Monte Carlo simulation of neutron radiography 2 (NUR-2) system at triga mark II research reactor of Malaysian Nuclear Agency

The imaging properties namely the edge spread function (ESF) and line spread function (LSF) of the Neutron Radiography 2 (NUR-2) system at Triga Mark II Reactor at Malaysian Nuclear Agency were investigated via simulation and experiment. The simulation of radiographic image was performed by using th...

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Main Author:	Othman, Masitah
Format:	Thesis
Language:	English
Published:	2012
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/32277/5/MasitahOthmanMFS2012.pdf
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id	my-utm-ep.32277
record_format	uketd_dc
spelling	my-utm-ep.322772018-04-27T01:20:09Z Monte Carlo simulation of neutron radiography 2 (NUR-2) system at triga mark II research reactor of Malaysian Nuclear Agency 2012-08 Othman, Masitah TA Engineering (General). Civil engineering (General) The imaging properties namely the edge spread function (ESF) and line spread function (LSF) of the Neutron Radiography 2 (NUR-2) system at Triga Mark II Reactor at Malaysian Nuclear Agency were investigated via simulation and experiment. The simulation of radiographic image was performed by using the Monte Carlo N-Particle codes version 5 and the real neutron radiographic images were collected from experiment done at NUR-2 facility. The simulation used Flux Image Radiograph (FIR) tally while for the experiment the direct method using film was used to detect the transported neutrons. The ESF of the system was measured using cadmium foil with thickness of 1 mm, 2 mm and 3 mm which blocked half of the neutron beam. Demineralized water was used as a scattering material to study the neutron scattering effect inside the material where it was placed between the cadmium foil and the detector. The differentiation of the ESF gave the LSF of the system and the full width at half maximum (FWHM) was estimated. From fast Fourier transformation of the LSF, the modulation transfer function (MTF) of the system was obtained. The results showed that the simulated neutron patterns without scattering material were similar to those found in experiment but with the presence of scattering material, the simulation and experimental data showed great differences. Cadmium with thickness of 1 mm gave the best spatial frequency response followed by 2 mm and 3 mm thick of cadmium. The range of spatial frequency for MTF at 20% was 1.0 to 2.5 cycle/mm, while the range of FWHM was 0.3 to 0.5 mm. The FWHM and MTF obtained in this study are valuable for the characterization of imaging properties of the neutron radiography system. 2012-08 Thesis http://eprints.utm.my/id/eprint/32277/ http://eprints.utm.my/id/eprint/32277/5/MasitahOthmanMFS2012.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:69083?site_name=Restricted Repository masters Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Othman, Masitah Monte Carlo simulation of neutron radiography 2 (NUR-2) system at triga mark II research reactor of Malaysian Nuclear Agency
description	The imaging properties namely the edge spread function (ESF) and line spread function (LSF) of the Neutron Radiography 2 (NUR-2) system at Triga Mark II Reactor at Malaysian Nuclear Agency were investigated via simulation and experiment. The simulation of radiographic image was performed by using the Monte Carlo N-Particle codes version 5 and the real neutron radiographic images were collected from experiment done at NUR-2 facility. The simulation used Flux Image Radiograph (FIR) tally while for the experiment the direct method using film was used to detect the transported neutrons. The ESF of the system was measured using cadmium foil with thickness of 1 mm, 2 mm and 3 mm which blocked half of the neutron beam. Demineralized water was used as a scattering material to study the neutron scattering effect inside the material where it was placed between the cadmium foil and the detector. The differentiation of the ESF gave the LSF of the system and the full width at half maximum (FWHM) was estimated. From fast Fourier transformation of the LSF, the modulation transfer function (MTF) of the system was obtained. The results showed that the simulated neutron patterns without scattering material were similar to those found in experiment but with the presence of scattering material, the simulation and experimental data showed great differences. Cadmium with thickness of 1 mm gave the best spatial frequency response followed by 2 mm and 3 mm thick of cadmium. The range of spatial frequency for MTF at 20% was 1.0 to 2.5 cycle/mm, while the range of FWHM was 0.3 to 0.5 mm. The FWHM and MTF obtained in this study are valuable for the characterization of imaging properties of the neutron radiography system.
format	Thesis
qualification_level	Master's degree
author	Othman, Masitah
author_facet	Othman, Masitah
author_sort	Othman, Masitah
title	Monte Carlo simulation of neutron radiography 2 (NUR-2) system at triga mark II research reactor of Malaysian Nuclear Agency
title_short	Monte Carlo simulation of neutron radiography 2 (NUR-2) system at triga mark II research reactor of Malaysian Nuclear Agency
title_full	Monte Carlo simulation of neutron radiography 2 (NUR-2) system at triga mark II research reactor of Malaysian Nuclear Agency
title_fullStr	Monte Carlo simulation of neutron radiography 2 (NUR-2) system at triga mark II research reactor of Malaysian Nuclear Agency
title_full_unstemmed	Monte Carlo simulation of neutron radiography 2 (NUR-2) system at triga mark II research reactor of Malaysian Nuclear Agency
title_sort	monte carlo simulation of neutron radiography 2 (nur-2) system at triga mark ii research reactor of malaysian nuclear agency
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2012
url	http://eprints.utm.my/id/eprint/32277/5/MasitahOthmanMFS2012.pdf
_version_	1747815964015067136

Monte Carlo simulation of neutron radiography 2 (NUR-2) system at triga mark II research reactor of Malaysian Nuclear Agency

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