Graduate theses of the AG Weinheimer

 PhD theses

Year Title Author
2023 Search for Dark Matter and other beyond the Standard Model physics with XENON1T and XENONnT Dr. Lutz Althüser
2023 Inelastic electron scattering in tritium gas and ppm-precise energy scale at the KATRIN experiment Caroline Rodenbeck
2022 Purification and characterization studies of TMBi for a novel PET-detector concept Simon-Nis Peters
2022 Development, construction and commissioning of a novel cryogenic distillation system for radon removal to a sub-μBq/kg level in the XENONnT dark matter experiment Dr. Denny Schulte
2021 Development of Fluorescence Detectors for Laser Spectroscopy Experiments at GSI/FAIR, and Measurement of Hyperfine Transitions between the 2^3P and 2^3S States in Helium-like Boron Dr. Axel Buß
2021 Second-Order Weak Decays in XENON1T and Future Xenon Time Projection Chambers [pdf] Dr. Christian Wittweg
2021 Laser spectroscopy of lithium-like carbon with a novel XUV detection system at the ESR and construction of a precision  high voltage divider for the CRYRI NG@ESR electron cooler [pdf] Dr. Daniel Mathias Winzen
2020 A Novel Quasi-Differential Method for MAC-E Filters and Determination and Control of the Electric Potentials of the KATRIN Experiment with a Stabilized Condensed Krypton Source and a UV Illumination System Dr. Alexander Fulst
2020 Measurement of the energy loss of 18.6 keV electrons on deuterium gas and determination of the tritium Q-value at the KATRIN experiment [pdf] Dr. Rudolf Sack
2019 Calibration and background reduction of the KATRIN experiment [pdf] Dr. Mariia Fedkevych
2019 Data analysis in the XENON1T Dark Matter Experiment [pdf] Dr. Miguel Ángel Vargas
2019 Precision high voltage at the KATRIN experiment and new methods for an absolute calibration at ppm-level for high-voltage dividers [pdf] Dr. Oliver Rest
2019 Background reduction by the inner wire electrode and set-up of the condensed krypton source at the neutrino mass experiment KATRIN [pdf] Dr. Stephan Dyba
2019 Intrinsic background reduction by cryogenic distillation for the XENON1T dark matter experiment [pdf] Dr. Michael Murra
2018 First observation of double electron capture in Xe-124 and detection prospects for underlying nuclear interaction mechanisms in direct dark matter search [pdf] Dr. Alexander Fieguth
2017 Beyond-Standard Model Neutrino Physics Sensitivity with KATRIN [pdf] Dr. Nicholas Steinbrink
2016 Design and commissioning of a monoenergetic photoelectron source and active background reduction by magnetic pulse at the KATRIN experiment [pdf] Dr. Jan Behrens
2016 Lifetime analysis of the HFS states in hydrogen- and lithium-like bismuth and development of an in-beam detection system for extreme UV photons [pdf] Dr. Jonas Vollbrecht
2015 Gas purification of the XENON dark matter search [pdf] Dr. Stephan Rosendahl
2014 High-field electrodes design and an angular-selective photoelectron source for the KATRIN spectrometers Dr. Michael Zacher
2014 Light Propagation and Reflection off Teflon in Liquid Xenon Detectors for the XENON100 and XENON1T Dark Matter Experiment [pdf] Dr. Cecilia Levy Brown
2013 Energy calibration and stability monitoring of the KATRIN experiment [pdf] Dr. Stephan Bauer
2013 Calibration of hot and cold dark matter experiments: An angular-selective photoelectron source for the KATRIN experiment and an apparatus to determine the reflection properties of PTFE for vacuum UV light [pdf] Dr. Karen Bokeloh
2013 Setup and calibration of a position sensitive microchannel plate detector and analysis of a test run optimizing the WITCH experiment [pdf] Dr. Peter Friedag
2013 Spectroscopy of the hyperfine transition in lithium-like bismuth at the ESR at GSI and an APD-based single-photon detector for laser spectroscopy on highly charged ions [pdf] Dr. Raphael Jöhren
2011 Untersuchung von Methoden zur Unterdrückung des Spektrometeruntergrunds beim KATRIN Experiment [pdf] Dr. Björn Hillen
