Experimental and Monte-Carlo studies of the spatial distribution of neutrons around extended Pb-spallation target

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 f...

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Bibliographic Details
Published in:Radiation measurements 2003-06, Vol.36 (1), p.295-300
Main Authors: Hashemi-Nezhad, S.R., Brandt, R., Westmeier, W., Odoj, R., M. Hella, Kh, Krivopustov, M.I., Kulakov, B.A., Sosnin, A.N.
Format: Article
Language:English
Subjects:
CR-39 detectors
LR 115 detectors
MCNPX code
Neutron distribution
Spallation neutrons
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Summary: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 10 B( n,α) 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.
ISSN:1350-4487
1879-0925
DOI:10.1016/S1350-4487(03)00139-2