Ruprecht Karls Universität Heidelberg
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Physikalisches Institut
Im Neuenheimer Feld 226
69120 Heidelberg

Tel: +49 6221-54 19600
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info@physi.uni-heidelberg.de
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Stellenangebote - Master Arbeiten

Master Arbeiten

Development of a new pixel detector in High Voltage-MAPS technologyAndré Schöning
Our group is developing new pixel detectors based on the High-Voltage MAPS (monolithic active pixel detector) technology. Monolithic pixel detectors are in many respects superior compared to standard hybrid silicon detectors. High Voltage-MAPS will be used for the new Mu3e experiment are also considered for the LHC-High Luminosity Upgrades. We offer several bachelor and master theses in this area.

Ionisation Loss in Monolthic Pixel SensorsAndré Schöning
Charged particles in matter loose energy by ionisation. This process is described by the Bethe-Bloch equation. In the past, this energy loss was experimentally determined by measuring the energy difference between incoming and outgoing particles. High Voltage Monolithic Active Pixel Sensors allow the direct measurement of the energy loss inside the sensor, where the size of active charge collection area is defined by the the bias voltage of the charge collecting diode. In a measurement campaign at the Paul Scherrer Institute (Switzerland) in 2021 several data sets have been collected with different sensors. The goal is to study both, the ionisation loss as well as the charge collection efficiency. The data are key for the understanding and design of the next generation of pixel sensors. Within this master thesis the ionisation loss inside the pixel sensor should be measured and modeled. The results should be used as input for simulations. Requirements: Programming skills (e.g. C++) and interest in particle physics and instrumentation techniques.


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