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Dissertations / Theses on the topic 'Gamma detectors'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

He, Zhong. "Gamma ray imaging detectors." Thesis, University of Southampton, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239633.

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2

Graham, Nicholas L. "Gamma Veto Detectors in the KOPIO Experiment." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/31394.

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KOPIO is an experiment designed to search for the CP-symmetry-violating reaction K^0 -> pi^0+nu+nubar. Measurement of the branching ratio of this reaction, depending on the accuracy of the measurement, could be the most precise measurement of the CP violation parameters of the Standard Model to date. The K^0 -> pi^0+nu+nubar reaction is exceedingly rare, with an expected branching ratio of (3 Â± 2)⋅10^(−11) . The rareness of this reaction means two things: 1) that we need prodigious numbers of kaons, and 2) that a multitude of â improperâ decays will have to be screened out by m

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3

Marks, Daniel George. "Estimation methods for semiconductor gamma-ray detectors." Diss., The University of Arizona, 2000. http://hdl.handle.net/10150/284090.

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Gamma-ray detectors based on high-density semiconductors, such as cadmium zinc telluride, are being developed for applications in nuclear medicine, astronomy and the monitoring of nuclear weapons material. In contrast to the more commonly used scintillators, which convert gamma-ray energy into light, semiconductors directly convert the energy of a gamma ray into electrical current. This direct conversion often leads to the perception that gamma-ray detection in semiconductors is not an estimation problem. This dissertation presents the contrasting view that gamma-ray detection in semiconductor

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4

Eskin, Joshua Daniel 1960. "Semiconductor gamma-ray detectors for nuclear medicine." Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/288740.

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Semiconductor-based gamma-ray-imaging detectors are under development for use in high-resolution nuclear medicine imaging applications. These detectors, based on cadmium zinc telluride, hold great promise for delivering improved spatial resolution and detection efficiency over current methods. This dissertation presents work done on three fronts, all directed toward enhancing the practicality of these imaging devices. Electronic readout systems were built to produce gamma-ray images from the raw signals generated by the imagers. Mathematical models were developed to describe the detection proc

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5

Cunningham, Mark Forrest. "High-resolution gamma-ray detectors for nuclear spectroscopy /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2002. http://uclibs.org/PID/11984.

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Thesis (Ph. D.)--University of California, Davis, 2003.<br>Degree granted in Engineering, Applied Science. Dissertation completed in 2002; degree granted in 2003. Also available via the World Wide Web. (Restricted to UC campuses).

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6

Truscott, Peter Robin. "Activation of space-borne bismuth germanate gamma-ray detectors." Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363126.

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7

Zhang, Xiaofeng 1963. "Unique 3D imaging method for Compton gamma-ray detectors." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/38751.

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8

Yau, Tony Tsz-Hong. "Angular distribution of '1'2C(#gamma#, NN) reactions." Thesis, University of Glasgow, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309394.

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9

Titus, Nortin P. "Response of NaI(T1) detectors in geophysical applications." Thesis, Stellenbosch : Stellenbosch University, 2005. http://hdl.handle.net/10019.1/50441.

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Thesis (MSc)--Stellenbosch University, 2005.<br>Some digitised pages may appear illegible due to the condition of the original hard copy.<br>ENGLISH ABSTRACT: Airborne gamma-ray spectrometry is used for exploration and environmental monitoring over large areas. Such datasets of 7-ray are acquired using large 16l NaI(T1) detector crystals mounted in an aircraft. The response of these detectors to naturally occurring radioactive isotopes is a function of detector volume, efficiency and resolution. This response is modelled using the Monte Carlo method. A photon-electron transport computer c

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10

Schnorrenberger, Linda [Verfasser]. "Characterization of Gamma-Ray Detectors with Tagged Photons / Linda Schnorrenberger." Aachen : Shaker, 2012. http://d-nb.info/1069047708/34.

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11

Han, Ling, and Ling Han. "Advances in Gamma-Ray Imaging with Intensified Quantum-Imaging Detectors." Diss., The University of Arizona, 2017. http://hdl.handle.net/10150/626672.