2011 Background Reduction of the KATRIN Spectrometers: Transmission Function of the Pre-Spectrometer and Systematic Test of the Main-Spectrometer Wire Electrode [] Dr. Matthias Prall
2011 Solid electron sources for the energy scale monitoring  in the KATRIN experiment [pdf] Dr. Miroslav Zboril
 2009 Eine kondensierte 83mKr Kalibrationsquelle für das KATRIN-Experiment [pdf] Dr. Beatrix Ostrick
2009 Spectrometer-related background processes and their suppression in the KATRIN experiment [pdf] Dr. Kathrin Valerius
2007 Präzisionsüberwachung und Kalibration der Hochspannung für das KATRIN-Experiment [pdf] Dr. Thomas Thümmler

Diploma and Master theses

Year Title Author
2023 Evolution of the KATRIN energy scale measured with 83mKr Justus Beisenkötter
2023 Development of a coil-driven magnetically-coupled piston pump for ultra-clean applications Andria Michael
2023 Radon background evolution for XENONnT [pdf] Mark von Piechowski
2022 Simulations on an angular-selective photoelectron source and on an active transverse energy filter for the KATRIN experiment [pdf] Richard Salomon
2021 Angular selective electron detection using microchannel plates for a possible background reduction at the KATRIN experiment [pdf] Patrick Oelpmann
2021 Development of an electromagnetic drive for a magnetically-coupled piston pump for the dark matter project XENONnT Philipp Schulte
2021 Development of a test setup for a multipixel organometallic ionization detector [pdf] Nils Marquardt
2021 Signal calibration for XENON1T with the new data reconstruction framework straxen [pdf] Johanna Jakob
2021 Test setup for a fluorescence detector to be used in the laser cooling system at the new SIS100 accelerator at GSI [pdf] Lucas Garrido Gómez
2020 Development of a fast precision high voltage divider for electron-ion collision spectroscopy at CRYRING@ESR [pdf] Timo Dirkes
2020 Analysis of Krypton Conversion Electron Lines of the Gaseous Krypton-Tritium Source of KATRIN [pdf] Matthias Böttcher
2020 Shifted Analyzing Plane: Field optimization for background reduction of the KATRIN experiment [pdf] Benedikt Bieringer
2020 Search for the 2 decay of 136Xe to the $0^+_1$ excited state of 136Ba with XENON1T [pdf] Henning Schulze Eißing
2019 Frequency compensation for fast voltage measurements with the G35 precision HV divider at CRYRING@ESR [pdf] David Roth
2019 Set Up of a Purification and Measurement System for Organometallic Liquids for a Future PET Detector and Test Measurements with Tetramethylsilane [pdf] Simon Peters
2018 Upgrading and characterization of a magnetically-coupled piston pump for ultra-clean noble gas applications [pdf] Denny Schulte
2018 Development of a tabletop electro-spectrometer following the MAC-E-filter principle [pdf] Maik Schneider
2018 Modeling electric fields inside the XENON1T TPC and comparison to data Michael Wigard
2018 Energy calibration of the Münster dual-phase xenon time projection chamber [pdf] Kevin Gauda
2017 Light collection efficiency simulations of the XENON1T experiment and comparison to data [pdf] Lutz Althüser
2017 Absolute calibration of reference divider at 1 kV [pdf] Patrik Herud
2017 Aufbau und Funktionstest des CKrS-Positionssystems für das KATRIN-Experiment [pdf] Phillip Schindler
2016 XENON100 Dark Matter Search with the PAX Raw Data Processor for XENON1T [pdf] Christian Wittweg
2016 Investigations of Time-of-Flight Methods for the KATRIN Experiment [pdf] Alexander Fulst
2016 Further development of a XUV detector for spectroscopy measurements at the experimental storage ring at GSI [pdf] Christian Egelkamp
2016 Characterization of the Münster dual phase xenon TPC and of a newly developed magnetically driven piston pump [pdf] Axel Buß
2015 Optimization of 83mKr tracer diagnostics and design of the slow control for the purification system for XENON1T [pdf] Sergej Schneider
