Two dimensional array of multi-pixel photon counter and cesium iodide crystal (Thallium Activator) for radiation monitoring prototype

An efficient radiation and position monitoring system is useful for preliminary security inspection as well as for radiation emergency preparedness and response. For these applications, a high sensitivity and efficient monitoring system is required. Two position-sensitive prototypes were proposed us...

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Main Author:	Jasni, Aimi ‘Amirah
Format:	Thesis
Language:	English
Published:	2021
Subjects:	QC Physics
Online Access:	http://eprints.utm.my/id/eprint/102339/1/AimiAmirahJasniMFS2021.pdf
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spelling	my-utm-ep.1023392023-08-21T08:12:07Z Two dimensional array of multi-pixel photon counter and cesium iodide crystal (Thallium Activator) for radiation monitoring prototype 2021 Jasni, Aimi ‘Amirah QC Physics An efficient radiation and position monitoring system is useful for preliminary security inspection as well as for radiation emergency preparedness and response. For these applications, a high sensitivity and efficient monitoring system is required. Two position-sensitive prototypes were proposed using solid state detector (multipixel photon counters, MPPC) and inorganic scintillator (cesium iodide with thallium activator, CsI(Tl)). This inorganic scintillator was chosen for its output wavelength compatibility with MPPC, slightly hygroscopic, high photon transmission, and input energy. For both prototypes, eight MPPCs with different configurations were used to obtain active areas of 2.0 x 2.4 cm2 and 2.5 x 4.5 cm2. These prototypes were read out using EASIROC-NIM module and tested with beta (Tl-204; 763.76 keV) and gamma (Co-60; 1.1732 keV) radioactive sources at different positions. The experiments showed that both prototypes were sensitive to both beta and gamma radiation and was able to determine the positions of the sources accurately. The prototype 2 was found to have a better resolution in terms of pixel that is only limited by resolution of the calculation, which is 250 steps in this setup whereas prototype 1 only have 8 pixels. In addition, the experimental efficiency for both prototypes were calculated and compared. The prototype 1 has better efficiency (with beta, 8.86 % and gamma, 18.15 %) than the prototype 2 (with beta, 1.65 % and gamma, 2.07 %). The setup in this study can be further enlarged to be adapted in industries such as security and medical sectors. 2021 Thesis http://eprints.utm.my/id/eprint/102339/ http://eprints.utm.my/id/eprint/102339/1/AimiAmirahJasniMFS2021.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:146322 masters Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	QC Physics
spellingShingle	QC Physics Jasni, Aimi ‘Amirah Two dimensional array of multi-pixel photon counter and cesium iodide crystal (Thallium Activator) for radiation monitoring prototype
description	An efficient radiation and position monitoring system is useful for preliminary security inspection as well as for radiation emergency preparedness and response. For these applications, a high sensitivity and efficient monitoring system is required. Two position-sensitive prototypes were proposed using solid state detector (multipixel photon counters, MPPC) and inorganic scintillator (cesium iodide with thallium activator, CsI(Tl)). This inorganic scintillator was chosen for its output wavelength compatibility with MPPC, slightly hygroscopic, high photon transmission, and input energy. For both prototypes, eight MPPCs with different configurations were used to obtain active areas of 2.0 x 2.4 cm2 and 2.5 x 4.5 cm2. These prototypes were read out using EASIROC-NIM module and tested with beta (Tl-204; 763.76 keV) and gamma (Co-60; 1.1732 keV) radioactive sources at different positions. The experiments showed that both prototypes were sensitive to both beta and gamma radiation and was able to determine the positions of the sources accurately. The prototype 2 was found to have a better resolution in terms of pixel that is only limited by resolution of the calculation, which is 250 steps in this setup whereas prototype 1 only have 8 pixels. In addition, the experimental efficiency for both prototypes were calculated and compared. The prototype 1 has better efficiency (with beta, 8.86 % and gamma, 18.15 %) than the prototype 2 (with beta, 1.65 % and gamma, 2.07 %). The setup in this study can be further enlarged to be adapted in industries such as security and medical sectors.
format	Thesis
qualification_level	Master's degree
author	Jasni, Aimi ‘Amirah
author_facet	Jasni, Aimi ‘Amirah
author_sort	Jasni, Aimi ‘Amirah
title	Two dimensional array of multi-pixel photon counter and cesium iodide crystal (Thallium Activator) for radiation monitoring prototype
title_short	Two dimensional array of multi-pixel photon counter and cesium iodide crystal (Thallium Activator) for radiation monitoring prototype
title_full	Two dimensional array of multi-pixel photon counter and cesium iodide crystal (Thallium Activator) for radiation monitoring prototype
title_fullStr	Two dimensional array of multi-pixel photon counter and cesium iodide crystal (Thallium Activator) for radiation monitoring prototype
title_full_unstemmed	Two dimensional array of multi-pixel photon counter and cesium iodide crystal (Thallium Activator) for radiation monitoring prototype
title_sort	two dimensional array of multi-pixel photon counter and cesium iodide crystal (thallium activator) for radiation monitoring prototype
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2021
url	http://eprints.utm.my/id/eprint/102339/1/AimiAmirahJasniMFS2021.pdf
_version_	1776100899813326848

Two dimensional array of multi-pixel photon counter and cesium iodide crystal (Thallium Activator) for radiation monitoring prototype

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