Characterization of a Bismuth germanate Anti-Compton Scattering Shield for use with a Germanium COMPEX detector module
(2022) FYSK02 20211Nuclear physics
Department of Physics
- Abstract
- The scope of this work is to help determine the functional improvement brought on by introducing a Bismuth germanate (BGO) Anti-Compton Scattering (ACS) shield system to a germanium COMPEX detector module. The COMPEX germanium detector module is already an extremely useful addition in examining gamma-ray spectroscopy. However, by introducing an ACS it is hoped to compound on these improvements yielding an improved sensitivity for full energy peak detection. This was done through different tests using peak-to-compton ratios and peak area-to-total area ratios. The tests including the use of $^{60}$Co, $^{137}$Cs, and $^{133}$Ba sources at various distances with the lead-shielded ACS, the unshielded use of $^{133}$Ba at closer distances,... (More)
- The scope of this work is to help determine the functional improvement brought on by introducing a Bismuth germanate (BGO) Anti-Compton Scattering (ACS) shield system to a germanium COMPEX detector module. The COMPEX germanium detector module is already an extremely useful addition in examining gamma-ray spectroscopy. However, by introducing an ACS it is hoped to compound on these improvements yielding an improved sensitivity for full energy peak detection. This was done through different tests using peak-to-compton ratios and peak area-to-total area ratios. The tests including the use of $^{60}$Co, $^{137}$Cs, and $^{133}$Ba sources at various distances with the lead-shielded ACS, the unshielded use of $^{133}$Ba at closer distances, probing the germanium crystal with $^{133}$Ba across its front face, analysis of $^{133}$Ba spectra with a $^{60}$Co source to act as background radiation, and the analysis of individual BGO crystals across their length to determine if a more comprehensive characterization of the crystals is required. These tests resulted in a great increase to the full energy peak sensitivity for most distances when lead shielding was in place and comparatively less increase when unshielded. It was also determined that the effect of the ACS was greatest with the source placed in the center of the front face of each individual germanium crystal and that the ACS provides effective protection from background radiation. In addition, detailed characterization of the current BGO crystals is unnecessary as they perform well irrespective of the location of background radiation. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/9084812
- author
- Dawes, Samuel LU
- supervisor
-
- Dirk Rudolph LU
- Daniel Cox LU
- organization
- course
- FYSK02 20211
- year
- 2022
- type
- M2 - Bachelor Degree
- subject
- keywords
- COMPEX, Lundium, BGO, ACS, gamma-ray spectroscopy
- language
- English
- id
- 9084812
- date added to LUP
- 2022-06-20 09:22:36
- date last changed
- 2022-06-20 09:22:36
@misc{9084812,
abstract = {{The scope of this work is to help determine the functional improvement brought on by introducing a Bismuth germanate (BGO) Anti-Compton Scattering (ACS) shield system to a germanium COMPEX detector module. The COMPEX germanium detector module is already an extremely useful addition in examining gamma-ray spectroscopy. However, by introducing an ACS it is hoped to compound on these improvements yielding an improved sensitivity for full energy peak detection. This was done through different tests using peak-to-compton ratios and peak area-to-total area ratios. The tests including the use of $^{60}$Co, $^{137}$Cs, and $^{133}$Ba sources at various distances with the lead-shielded ACS, the unshielded use of $^{133}$Ba at closer distances, probing the germanium crystal with $^{133}$Ba across its front face, analysis of $^{133}$Ba spectra with a $^{60}$Co source to act as background radiation, and the analysis of individual BGO crystals across their length to determine if a more comprehensive characterization of the crystals is required. These tests resulted in a great increase to the full energy peak sensitivity for most distances when lead shielding was in place and comparatively less increase when unshielded. It was also determined that the effect of the ACS was greatest with the source placed in the center of the front face of each individual germanium crystal and that the ACS provides effective protection from background radiation. In addition, detailed characterization of the current BGO crystals is unnecessary as they perform well irrespective of the location of background radiation.}},
author = {{Dawes, Samuel}},
language = {{eng}},
note = {{Student Paper}},
title = {{Characterization of a Bismuth germanate Anti-Compton Scattering Shield for use with a Germanium COMPEX detector module}},
year = {{2022}},
}