Internal transport barrier with improved confinement in the JT-60U tokamak
- 1 July 1996
- journal article
- Published by IOP Publishing in Plasma Physics and Controlled Fusion
- Vol. 38 (7) , 1011-1022
- https://doi.org/10.1088/0741-3335/38/7/006
Abstract
Characteristics of the internal transport barrier (ITB) were studied. The region of steep and , i.e. the ITB front, propagated from the core outwards. The thickness of the ITB front was about 3 cm. The ITB worked as a particle transport barrier as well as a thermal transport barrier for ions. The threshold heating power for ITB formation strongly increased with electron density and was independent of the toroidal magnetic field. ITB with was sustained for twice the global energy confinement time . A repetitive relaxation phenomenon at ITB was observed, which induced spikes like ELMs but had a different poloidal distribution.Keywords
This publication has 7 references indexed in Scilit:
- MHD behaviour in high- betapand high- betaNdischarges in JT-60UPlasma Physics and Controlled Fusion, 1995
- Formation of internal and edge transport barriers in JT-60UPlasma Physics and Controlled Fusion, 1994
- Achievement of high fusion triple product in the JT-60U high pH modeNuclear Fusion, 1994
- Internal transport barrier onq=3 surface and poloidal plasma spin up in JT-60U high-dischargesPhysical Review Letters, 1994
- JT-60U latest results and future prospectsPhysics of Fluids B: Plasma Physics, 1992
- The H-Mode of ASDEXNuclear Fusion, 1989
- Effect of Toroidal Field Ripple on Fast Ion Behavior in a TokamakJournal of the Physics Society Japan, 1981