Summary and Conclusion

Abstract

The aim of this work was to investigate the impact of plasma dynamics on PWI processes with a newly developed time-resolved Thomson scattering diagnostic, which is motivated by the potential influence of plasma fluctuations on PWI. In the course of this work the laser based plasma diagnostic setup was designed, built and installed on PSI-2. Accompanied by Langmuir probes and two fast imaging cameras, a photon counting algorithm and conditional averaging, the Thomson scattering system proved the ability of time-resolved measurements. Two selected discharge cases were analyzed with a time resolution of ${3}\,\upmu \mathrm{s}$ as a proof-of-principle for this analysis. The conclusions for this work include the implications concerning the Thomson scattering itself and other diagnostic directly or indirectly involved, especially with respect to the diagnostic limits to detect filaments in plasma turbulence. These findings are then applied to PWI in general as they are of interest for erosion in fusion reactors and to the operation of the linear plasma generators PSI-2 and JULE-PSI.