Thesis topics

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Stefan Roth

T2K/TPC

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+49 241 80 27296

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  • Would you like to work in the field of neutrino physics, an exciting part of modern particle physics?
  • Are you interested in the detector development, especially of gaseous particle detectors?
  • Are you fascinated by the opportunity doing research as part of an international collaboration of institutes worldwide with the experiment located in Japan?

Then the T2K experiment would be an ideal place to perform your final thesis. Further informations on the goals and the setup of the T2K experiment can be found here, informations about the T2K group at the RWTH there .

Gas-filled detector systems are present in almost every experiment of high-energy physics. The application areas range from radiation-resistant Micropattern gas detectors, which monitor the loss of beam particles at accelerators, to large-volume drift chambers with an instrumented volume in the order of cubic meters.

Our group is involved in the development of one type of these largest drift chambers, the so-called Time Projection Chambers (TPC). We are also involved in fundamental research into the properties of drift chamber gases. As part of the T2K neutrino experiment in Japan, our research interest is also directed towards drift chambers that use gas under high pressure high pressure gas detectors , as these are of interest for future large-scale experiments in neutrino physics.

Bachelor's thesis topics:

Zur Entwicklung neuer gasbasierter Teilchendetektoren für die Neutrinophysik sollen verschiedene Gasmischungen im Labor hergestellt und in den vorhandenen Detektoren getestet werden. Gaseigenschaften wie Gasverstärkung, Driftgeschwindigkeit und Diffusion hängen sehr stark von Umgebungsparametern ab. Für diese Vorhaben in unserem Labor ergeben sich zwei Bachelorarbeiten:

  • Inbetriebnahme und Kalibrierung eines Gaschromatographen (Hardware)
  • Entwicklung und Bau eines Massenflussmessers (Hardware)

In dem bereits vorhandenen Gassystem integriert sind mehrere Driftkammern, welche durchgehend Gaseigenschaften vermessen. Die Erweiterung der Messmöglichkeiten auf einen weiteren Messparameter und
die kombinierte Analyse der genommen Daten sind zwei weitere Bachelor-Themen:

  • Bestimmung der Gaszusammensetzung aus Driftkammer-Parametern (Analyse)
  • Bestimmung des ersten Townsend-Koeffizienten (Hardware)

Einzelne freie Elektronen in unseren Gasdetektoren werden durch Stoßionisation in starken elektrischen Feldern vervielfältigt, bevor sie ausgelesen werden. Diese Verstärkung passiert mit Hilfe sogenannter MicroMeGaS. Die Simulation des so entstanden Rohsignals und Studien zu möglichen Upgrades unserer MicroMeGaS sind zwei weitere Bachelor-Themen:

  • Garfield++ Simulation von MicroMeGaS (Simulation)
  • Auflösungsstudien zu MicroMeGaS (Simulation)

Master's thesis topics:

In gas amplified electron clouds, a very fast electron-induced signal precedes a slower, more flat ion-induced signal part. The correct timing of those signals are important for the reconstruction of time dependent parameters such as the drift velocity of electrons in gases. A design of an electronic amplification stage, which transmits and amplifies the signals without distortion, is needed for high-precision measurements and is offered as a possible master's thesis topic:

  • Development of an Amplifier for Drift Chamber Applications (Hardware)

For none of the topics knowledge of programming is a prerequisite, but programming skill will be acquired during the thesis. In case of interest or questions please contact us.