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Nuclear medicine, an important branch of modern medical imaging, is an essential tool for both diagnosis and treatment of disease. As the fundamental element of nuclear medicine imaging, the gamma camera is able to detect gamma-ray photons emitted by radiotracers injected into a patient and form an image of the radiotracer distribution, reflecting biological functions of organs or tissues. Recently, an intensified CCD/CMOS-based quantum detector, called iQID, was developed in the Center for Gamma-Ray Imaging. Originally designed as a novel type of gamma camera, iQID demonstrated ultra-high spa

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12

Robles, Olson Andrea Elizabeth. "Superconducting gamma-detectors for non-destructive analysis in nuclear safeguards." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/62695.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, June 2010.<br>"June 2010." Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 41-42).<br>Ultra-high energy resolution superconducting gamma ray detectors operated at temperatures of 0. 1 K can improve the accuracy of non-destructive analysis of nuclear materials. These detectors offer an order of magnitude improvement in resolution over conventional high-purity germanium detectors. The increase in resolution improves the peak-to-background ratio, and reduces errors from

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13

Ferreira, Marcio Drumond Costa. "Estudo da eficiência de um detector HPGe por métodos semiempíricos e experimental." CNEN - Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, 2012. http://www.bdtd.cdtn.br//tde_busca/arquivo.php?codArquivo=268.

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Nenhuma<br>A espectrometria gama é uma técnica que proporciona informações diversas em uma única análise, além de ser rápida e não destrutiva. Por meio de um detector de radiação acoplado a um sistema eletrônico de aquisição de dados, a técnica identifica os radionuclídeos emissores gama em uma amostra com radioatividade natural ou induzida, bem como fornece informações para calcular as suas atividades, a partir do registro e análise do espectro gama. A eficiência é um dos principais parâmetros a ser considerado quando se trabalha com detectores de radiação gama. Seu conhecimento possibilita u

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14

Franczuk, Stefan. "The asymmetry of the '1'2C(#gamma# #->#,pn) reaction." Thesis, University of Glasgow, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266742.

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15

Mullerworth, Stephen Derek. "Position sensitive detectors for hard X-ray and gamma-ray astronomy." Thesis, University of Southampton, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386646.

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16

Khaplanov, Anton. "Position-sensitive germanium detectors for gamma-ray tracking, imaging and polarimetry." Doctoral thesis, KTH, Fysik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-11996.

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Modern germanium detectors are often manufactured with two-dimensionally segmented electrical contacts. Signals induced in each segment are read out simultaneously when a photon is detected. Detailed pulse shape analysis (PSA) of these signals allows to resolve positions of individual γ-ray interactions with a precision of at least a few mm. The track of a photon can then be reconstructed using γ-ray tracking. Using these techniques, highly efficient large-volume germanium detectors can replace detector systems where previously highly granulated detector arrays were required, and/or large frac

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17

Hilton, Nathan Rhead. "Material uniformity of cadmium zinc telluride in gamma-ray imaging detectors." Diss., The University of Arizona, 2002. http://hdl.handle.net/10150/280187.

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The material uniformity of cadmium zinc telluride (CZT) crystals in gamma-ray imaging detectors is examined using several existing techniques and a new technique called thermally stimulated current (TSC) imaging that has been developed for this dissertation. The TSC imaging model, simulations, and experimental demonstrations are presented here for the first time. CZT radiation detectors are used in nuclear medicine as well as other medical, industrial, national security, and scientific applications; however, the scarcity and cost of high-quality CZT materials have hindered the use of CZT in th

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18

Jayaprakash, Ashwini. "Innovative scintillating optical fibers for detecting/monitoring gamma radiation." Master's thesis, Mississippi State : Mississippi State University, 2006. http://library.msstate.edu/etd/show.asp?etd=etd-12032006-204412.

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19

DALAQUA, JUNIOR LEONARDO. "Contribuicao para a aplicacao do detector Phoswich na analise de amostras ambientais." reponame:Repositório Institucional do IPEN, 1989. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9910.

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20

Menezes, Tiago. "Room temperature CdZnTe X- and gamma-ray detectors for nuclear physics applications." Thesis, University of Surrey, 2000. http://epubs.surrey.ac.uk/842705/.

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Gamma-ray spectroscopy is undoubtedly the most effective tool for understanding the structure of the nucleus. In common with many other problems however, there is more information available that can be readily measured by standard experimental facilities. Therefore, this thesis investigates the potential for the use of a new detector material, CdZnTe, in nuclear physics applications. To evaluate the requirements of detection systems for nuclear physics applications, a y-ray spectroscopy experiment was performed to investigate neutron alignments in 100Mo, 104Ru and 108Pd using deep-inelastic re

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21

Carter, Tony. "The development of small CsI(Tl)-photodiode detectors for gamma-ray astronomy." Thesis, University of Southampton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294502.

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22

Entwistle, A. K. "Studies of background problems in satellite borne X- and gamma-ray detectors." Thesis, Imperial College London, 1987. http://hdl.handle.net/10044/1/38300.

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23

Chen, Gongyin 1968. "Study of high-energy gamma-ray imaging detectors for fast neutron analysis." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/85318.