2014 Investigations of impurities in xenon gas with a cold-trap-enhanced quadrupole mass spectrometer [pdf] Alexander Fieguth
2014 Set up and test of a cryogenic distillation column for the XENON1T experiment [pdf] Michael Murra
2014 Inbetriebnahme der Präzisionshochspannung am Hauptspektrometer des KATRIN-Experiments [pdf] Oliver Rest
2014 Development of an angular selective electron gun for the KATRIN main spectrometer [pdf] Daniel Winzen
2013 Verbesserung der Nullellipsometrie bei festem Analysatorwinkel für das KATRIN-Experiment [pdf] Benjamin Grees
2013 Charakterisierung und Signalverarbeitung großflächiger RMD APDs für den Einzelphotonennachweis bei SPECTRAP Martin Surholt
2012 Simulation of Electron Neutrino Mass Measurements by Time-of-Flight with KATRIN [pdf] Nicholas Steinbrink
2012 Simulations of stored electrons in the Penning trap between the KATRIN spectrometers [pdf] Jan Behrens
2012 Set-up of the motion control and characterization of the ablation laser for the condensed 83mKr conversion electron sourece of the KATRIN experiment [pdf] Richard Bottesch
2012 Trace Gas Analysis of Krypton for the XENON Dark Matter Project [pdf] Hans Kettling
2011 Elektrostatisches Design der Pumpports des KATRIN-Hauptspektrometers [pdf] Matthias Dropmann
2011 Optimierung der Methoden und Messprozeduren zur Entfaltung der Energieverlustfunktion beim KATRIN-Experiment [pdf] Christopher Kranz
2011 Aufbau eines automatisierten Gassystems für die
kondensierte 83mKr-Kalibrationsquelle des KATRIN-Experiments [pdf]
Tim Schäfer
2011 Design of a 2-Phase Xenon Time Projection Chamber for Electron Drift Length Measurements [pdf] Johannes Schulz
2011 Alternative Ellipsometrie-Varianten bei kryogenen Temperaturen für das KATRIN-Experiment [pdf] Daniel Spitzer
2011 Construction and characterization of an experiment for reflection measurements with vacuum-UV-light [pdf] Andreas Sprenger
 2010 Entwicklung eines Detektoraufbaus zur Bestimmung der 2s-Hyperfeinstrukturaufspaltung von 209Bi80+ am Experimentierspeicherring an der GSI [pdf] Denis Anielski
2010 Aufbau und Inbetriebnahme des zweiten Präzisions-Hoch-
spannungsteilers bis 65 keV für das KATRIN-Experiment [pdf]
Stephan Bauer
2010 Entwicklung eines Lasersensors und Feldemissionsuntersuchungen für die Drahtelektrode im KATRIN-Hauptspektrometer [pdf] Sebastian Benning
2010 Angular defined photo-electron sources for the KATRIN experiment [pdf] Hendrik Hein
2010 Kalibrierte Photonenquellen für Testmessungen
von XENON- und SpecTrap-Detektoren [pdf]
Marcus Joswowitz
2010 Test and commissioning of the detector system in the 209Bi80+ experiment at the Experimental Storage Ring (ESR) at GSI [pdf] Rubén López-Coto
2010 Untersuchung von Eigenschaften und systematischen Effekten am WITCH Experiment [pdf] Jonas Mader
2010 Präzisionshochspannung für das KATRIN-Experiment [pdf] Stephan Rosendahl
2010 Laserellipsometrie für die kondensierte 83mKr-Konversionselektronenquelle des KATRIN-Experiments [pdf] Anne Wegmann
2009 Investigation of the muon-induced secondary electron background in the KATRIN Experiment [pdf] Henrik Arlinghaus
2009 Aufbau eines PET-Demonstrations-Experimentes und Anwendung von dessen FADC-basiertem Datenaufnahmesystem für Photoelektronenspektroskopie [pdf] Sebastian Streubel
2009 Electromagnetic design and field emission studies for the inner electrode system of the KATRIN main spectrometer [pdf] Michael Zacher
2008 Bahnverfolgungssimulationen für das WITCH-Experiment [pdf] Peter Friedag
2008 Untersuchung der APD S1315 von RMD im Hinblick auf ihren Einsatz als Detektor am SpecTrap Experiment [pdf] Daniel Hampf
2008 Weiterentwicklung der Präzisions-Hochspannungs-Messung für das KATRIN-Experiment [pdf] Frank Hochschulz
2008 Design of the electrode system of the KATRIN main spectrometer [pdf] Karen Hugenberg
2008 A Prototype Ion Source for the Functionality Test of the KATRIN Transport Section [pdf] Michael Schöppner
