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Experimental and Monte-Carlo studies of the spatial distribution of neutrons around extended Pb-spallation target |
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| Authors: | S R Hashemi-Nezhad R Brandt W Westmeier R Odoj Kh M Hella M I Krivopustov B A Kulakov A N Sosnin |
| Institution: | a High Energy Physics, School of Physics, University of Sydney, Sydney NSW 2006, Australia b Institut fuer Physikalische Chemie, Kernchemie und Makromolekulare Chemie, Philipps-Universitaet Marburg, Germany c Institut fuer Sicherheitsforschung und Reaktorsicherheit, Forschungszentrum Juelich GmbH, Juelich, Germany d Joint Institute for Nuclear Research, JINR, Dubna, Russia |
| Abstract: | The spatial distribution of thermal and fast neutrons on the surface of a paraffin moderator surrounding a cylindrical lead target, irradiated with 1 GeV protons was studied. The lead target had 8 cm diameter and 20 cm length. The thickness of the paraffin around the target was 6 cm. The slow and fast neutron distributions were determined using LR 115 2B and CR-39 detectors via the 10B(n, ) reaction and neutron induced nuclear recoils, respectively. The observed slow and fast neutron distributions on the surface of the paraffin were compared with Monte-Carlo simulations using the MCNPX-2.1.5 code. |
| Keywords: | Spallation neutrons Neutron distribution LR 115 detectors CR-39 detectors MCNPX code |
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