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24

Moltó, Caracena Teófilo. "Simulation of Portable Gamma Radiation Detectors for Virtual Reality based Training applications." Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/61301.

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[EN] This thesis focuses on the development of a simulator of a gamma radiation portable detector. The aim is to determine the feasibility of such a software tool in a virtual reality (VR) based application, with the purpose of using it in training tasks in the framework of nuclear safeguards and security activities. The work starts with the definition of the series of technical requirements which are necessary to achieve a working prototype of an application of the kind aforementioned. In order to achieve these requirements, a series of incremental prototypes of a VR based simulator are devis

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25

Beck, Patrick R. "Measurement and Modeling of Blocking Contacts for Cadmium Telluride Gamma Ray Detectors." DigitalCommons@CalPoly, 2009. https://digitalcommons.calpoly.edu/theses/211.

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Gamma ray detectors are important in national security applications, medicine, and astronomy. Semiconductor materials with high density and atomic number, such as Cadmium Telluride (CdTe), offer a small device footprint, but their performance is limited by noise at room temperature; however, improved device design can decrease detector noise by reducing leakage current. This thesis characterizes and models two unique Schottky devices: one with an argon ion sputter etch before Schottky contact deposition and one without. Analysis of current versus voltage characteristics shows that thermionic e

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26

Álvarez, Pastor José Manuel. "Focal plane detectors of a Laue lens telescope for Nuclear Astrophysics." Doctoral thesis, Universitat Autònoma de Barcelona, 2012. http://hdl.handle.net/10803/83940.

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centenares de keV hasta unos pocos MeV), presenta un extraordinario potencial para comprender los procesos más extremos que tienen lugar en el Universo, como las explosiones estelares o los aceleradores de partículas. No obstante, a pesar de los enormes esfuerzos realizados por los observatorios de rayos gamma (en el pasado y en la actualidad), se requiere una mejora en la sensibilidad instrumental para aprovechar el enorme potencial científico contenido en este rango energético. Durante las dos últimas décadas se han buscado formas de mejorar la sensibilidad de los instrumentos, increm

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27

Serra, André da Silva. "66Ga como padrão de calibração de raios de altas energias para detectores HPGe." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-10102008-142839/.

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Este trabalho trata do estudo da eficiencia de pico e fun¸cao resposta de detetores semicondutores do tipo HPGe na faixa de energia entre 2 a 5 MeV, um pouco acima da faixa de energia das fontes usualmente dispon´veis em espectroscopia . Ele faz parte de um projeto de calibra¸cao de detetores em altas energias (at´e 20 MeV). Os resultados serao utilizados na obten¸cao das intensidades das radia¸coes de rea¸coes foto-nucleares produzidas por meio do bremstrahlung do feixe de el´etrons de 38 MeV do acelerador Microton em constru¸cao. Trabalhos anteriores utilizaram raios produzidos por rea¸

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28

Last, Iain Jeffrey. "A measurement of #GAMMA#(Z'0 -> B'* X)/#GAMMA#(Z'0 -> hadronic) using the DELPHI detector at LEP and development of a testbeam data acquisition system." Thesis, University of Liverpool, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309882.

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29

Descovich, Martina. "Improving the position resolution of highly segmented HPGe detectors using pulse shape analysis methods." Thesis, University of Liverpool, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272634.

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30

Meier, William. "Development and testing of liquid to solid scintillating neutron detectors." Thesis, Georgia Institute of Technology, 2016. http://hdl.handle.net/1853/54911.

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The purpose of this research is to determine the feasibility of creating an affordable and durable neutron detector for usage in the field surveys, site inspections, and transportation hub monitoring. Currently, organic scintillating detectors are an established method of detecting neutrons but are either costly, fragile solids like stilbene, or flammable liquids like benzene. In this work, several scintillation mixtures were tested with a PuBe source, which emits both neutrons and gamma rays. The pulse shape discrimination method was utilized to separate the signal pulses created from the mi

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31

Ali, N. A. "Improvement of the performance of broad energy germanium detectors for gamma-ray spectroscopy." Thesis, University of Liverpool, 2017. http://livrepository.liverpool.ac.uk/3011625/.

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32

Födisch, Philipp. "Instrumentation of CdZnTe detectors for measuring prompt gamma-rays emitted during particle therapy." Doctoral thesis, Helmholtz-Zentrum Dresden-Rossendorf, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-224868.

