Turbulence in plasma surface interaction holds crucial uncertainties for its impact on material
erosion in the operation of fusion reactors. In this thesis the design development and
operation of a Thomson scattering diagnostic and its novel implementation with fast visual
imaging created a versatile tool to investigate intermittently occuring plasma oscillations.
Specifically ballistic transport events in the plasma edge constituting turbulent transport
have been targeted in this thesis. With the help of a custom photon counting algorithm the
conditional averaging technique was applied on Thomson scattering for the first time to allow
spatial and pseudo-time-resolved measurements.Since plasma turbulence and the emerging
transport phenomena are comparable in most magnetized devices the diagnostic development and
the results from the linear plasma device PSI-2 are useful for an implementation of similar
techniques in larger fusion experiments. Furthermore the obtained results indicate a strong
enhancement of erosion with turbulent transport and thus underline the importance of dedicated
experiments investigating plasma turbulence in the framework of erosion in future fusion
reactors.
