Speaker
M.J. Choi
(EPS 2019)
Description
See full abstract here
http://ocs.ciemat.es/EPS2019ABS/pdf/P2.1073.pdf
Non-diffusive avalanche-like transport events are observed in the L-mode and the weak ITB core plasmas in KSTAR when magnetohydrodynamic instabilities are absent. This observation implies that the avalanche-like event are a prevalent and universal process in the electron heat transport of tokamak plasmas. In addition, the electron temperature profile corrugation, which indicates the existence of the E×B shear flow layers, is clearly demonstrated. The measured width of the corrugation is around 45i. The avalanche activity is limited by this mesoscale shear flow structure, and the long range (macroscale) avalanche-like event occurs after the flow structure is destroyed.