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Background: The irradiation of cancer patients with charged particles, mainly protons and carbon ions, has become an established method for the treatment of specific types of tumors. In comparison with the use of X-rays or gamma-rays, particle therapy has the advantage that the dose distribution in the patient can be precisely controlled. Tissue or organs lying near the tumor will be spared. A verification of the treatment plan with the actual dose deposition by means of a measurement can be done through range assessment of the particle beam. For this purpose, prompt gamma-rays are detected, w

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33

Rademacker, Jonas. "Evaluation of the LHCb RICH detectors and a measurement of the CKM angle #gamma#." Thesis, University of Oxford, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365334.

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34

MADUAR, MARCELO F. "Desenvolvimento de um codigo computacional aberto de analise quantitativa para determinacao de radionuclideos por espectrometria gama com detectores semicondutores." reponame:Repositório Institucional do IPEN, 2010. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9534.

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35

Bompani, Luca. "Optimization of the on-board triggering logic for the HERMES high energy astrophysics mission." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/19853/.

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Il fenomeno dei Gamma Ray Burst (GRBs) scoperto casualmente nel 1967 dai satelliti Vela, si è dimostrato estremamente interessante per la cosmologia moderna e per le varie teorie di gravità quantistica. La correlazione dei GRBs con alcuni dei vari eventi capaci di emettere onde gravitazionali, permette di identificarli come controparti elettromagnetiche alla rivelazione di onde gravitazionali, aumentando la precisione nella localizzazioni delle sorgenti di queste ultime. Per sfruttare le peculiarità dei GRBs e approfondire la comprensione del fenomeno stesso è stato proposto il progetto High

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36

Máduar, Marcelo Francis. "Desenvolvimento de um código computacional aberto de análise quantitativa para determinação de radionuclídeos por espectrometria gama com detectores semicondutores." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/85/85131/tde-12082011-150805/.

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A quantificação da atividade de radionuclídeos emissores de raios gama em amostras medidas por espectrometria gama com detectores HPGe depende da análise dos fotopicos presentes no espectro, especialmente da determinação exata das suas áreas líquidas. Tal análise é geralmente realizada com o auxílio de ferramentas de software proprietário. Este trabalho apresenta uma metodologia, descrição de algoritmos e um aplicativo de código aberto, denominado OpenGamma, para a busca e análise de fotopicos a fim de se obter seus parâmetros relevantes e as atividades dos radionuclídeos na amostra. A impleme

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37

LANDULFO, EDUARDO. "Medidas de correlacao angular direcional gama-gama para transicoes no Ge-72." reponame:Repositório Institucional do IPEN, 1992. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10286.

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Valaparla, Sunil K. "Experimental study of the response of semiconductor detectors for EDXRF analysis." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2009. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.

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39

Benetti, Michele. "Simulation and Characterization of Single Photon Detectors for Fluorescence Lifetime Spectroscopy and Gamma-ray Applications." Doctoral thesis, Università degli studi di Trento, 2012. https://hdl.handle.net/11572/367882.

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Gamma-ray and Fluorescence Lifetime Spectroscopies are driving the development of non-imaging silicon photon sensors and, in this context, Silicon Photo-Multipliers (SiPM)s are leading the starring role. They are 2D array of optical diodes called Single Photon Avalanche Diodes (SPAD)s, and are normally fabricated with a dedicated silicon process. SPADs amplify the charge produced by the single absorbed photon in a way that recalls the avalanche amplification exploited in Photo-Multiplier Tubes (PMT)s. Recently 2D arrays of SPADs have been realized also in standard CMOS technology, paving the w

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Benetti, Michele. "Simulation and Characterization of Single Photon Detectors for Fluorescence Lifetime Spectroscopy and Gamma-ray Applications." Doctoral thesis, University of Trento, 2012. http://eprints-phd.biblio.unitn.it/877/1/main.pdf.

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Gamma-ray and Fluorescence Lifetime Spectroscopies are driving the development of non-imaging silicon photon sensors and, in this context, Silicon Photo-Multipliers (SiPM)s are leading the starring role. They are 2D array of optical diodes called Single Photon Avalanche Diodes (SPAD)s, and are normally fabricated with a dedicated silicon process. SPADs amplify the charge produced by the single absorbed photon in a way that recalls the avalanche amplification exploited in Photo-Multiplier Tubes (PMT)s. Recently 2D arrays of SPADs have been realized also in standard CMOS technology, paving the w

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Crespi, F. C. L. "HPGe segmented detectors in γ-ray spectroscopy experiments with exotic beams". Doctoral thesis, Università degli Studi di Milano, 2008. http://hdl.handle.net/2434/59487.

