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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
http://eprints.utm.my/id/eprint/102339/
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spelling my.utm.1023392023-08-21T08:12:07Z http://eprints.utm.my/id/eprint/102339/ Two dimensional array of multi-pixel photon counter and cesium iodide crystal (Thallium Activator) for radiation monitoring prototype 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 NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/102339/1/AimiAmirahJasniMFS2021.pdf Jasni, Aimi ‘Amirah (2021) Two dimensional array of multi-pixel photon counter and cesium iodide crystal (Thallium Activator) for radiation monitoring prototype. Masters thesis, Universiti Teknologi Malaysia, Faculty of Science. http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:146322
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
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
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
publishDate 2021
url http://eprints.utm.my/id/eprint/102339/1/AimiAmirahJasniMFS2021.pdf
http://eprints.utm.my/id/eprint/102339/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:146322
_version_ 1775621972563066880
score 13.211869

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