Study of parameters influencing the response of HPGe-detectors

Research output: ThesisMaster's thesis

Standard

Study of parameters influencing the response of HPGe-detectors. / Geelen, Stef; Schroeyers, Wouter (Peer reviewer); Bruggeman, Michel (Peer reviewer); Hult, Mikael (Peer reviewer); Lutter, Guillaume (Peer reviewer); Verheyen, Leen.

UHasselt - Universiteit Hasselt, 2018. 63 p.

Research output: ThesisMaster's thesis

Harvard

Geelen, S, Schroeyers, W, Bruggeman, M, Hult, M, Lutter, G & Verheyen, L 2018, 'Study of parameters influencing the response of HPGe-detectors', Master of Science, Uhasselt - Hasselt University .

APA

Geelen, S., Schroeyers, W., Bruggeman, M., Hult, M., Lutter, G., & Verheyen, L. (2018). Study of parameters influencing the response of HPGe-detectors. UHasselt - Universiteit Hasselt.

Vancouver

Geelen S, Schroeyers W, Bruggeman M, Hult M, Lutter G, Verheyen L. Study of parameters influencing the response of HPGe-detectors. UHasselt - Universiteit Hasselt, 2018. 63 p.

Author

Geelen, Stef ; Schroeyers, Wouter ; Bruggeman, Michel ; Hult, Mikael ; Lutter, Guillaume ; Verheyen, Leen. / Study of parameters influencing the response of HPGe-detectors. UHasselt - Universiteit Hasselt, 2018. 63 p.

Bibtex - Download

@phdthesis{533ab7e6df134886a230808262eced57,
title = "Study of parameters influencing the response of HPGe-detectors",
abstract = "The SCK•CEN, the JRC Geel and the University of Hasselt make use of High Purity Germanium detectors (HPGe) for gamma-ray spectrometry. These detectors have a superior resolution compared to other gamma-ray detectors. However, these detectors still need many corrections for quantitative analysis of radioactivity, nuclide identification or the characterisation of unknown samples. Anno 2018 those corrections are mostly calculated by advanced algorithms involving Monte Carlo simulations. Such simulations require a detailed digital model of the detector. In this thesis EGSnrc software was used to make these simulations. Three topics were investigated. First, the creation of a model for the detector of UHasselt was done. This resulted in an irregular deadlayer with a crater in the middle. Second, a new model for detector T7 was created with the aim to investigate the influence of the parameters in the model. All parameters were changed separately and their individual influence was measured by comparing the relative difference in counting efficiency compared to experimental data. Third, a comparison of two deadlayer thickness calculation methods was done. A first method was based on a method described by Budjas et al. [1] and the second method is based on the differences in attenuation coefficients. The results of this comparison showed that both methods gave a good indication of the deadlayer thickness given that a non-collimated point source of 241Am is used.",
keywords = "gamma-ray spectrometry, efficiency transfer, dead layer of HPGe detector, HPGe detector modeling",
author = "Stef Geelen and Wouter Schroeyers and Michel Bruggeman and Mikael Hult and Guillaume Lutter and Leen Verheyen",
note = "Score=10",
year = "2018",
month = jun,
day = "27",
language = "English",
publisher = "UHasselt - Universiteit Hasselt",
school = "Uhasselt - Hasselt University , KUL - Katholieke Universiteit Leuven ",

}

RIS - Download

TY - THES

T1 - Study of parameters influencing the response of HPGe-detectors

AU - Geelen, Stef

AU - Verheyen, Leen

A2 - Schroeyers, Wouter

A2 - Bruggeman, Michel

A2 - Hult, Mikael

A2 - Lutter, Guillaume

N1 - Score=10

PY - 2018/6/27

Y1 - 2018/6/27

N2 - The SCK•CEN, the JRC Geel and the University of Hasselt make use of High Purity Germanium detectors (HPGe) for gamma-ray spectrometry. These detectors have a superior resolution compared to other gamma-ray detectors. However, these detectors still need many corrections for quantitative analysis of radioactivity, nuclide identification or the characterisation of unknown samples. Anno 2018 those corrections are mostly calculated by advanced algorithms involving Monte Carlo simulations. Such simulations require a detailed digital model of the detector. In this thesis EGSnrc software was used to make these simulations. Three topics were investigated. First, the creation of a model for the detector of UHasselt was done. This resulted in an irregular deadlayer with a crater in the middle. Second, a new model for detector T7 was created with the aim to investigate the influence of the parameters in the model. All parameters were changed separately and their individual influence was measured by comparing the relative difference in counting efficiency compared to experimental data. Third, a comparison of two deadlayer thickness calculation methods was done. A first method was based on a method described by Budjas et al. [1] and the second method is based on the differences in attenuation coefficients. The results of this comparison showed that both methods gave a good indication of the deadlayer thickness given that a non-collimated point source of 241Am is used.

AB - The SCK•CEN, the JRC Geel and the University of Hasselt make use of High Purity Germanium detectors (HPGe) for gamma-ray spectrometry. These detectors have a superior resolution compared to other gamma-ray detectors. However, these detectors still need many corrections for quantitative analysis of radioactivity, nuclide identification or the characterisation of unknown samples. Anno 2018 those corrections are mostly calculated by advanced algorithms involving Monte Carlo simulations. Such simulations require a detailed digital model of the detector. In this thesis EGSnrc software was used to make these simulations. Three topics were investigated. First, the creation of a model for the detector of UHasselt was done. This resulted in an irregular deadlayer with a crater in the middle. Second, a new model for detector T7 was created with the aim to investigate the influence of the parameters in the model. All parameters were changed separately and their individual influence was measured by comparing the relative difference in counting efficiency compared to experimental data. Third, a comparison of two deadlayer thickness calculation methods was done. A first method was based on a method described by Budjas et al. [1] and the second method is based on the differences in attenuation coefficients. The results of this comparison showed that both methods gave a good indication of the deadlayer thickness given that a non-collimated point source of 241Am is used.

KW - gamma-ray spectrometry

KW - efficiency transfer

KW - dead layer of HPGe detector

KW - HPGe detector modeling

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/31470501

M3 - Master's thesis

PB - UHasselt - Universiteit Hasselt

ER -

ID: 4692077