Role of radial electric field and plasma rotation in the time evolution ofinternal transport barrier in JT-60U

Authors
Shirai, H Kikuchi, M Takizuka, T Fujita, T Koide, Y Sakamoto, Y Naito, O Hatae, T Isayama, A Kamada, Y Azumi, M
Citation
H. Shirai et al., Role of radial electric field and plasma rotation in the time evolution ofinternal transport barrier in JT-60U, PLASMA PHYS, 42, 2000, pp. A109-A115
Citations number
8
Categorie Soggetti
Physics
Journal title
PLASMA PHYSICS AND CONTROLLED FUSION
ISSN journal
07413335 → ACNP
Volume
42
Year of publication
2000
Supplement
5A
Pages
A109 - A115
Database
ISI
SICI code
0741-3335(200005)42:<A109:ROREFA>2.0.ZU;2-L
Abstract
The effects of radial electric field and plasma rotation on the characteris tics of internal transport barriers (ITBs) and core confinement properties are studied in JT-60U reversed shear plasmas. The combination of on-axis an d off-axis tangential NBI in the co- and counter-directions allows various profiles of the toroidal rotation. With the same core absorbed power, the c ase of a small momentum source at the ITB layer is more favourable for sust ainment of the ITB layer and the retention of the core energy confinement t han the cases of the excess co- or counter-momentum source.