Impurity Transport Studies on LHD

Measurement methods for experimental impurity transport studies

Rotation and Impurity Studies in the presence of MHD activity and Internal Transport Barriers on TCV

This thesis focuses on measurements of toroidal rotation and impurity profiles in improved plasma scenarios and in the presence of MHD activity. These experiments were performed on TCV, the Tokamak à Configuration Variable in Lausanne. In TCV, plasma rotation is measured by the charge exchange recombination spectroscopy diagnostic (CXRS). The CXRS is associated with a low power diagnostic neutr...

Impact of impurity on kinetic estimates from transport and inhibition studies.

Although in vitro transport/inhibition studies are commonly performed on impure drug candidates to screen for pharmacokinetic properties in early development, quantitative guidelines concerning acceptable impurity levels are lacking. The broad goal was to derive models for the effect of impurity on transport and inhibition studies and identify the maximum allowable impurity level that does not ...

Modeling of Helium Transport and Exhaust in the LHD Edge

Radial Interaction in Dynamic Heat Transport of LHD Plasmas

The radial interaction of heat transport is clarified by cross-correlation between electron heat flux and electron temperature gradient in LHD. Correlations between the heat transport dynamics and the radial structures of turbulence are also investigated. The existence of a turbulence modulator is discerned by using the conventional reflectometry signals. The amplitude of high frequency (> 100k...