Master Theses

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2019-11-08
11:41
[PUBDB-2019-04031] Master Thesis

Drell-Yan Production with Transverse Momentum Dependent Parton Densities
1-105 () = Masterarbeit, University of Hamburg, 2019
In this thesis, the Drell-Yan production is described in next-to-leading order (NLO)with transverse momentum dependent parton densities (TMDs). The NLO method MC@NLOis applied for the hard process calculation and is combined with TMDs obtained within theparton branching (PB) method (PB-TMDs). [...]
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2019-11-06
08:53
[PUBDB-2019-03954] Master Thesis

Positron Acceleration with Beam-Driven Plasma Wakefield Accelerators
81 pp. () = Masterarbeit, University of Hamburg, 2019
The transport and acceleration of positron beams is a crucial challengeon the path towards plasma-based particle colliders. This work pro-poses to use a finite radius plasma in a plasma wakefield acceleratoras a way to reduce the restoring force acting on the plasma electrons,resulting in an elongation of their on-axis return point and, hence,creating a long, high-density electron filament. [...]
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2019-10-23
12:50
[PUBDB-2019-03731] Master Thesis

In-situ Lumineszenzuntersuchungen von 4f-5d - und 4f-4f-Übergängen während der Synthese und in Phasenübergängen von $Ce^{3+}$- und $Eu^{3+}$- Komplexen
106 pp. () = Masterarbeit, University of Kiel, 2018

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2019-09-23
09:17
OpenAccess [PUBDB-2019-03421] Master Thesis

Confronting EFT with artificial neural networks in the quest for physics beyondthe Standard Model - Probing new paths for measuring dimension-6 operators in top-quark physics at LHC
Hamburg : University of Hamburg 64 pp. () [10.3204/PUBDB-2019-03421] = Masterarbeit, University of Hamburg, 2019  GO
As no sign of physics beyond the Standard Model has emerged at the Large Hadron Collider sofar, high precision measurements of particle properties and couplings become increasingly interesting.A commonly used language to interpret these measurements is effective field theory, inwhich higher-dimensional operators are added to the Standard Model. Traditional approachesmost commonly set constraints on anomalous couplings by employing and combining unfoldedmeasurements. [...]
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2019-09-04
13:44
OpenAccess [PUBDB-2019-03220] Master Thesis

Magnet Characterization and Beam Profile Monitor Development for a Spectrometer at the ARES Linac
1-137 () [10.3204/PUBDB-2019-03220] = Masterarbeit, University of Hamburg, 2019  GO
The aim for size and cost reduction of particle accelerators has generated great interest in thedevelopment of novel acceleration techniques beyond the current radio frequency based technology.Those techniques are, for example, dielectric laser accelerators (DLAs) and have thepotential to reduce the size and costs, due to their high field gradients and small acceleration periods.DLAs consist of structures which are characterized by apertures in the µm range, leadingto electron-bunch charges in the pC range. At the SINBAD (Short and INnovative Bunches andAccelerators at DESY) facility at DESY, various techniques are foreseen to be investigated usingthe ARES (Accelerator Research Experiment at SINBAD) linear accelerator. [...]
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2019-08-13
13:27
OpenAccess [PUBDB-2019-02999] Master Thesis

Plasma-Oberflächenbehandlung vonCFK zur Verbesserung der adhäsivenKlebeigenschaften
92 pp. () [10.3204/PUBDB-2019-02999] = Masterarbeit, Hamburg University of Applied Sciences, 2017  GO
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2019-06-08
12:21
OpenAccess [PUBDB-2019-02433] Master Thesis

Pseudo Nambu-Goldstone Boson Inflation
108 pp. () [10.3204/PUBDB-2019-02433] = Masterarbeit, University of Hamburg, 2019  GO
We investigate an early Universe inflationary phase driven by a pseudo Nambu-Goldstone boson. The setup is not only naturally protected in the sense of t’Hooft, but such particles are also ubiquitous in quantum and string theories. [...]
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2019-05-23
14:17
OpenAccess [PUBDB-2019-02359] Book/Report/Master Thesis

Systematic Studies of a Cavity Quench Localization System
[DESY-THESIS-2019-010]
Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY-THESIS 120 pp. () [10.3204/PUBDB-2019-02359] = Masterarbeit, Universität Hamburg, 2019  GO
Several tools for quench localization at Superconducting Radio Frequency cavities exist. One of these techniques uses the excitation of temperature waves in liquid Helium below the lambda point. [...]
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2019-04-30
14:11
OpenAccess [PUBDB-2019-02124] Master Thesis

Experimente zu metallischem Clusterwachstum während der Sputter Deposition im Vergleich zu kinetischen Monte Carlo Simulationen
97 pp. () [10.3204/PUBDB-2019-02124] = Masterarbeit, University of Hamburg, 2016  GO
Die Masterarbeit wurde in der Forschungsgruppe MiNaXS-P03 unter Leitung von Adj. Prof [...]
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2019-03-16
12:39
OpenAccess [PUBDB-2019-01564] Master Thesis

Produção de arames de Ni-Ti com gradiente funcional
Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa 55 pp. () [10.3204/PUBDB-2019-01564] = Masterarbeit, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2018  GO
The Ni-Ti alloys have superelastic characteristics and the shape memory effect. This set of characteristics makes this alloy more and more attractive, possessing several applications as in medicine, aeronautics, among others.However, in order to change the temperature range of phase transformations in this alloy, heat treatments are carried out. [...]
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