On the ECCD current density profile with particle diffusion in eITBs and its impact on the q-profile

Journal Article · Thu Nov 30 00:00:00 EST 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2404559· OSTI ID:20895132

Asp, E; Sauter, O; Coda, S; Fable, E; Goodman, T P; Turri, G; Udintsev, V S; Zucca, C ^[1]

---

1. Ecole Polytechnique Federale de Lausanne (EPFL), Centre de Recherches en Physique des Plasmas, Association Euratom-Confederation Suisse, CH-1015 Lausanne (Switzerland)

The Fokker-Planck code CQL3D has been used to investigate the effect of radial particle diffusion on ECCD current density profiles in the TCV tokamak. For two discharges with electron internal transport barriers (eITB), the jcd and the resulting q-profile have been calculated and reconstructed. The studied eITBs are of two kinds: fully sustained non-inductive eITB with off-axis co-current ECCD, or with a large Ohmic current and on-axis counter ECCD. It is shown that different diffusion profiles do modify the ECCD current density profiles, but that the resulting q-profiles are less influenced due to the resulting necessary self-consistent inductive current contribution.

• OSTI ID: 20895132
• Journal Information: AIP Conference Proceedings, Vol. 871, Issue 1; Conference: Joint Varenna-Lausanne international workshop on theory of fusion plasmas, Varenna (Italy), 28 Aug - 1 Sep 2006; Other Information: DOI: 10.1063/1.2404559; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
C CODES
CHARGED-PARTICLE TRANSPORT
CURRENT DENSITY
ECR CURRENT DRIVE
ECR HEATING
FOKKER-PLANCK EQUATION
PLASMA
PLASMA SIMULATION
TCV TOKAMAK