Master theses / Diploma theses

Actually, a Super-SIMS-Set-up is developed at the HZDR Ion Beam Centre (IBC) by connecting a conventional SIMS-source (SIMS = Secondary ion mass spectrometry) to a 6 MV tandem accelerator. Due to the acceleration of the extracted secondary ions to MeV-energies and their charge reversal from negative to positive ions, Super-SIMS can reach about 2 to 3 orders of magnitude lower detection limits (up to 10-12 or ppt, highly depending on analyte and matrix) as conventional SIMS. To understand and optimize the ion-optics needed for these challenging project calculations should be performed. All the existing hardware at the IBC, like einzel lenses, quadrupoles, magnets have to be implemented in the calculation. The tool to perform and visualize the ion optic calculations will be LIMIOPTIC (www.limioptic.de), which was built for the CologneAMS (http://www.cologneams.uni-koeln.de/) system similar to the setup DREAMS at the IBC. The results of these calculations have to be compared with real machine settings and used for improvement of the transmission parameters of the whole system.

• interest in modern analytical techniques
• student of physics
• experiences in simulation calculations
• You show initiative and good teamwork skills

start: immediately