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Measurement of radioactive radiation
Dyntarová, Markéta ; Kolář, Radim (referee) ; Chmelař, Milan (advisor)
The theoretical part of this Bachelor thesis, „The measurement of ionizing radiation”, is devoted to certain knowledge of radiation. It is concerned with problems of ionizing radiation detection, sorts of ionizing radiation are described shortly together with its influences on human organism and with abilities of organism protection. Thesis also contains description of solid phase detectors of ionizing radiation with detailed description of gas filled detectors. The practical part of this Bachelor thesis is focused on designing of radiation detector with GM counter and realization of indication part device.
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Modernizace vnitřního detektoru ATLAS
Mészárosová, Lucia ; Doležal, Zdeněk (advisor) ; Mikeštíková, Marcela (referee)
The main goal of this master thesis is, at first, to describe upcoming upgrade of ATLAS experiment in CERN in Switzerland and to describe the principle of strip silicon detectors. Then it is measurement and analysis of data from laser tests with two lasers: red and infra-red. Last but not least goal is to document the method of measurement and analysis of laser tests for the future laser tests. The text of the thesis is divided into five chapters. The first chapter is dedicated to the research facility CERN, its present experiment ATLAS and future experiment ATLAS Upgrade. The second chapter explains properties of semiconductors and the principle of strip semiconductor detectors. The third chapter describes whole measurement layout: a lab for testing, equipment needed for the tests and the whole system functioning. In the fourth chapter there are actual results from the laser tests. The tests were done on two end-cap prototype modules for ATLAS Upgrade with strip silicon sensors using two lasers: red and infra-red. The last chapter briefly explains the functions of macros that were created for measuring and analysing data from laser tests.
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Automation of Semiconductor Detector Tests for ATLAS Upgrade
Martaus, Marek ; Kodyš, Peter (advisor) ; Řezníček, Pavel (referee)
After many years of operation of a Large Hadron Collider, it is necessary to modernize it. The next upgrading will also include an ATLAS detector upgrade. This work is devoted to the development of workflows of testing the silicon strip detectors used in the new ATLAS inner detector. The laser testing method was chosen for the needs of this work. In the first chapters of this work, the reader will learn about the principle of semiconductor detectors, their testing and use in ATLAS. The fourth chapter is devoted to the description of used equipment. The fifth chapter shows the results of the module testing. Discussion of measured results is devoted to chapter six. 1
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Modernizace vnitřního detektoru ATLAS
Mészárosová, Lucia ; Doležal, Zdeněk (advisor) ; Mikeštíková, Marcela (referee)
The main goal of this master thesis is, at first, to describe upcoming upgrade of ATLAS experiment in CERN in Switzerland and to describe the principle of strip silicon detectors. Then it is measurement and analysis of data from laser tests with two lasers: red and infra-red. Last but not least goal is to document the method of measurement and analysis of laser tests for the future laser tests. The text of the thesis is divided into five chapters. The first chapter is dedicated to the research facility CERN, its present experiment ATLAS and future experiment ATLAS Upgrade. The second chapter explains properties of semiconductors and the principle of strip semiconductor detectors. The third chapter describes whole measurement layout: a lab for testing, equipment needed for the tests and the whole system functioning. In the fourth chapter there are actual results from the laser tests. The tests were done on two end-cap prototype modules for ATLAS Upgrade with strip silicon sensors using two lasers: red and infra-red. The last chapter briefly explains the functions of macros that were created for measuring and analysing data from laser tests.
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DEPFET - Semiconductor Detectors on Japan Project Belle II
Nečadová, Alžběta ; Kodyš, Peter (advisor) ; Doležal, Zdeněk (referee)
This work deals with accuracy of silicon detectors, especially pixel detector DEPFET. Prediction of particle's in-detector position measurement errors was determined from simulated data and dependence of these errors on several parameters was analysed-some of the parameters relating to the detector (e.g. pixel size) and another relating to the particle (e.g. its energy). Basics about principle of silicon detectors, their applications and accuracy, experiment Belle and Belle II in KEK (The High Energy Accelerator Research Organization) and also statistic method as ANOVA, regression trees, division by probability (using entropy) are summarized here. Finally, original processing of simulated data (using regression trees) and resulting error predictions are presented.
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Measurement of radioactive radiation
Dyntarová, Markéta ; Kolář, Radim (referee) ; Chmelař, Milan (advisor)
The theoretical part of this Bachelor thesis, „The measurement of ionizing radiation”, is devoted to certain knowledge of radiation. It is concerned with problems of ionizing radiation detection, sorts of ionizing radiation are described shortly together with its influences on human organism and with abilities of organism protection. Thesis also contains description of solid phase detectors of ionizing radiation with detailed description of gas filled detectors. The practical part of this Bachelor thesis is focused on designing of radiation detector with GM counter and realization of indication part device.
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Dose vertification in external radiotherapy with the aid of in vivo dosimetry.
LINHARTOVÁ, Hana
The bachelor thesis shall focus on in-vivo dosimetry assessment at the Department of Radiotherapeutic Oncology of the Thomayer University Hospital with Polyclinic. In-vivo dosimetry is applied in regular intervals in the majority of curative patients, and it is a verification method of particularly the entrance and exit dose of irradiated fields. The thesis is aimed at evaluating this dosimetry as mentioned above, performing a comparison with the planning system, comparing individual doses, and deviations from prescribed doses. This method is independent both of the classical dosimetric procedure and also of the planning system support. Therefore the method is of high importance in the common clinical process of external radiotherapy within the framework of the quality assurance (QA) and quality control (QC) programme.
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