2008 Zählratenoprimierung und Hochspannungsmodifikation der kondensierten Konversionselektronen-Kryptonquelle (CKrS) für das KATRIN-Experiment [pdf] Jürgen Smollich
2008 Implementierung der Multipole Boundary Element Methode für das KATRIN Experiment [pdf] Sebastian Vöcking
2008 Entfaltung der Energieverlustfunktion beim KATRIN Experiment [pdf] Irina Wolff
2007 Entwicklung und Aufbau eines Prototypmoduls für die Drahtelektrode des KATRIN Hauptspektrometers [pdf] Alexander Gebel
2007 Erste Testmessungen der kondensierten Kryptonquelle für das KATRIN Experiment [pdf] Björn Hillen
2007 Entwicklung eines automatischen Messsystems zur Qualitätskontrolle der Elektrodenmodule für das KATRIN Hauptspektrometer [pdf] Raphael Jöhren
2007 Entwicklung eines Lasersensors und Materialcharakterisierung für die Drahtelektroden des KATRIN-Hauptspektrometers [pdf] Martina Reinhardt
2007 Aufbau einer vollautomatischen Ultraschallreinigungsanlage für die Drahtelektrode des KATRIN-Hauptspektrometers [pdf] Kim Temming
2005 Aufbau und Test des Gaseinlasssystems für die kondensierte 83mKr-Kalibrationsquelle des KATRIN-Experimentes (Univ. Bonn) [pdf] Matthias Prall
2004 Untersuchungen zur Penningfalle zwischen den Spektrometern des KATRIN Experiments (Univ. Bonn) Kathrin Essig
2004 Elektromagnetisches Design für das Hauptspektrometer des KATRIN Experiments (Univ. Bonn) [pdf] Dr. Kathrin Valerius
2002 Umbau des Mainzer Neutrinomassenexperiments und Untersuchungen im Hinblick auf KATRIN (Univ. Mainz) [pdf] Dr. Beatrix Ostrick
2002 Entwicklung von Methoden zur Untergrundreduzierung am Mainzer Tritium-β-Spektrometer (Univ. Mainz) [pdf] Dr. Thomas Thümmler

Bachelor theses

Year Title Author
2022 Investigation of Electric Field Effects with the Noble Element Simulation Technique NEST [pdf] Michael Ernst
2022 Investigations on a custom-made silicon-based microchannel plate as active transverse energy filter for the KATRIN experiment [pdf] Christian Gönner
2016 Thermodynamische Auslegung einer kryogenen Destillationssäule zur Entfernung von Radon aus Xenon Matthias Mensen
2022 Entwicklung einer Schrittmotoransteuerung für den Fluoreszenzdetektor am SIS100 [pdf] Niklas Nefigmann
2022 Charakterisierung des neuen Teststands für aktive Transversalenergiefilter für das KATRIN-Experiment Lukas Pöllitsch
2022 A Deep Learning-Based 3D Position Reconstruction for XENONnT [pdf] Philipp Thielges
2022 Untersuchung der Eigenschaften der neuen winkelselektiven Elektronenquelle am KATRIN-Experiment [pdf] Sarah Uthmann
2021 Charakterisierung eines positionsauflösenden MCP-Detektors zur Verwendung als Fluoreszenzdetektor am SIS100 bei FAIR [pdf] Robert Braun
2021 Simulations and measurements of angular selective electron transmission and detection for the KATRIN experiment [pdf] Tim König
2021 Messung des elektrischen Potentials und des magnetischen Feldes in der verschobenen Analysierebene des KATRIN-Experiments mit L3-32 83mKr Konversionselektronen [pdf] Justus Beisenkötter
2021 Coil test for a magnetically-coupled piston pump for the dark matter experiment XENONnT Leo Flehinghaus
2021 Development of a detector for charge mobility measurements in TMBi [pdf] Tim Engling
2019 Design and test of a detector for charge read-out in TMBi [pdf] Nils Marquardt
2019 Development of a Setup to test Time-Of-Flight Methods for the KATRIN Experiment [pdf] Richard Salomon
2019 Synchronization of a magnetically-coupled piston pump for the radon distillation column at XENONnT [pdf] Philipp Schulte
2019 Magnetic field and fluid flow simulations with COMSOL Multiphysics optimizing the magnetically-coupled piston pump at XENON1T Fabian Wewel
2018 Charakterisierung von Einzel-Photon Detektoren für Laserspektroskopie Experimente im Rahmen der SPARC Kollaboration [pdf] Tom Tüshaus
2018 Investigation of Rn-220 decays with the Münster xenon TPC and scintillation calibration detectors Julian Rasmus Bankwitz
2017 Design einer Frequenzkompensation des 35kV-Präzisionshochspannungsteilers für den CRYRING@ESR an der GSI/FAIR [pdf] Timo Dirkes
