Transport reduction mechanism in negative triangularity tokamak

Kikuchi, Mitsuru; Takizuka, Tomonori*; Furukawa, Masaru*

no journal, , 

While negative triangular tokamak configuration has possibility to improve power handling capability, mechanism of improved confinement observed in TCV is still not fully understood. In this talk, we will summarize present understanding of linear eigenmode structure of toroidal drift waves and also flow shear suppression of turbulence.