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Most of the present knowledge of the nuclear structure is based on the properties of nuclei that lie in the valley of stability; it has become clear that it is in general not possible to extrapolate such knowledge to the region far off stability. Consequently, in order to obtain an overall comprehension of the nuclear force, it is mandatory to probe the structure of exotic nuclei. In recent years the availability of Radioactive Ion Beams (RIB) enabled the experimental study of nuclear systems far off stability and consequently gave the possibility to attach fundamental open problems in t

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Abdelsanad, Mohamed Omer Nagy. "Studies of Nuclear Resonance Fluorescence Excitations Measured with LaBr3(Ce)detectors for Nuclear Security Applications." Kyoto University, 2013. http://hdl.handle.net/2433/180452.

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43

Damon, Raphael Wesley. "Determination of the photopeak detection efficiency of a HPGe detector, for volume sources, via Monte Carlo simulations." Thesis, University of the Western Cape, 2005. http://etd.uwc.ac.za/index.php?module=etd&amp.

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The Environmental Radioactivity Laboratory (ERL) at iThemba LABS undertakes experimental work using a high purity germanium (HPGe) detector for laboratory measurements. In this study the Monte Carlo transport code, MCNPX, which is a general-purpose Monte Carlo N &minus<br>Particle code that extends the capabilities of the MCNP code, developed at the Los Alamos National Laboratory in New Mexico, was used. The study considers how various parameters such as (1) coincidence summing, (2) volume, (3) atomic number (Z) and (4) density, affects the absolute photopeak efficiency of the ERL&rsquo<br>s H

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TAKEDA, MAURO N. "Determinacao da correcao para o efeito de soma em cascata para espectrometros de HPGe pelo metodo de Monte Carlo." reponame:Repositório Institucional do IPEN, 2001. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10916.

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Cazula, Camila Dias. "Dosimetria de Rn-222 no ar em ambientes localizados acima e abaixo do nível do solo." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/85/85131/tde-20052015-143351/.

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A exposição da população em geral à radiação ionizante surge principalmente a partir de fontes naturais. A principal contribuição é decorrente da inalação do radônio (Rn-222), um gás que ocorre naturalmente (UNSCEAR, 2000). A concentração de Rn-222 num ambiente é controlada por fatores como a permeabilidade do solo e teor de água, a variabilidade meteorológica, características de construção da fundação e da pressão diferencial positivo habitual entre o solo e o ambiente interno. Estudos indicam que a concentração de radônio, apresenta uma variação significativa no subsolo, térreo e andares sup

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Erasmus, Wade Luke. "Feasibility study of the (α,α'γ) reaction at θlab = 0º using the K600 magnetic spectrometer". Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/96955.

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Thesis (MSc)--Stellenbosch University, 2015.<br>ENGLISH ABSTRACT: The coincident measurement of gamma-rays originating from nuclei excited in light-ion reactions and scattered alpha-particles presents interesting opportunities to characterize the decay path for low multi-polarity nuclear excitations. This coincident measurement at θlab = 0◦ was shown to be a powerful tool for the spectroscopy of isoscalar E1 transitions, being selective to distinct modes of bulk nuclear motions. Aided with the high resolution capabilities provided by the HPGe Clover detectors as well as the K600 magnetic

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Gandhi, Thulasidharan. "Synthesis and characterization of CZT nanowires and its potential as a gamma ray detector." abstract and full text PDF (UNR users only), 2008. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3312251.

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Milechina, Larissa. "Development of gamma-ray tracking algorithms and pulse shape analysis methods for highly segmented Ge detectors." Doctoral thesis, KTH, Physics, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3828.

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Andersson, Mikael. "Gamma-ray racking using graph neural networks." Thesis, KTH, Fysik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298610.

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While there are existing methods of gamma ray-track reconstruction in specialized detectors such as AGATA, including backtracking and clustering, it is naturally of interest to diversify the portfolio of available tools to provide us viable alternatives. In this study some possibilities found in the field of machine learning were investigated, more specifically within the field of graph neural networks. In this project there was attempt to reconstruct gamma tracks in a germanium solid using data simulated in Geant4. The data consists of photon energies below the pair production limit and so we

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Andersson, Mikael. "Gamma-ray tracking using graph neural networks." Thesis, KTH, Fysik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298610.

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Abstract:

While there are existing methods of gamma ray-track reconstruction in specialized detectors such as AGATA, including backtracking and clustering, it is naturally of interest to diversify the portfolio of available tools to provide us viable alternatives. In this study some possibilities found in the field of machine learning were investigated, more specifically within the field of graph neural networks. In this project there was attempt to reconstruct gamma tracks in a germanium solid using data simulated in Geant4. The data consists of photon energies below the pair production limit and so we

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