Numerical modelling of limiter biasing experiments on TEXTOR-94

被引：2

作者：

Gerhauser, H

Mank, G

Zagórski, R

Loarer, T

Gunn, J

Boucher, C

机构：

[1] Forschungszentrum Julich, Inst Plasmaphys, EURATOM Assoc,Trilateral Euregio Cluster, D-52425 Julich, Germany

[2] Inst Plasma Phys & Laser Microfus, PL-00908 Warsaw, Poland

[3] CEN Cadarache, Ass EURATOM CEA Fus Controlee, F-13108 St Paul Les Durance, France

[4] Univ Quebec, INRS Energie & Mat, Varennes, PQ J3X 1S2, Canada

来源：

CZECHOSLOVAK JOURNAL OF PHYSICS | 2001年 / 51卷 / 10期

关键词：

D O I：

10.1023/A:1012842000311

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The 2D multifluid code TECXY has been used to model the experimental biasing of the toroidal belt limiter ALT-II on the tokamak TEXTOR-94 with respect to the first wall. It is well known that the edge flow pattern can be influenced by the poloidal electric drifts from imposing radial electric fields. The modelling with TECXY introduces imprinted bias currents in the scrape-off layer for the case of negative (limiter) biasing, and imprinted bias potentials for the case of positive biasing. This allows to simulate sufficiently well the experimental current-voltage characteristics for either biasing and also reproduces the essential features and trends of the observed plasma profiles in the SOL. A moderate negative biasing is found to be optimal for the exhaust efficiency of the pump limiter.

引用

页码：1033 / 1046

页数：14