation of the response for multiple detector setups. With the implementation of 12C(n,n′3α) reactions, all relevant reactions for neutron energies En<20 MeV are now taken into consideration. The results of these calculations were compared to experimental data using monoenergetic neutrons in an open geometry and a 252Cf neutron source in the complex Darmstadt setup, where in both cases excellent agreement was found. |
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