Return To: Session EX5 - Transport, Internal Transport Barriers, H-Mode
Prev Page: (EX5/1) Dynamic Behavior Associated with Electric Field Transitions
Next Page: (EX5/4) Reduced Transport and E_R Shearing in Improved

(EX5/2) Formation Condition of Internal Transport Barrier in JT-60U Plasmas

Y. Koide, T. Fujita, T. Takizuka, H. Shirai, T. Hatae, A. Isayama, N. Isei, Y. Sakamoto, Y. Kamada, M. Kikuchi and the JT-60 Team

Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki-ken , 311-0193, Japan

Abstract.  Onset condition of Internal Transport Barrier (ITB) in reversed shear discharges was investigated. Local values of electron density, electron temperature, and ion temperature seem not to be essential for the ITB onset. Remarkable correlation between electron temperature gradient and magnetic shear was observed at the onset. In addition, ITB well outside the q-minimum position was found. Its onset condition seems to be continuous with that observed in negative shear region.

Read the full paper in PDF format.