2024-02-23 10:23 |
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2024-02-16 16:22 |
[PUBDB-2024-00819]
Bachelor Thesis
Lamaack, J. ; Hillert, W. ; Kube, G.
New Beam Position Monitor System for PETRA IV
41 pp. (2024)2024 = Bachelorarbeit, University of Hamburg, 2024
The PETRA IV project at DESY aims to upgrade the present synchrotron radiation sourcePETRA III into a source of ultra-low emittance with target emittance of 20pmrad. Thesmall beam emittance translates directly into much smaller beam sizes of about 7 μmhorizontally and 3 μm vertically at insertion device source points, thus imposing stringentrequirements on the machine’s stability. [...]
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2023-11-07 12:01 |
[PUBDB-2023-06646]
Bachelor Thesis
Schmidt, F.
Geant4-Simulation zur Dosimetrie von Elektronenstrahlung in Wasser
39 pp. (2023)2023 = Bachelorarbeit, Postdam, 2023
Bei der Bestrahlung von Tumoren findet unter anderem Elektronenstrahlung Anwendung.Ein noch weitgehend unerforschter und vielversprechender Effekt ist der sogenannteFLASH-Effekt, bei welchem eine kurzzeitige und hochdosierte Bestrahlung zu wenigerSch¨aden am gesunden Gewebe f¨uhrt als eine l¨anger dauerende mit niedriger Dosis. Umden optimalen Parameterbereich f¨ur diese Bestrahlungsart zu ermitteln, entsteht am DeutschenElektronen-Synchrotron (DESY) in Zeuthen ein Forschungsbereich zur Dosimetrievon Elektronenstrahlung in biologischem Gewebe. [...]
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2023-08-15 10:23 |
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2023-01-18 14:08 |
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2023-01-12 12:14 |
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2022-12-13 12:25 |
[PUBDB-2022-07553]
Bachelor Thesis
Erberk, P. ; Martins, M. ; Beye, M.
Full-field Bragg imaging of microscopic domains in a quantum material with phase coexistence
42 pp. (2022)2022 = Bachelorarbeit, University of Hamburg, 2022
Y$_{0.63}$Ca$_{0.37}$TiO$_{3}$ is a quantum material that experiences a highly unusual metal-insulator transition: Across a very large temperature range between 100 K and 200 K, this material turns from conductive at low temperatures to being insulating at higher temperatures, which is the opposite transition of materials with similar properties such as VO$_2$. Earlier studies demonstrated that within this temperature range, the material exists in two different phases that grow in elongated domains: A conductive orthorhomic phase and an insulating monoclinic phase. [...]
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2022-11-25 18:00 |
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2022-08-31 10:16 |
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2022-02-23 12:38 |
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