2017 Designing and optimizing the UV illumination of the rear wall at the KATRIN experiment by simulation [pdf] Benedikt Bieringer
2017 Investigations of the Münster dual phase xenon time projection chamber [pdf] Henning Schulze Eißing
2016 Weiterentwicklung der Laser-Ellipsometrie für den Aufbau der neuen Krypton-Quelle an der CPS [pdf] Melanie Höschele
2016 Charakterisierung der Präzisionswiderstände des Spannungsteilers für CRYRING [pdf] Ilian Denesjuk
2016 General aspects of calibration of the Muenster dual phase xenon TPC [pdf] Nicolai Krybus
2016 Capacitance-Based Levelmeter Read-Out for the Münster Dual Phase Xenon Time Projection Chamber [pdf] Denny Schulte
2016 Monte-Carlo-Simulation eines Nachweissystems für Einzelphotonen am Speicherring CRYRING [pdf] Dominik Thomas
2015 Charakterisierung von Komponenten und Geräten für die Präzisionshochspannungsmessung beim KATRIN-Experiment und beim CRYRING-Speicherring [pdf] Maurice Friedrich
2015 Adaption of the PC-Ellipsometry for the Condensed Krypton Calibration Source Setup, Converted for the Operation at the KATRIN-Experiment [pdf] Simon Peters
2015 Implementation of a Fiberglass Feed-Through into the Muenster Time Projection Chamber for the Calibration of the Photomultipliers using a LED Pulser Julian Blanke
2015 GEANT4 simulations of the Münster dual phase xenon tpc [pdf] Lutz Althüser
2015 Optimierung eines XUV-Detektors, für den Einsatz am experimentellen Speicherring, an der GSI [pdf] Florian Trittmaack
2014 Kernprozesse in der Sonne und die Oszillation solarer Neutrinos Christopher Rittmeier
2014 Characterisation of a photocathode for a monoenergetic electron source for the KATRIN experiment [pdf] Raffaela Busse
2014 Kalibrationsaspekte der kryogenen Destillationssäule für das XENON1T-Experiment [pdf] David Roth
2014 Design of a Tabletop Spectrometer following the MAC-E-Filter Principle [pdf] Maik Schneider
2014 Untersuchung von InGaAs-Avalanche Photodioden auf Tauglichkeit zum Einzelphotonennachweis Christoph Schweiker
2013 Design and test to construct a magnetically driven piston pump for use in high-purity xenon experiments [pdf] Axel Buß
2013 In Situ Characterization of Photomultiplier Tubes for a Dual Phase Xenon Time Projection Chamber in Münster [pdf] Benjamin Hetz
2013 Readout and control of a UHV manipulator for calibration mesurements at the KATRIN main spectrometer [pdf] Lorenz Josten
2013 Simulation of the transmission and time of flight properties of the KATRIN main spectrometer Oliver Ledwig
2013 Set up of a tunable UV light source for the KATRIN experiment Alexander Potthoff
2013 Calibration Methods for a Distillation Column for the XENON1T Dark Matter Experiment [pdf] Martin Schlak
2013 Set-up and test of the slow control and calibration of the photomultiplier of an apparatus to measure the reflectivity of teflon in LXe at VUV wavelengths Florian Sprenger
2012 Measurement of Kr-83m Doping in Xenon Gas for Calibration and Tracer Applications [pdf] Sergej Schneider
2011 Construction and test of a detector for sensitive detection of 83mKr in Xenon gas [pdf] Alexander Fieguth
2011 Investigations of Avalanche Photodiodes
for single photon detection [pdf]
Frederik Kuschewski
2011 Set up of an ablation laser system for the Krypton conversation electron source of the KATRIN experiment [pdf] Michael Murra
2011 Setup and test of an electron monitor detector for the KATRIN experiment [pdf] Oliver Rest
 2010 Aufbau und Test eines Wasser-Cherenkov-Detektors zur Demonstration kosmischer Strahlung [pdf] Matthias Brandt
2010 Setup and Test of a Plastic Scintillator Detector for the Demonstration of Cosmic Ray [pdf] Artur Sperling
2009 Improvement of the MiniPET-experiment [pdf] Ole Hinrichs
2009 Setup of the mass spectrometer and high Vacuum experiment for the bachelor laboratory class „Scientific Instrumentation" [pdf] Andreas Sprenger