Bachelor- and master theses

The scope of the topics can be adjusted. Feel free to contact us.

• For the 2D version
• Hexagonal grid: finite difference time domain (FDTD) scheme exists for vacuum, need to add plasma effects, UPML absorbing boudary conditions
• 4^th order methods: central differences in time and space AND coupling to plasma, simultaneous 4^th order (simultaneous may not be possible)

• Microwave beam sent to plasma with several receiving antennas
• Each receiving antenna defines different beam geometry, probing a different poloidal position
• Correlation of signals from different positions yields poloidal rotation direction or the pitch angle of magnetic field lines
• Turbulence from codes can be used as input for realistic scenarios

• Mitre-bends are the typical waveguide components for highly oversized waveguides because they are more compact than continuous bends
• For moderately oversized waveguides, diffraction effects can partly be compensated with quasi-optical designs
• Quasi-optical mitre-bends can accurately be calculated with PROFUSION.
• The work consists of parameter studies for different ratios of wavelength and waveguide diameter and the investigation of the broadband performance.