We provide an overview of activities carried out at the TJ-II stellarator for improving our understanding of- and developing plasma physics models for particle density profiles in stellarators. Namely, we report on recent progress in turbulent particle transport simulation, validation of pellet deposition models, density profile shaping for performance control and new experimental techniques for edge turbulence and plasma-neutral interaction.
This paper provides an overview of research on particle density profiles in stellarators, focusing on the TJ-II device. It covers progress in simulating turbulent particle transport, validating pellet deposition models, shaping density profiles for performance control, and developing new techniques to study edge turbulence and plasma-neutral interactions.