Current understanding of divertor detachment: Experiments and modelling

被引：54

作者：

Wischmeier, M. ^{[1
]}

Groth, M. ^{[2
]}

Kallenbach, A. ^{[1
]}

Chankin, A. V. ^{[1
]}

Coster, D. P. ^{[1
]}

Dux, R. ^{[1
]}

Herrmann, A. ^{[1
]}

Mueller, H. W. ^{[1
]}

Pugno, R. ^{[1
]}

Reiter, D. ^{[3
]}

Scarabosio, A. ^{[1
]}

Watkins, J. G. ^{[4
]}

机构：

[1] EURATOM, Max Planck Inst Plasmaphys, D-85748 Garching, Germany

[2] Lawrence Livermore Natl Lab, Livermore, CA USA

[3] EURATOM, Inst Energieforsch, Julich, Germany

[4] Sandia Natl Labs, Albuquerque, NM 87185 USA

来源：

JOURNAL OF NUCLEAR MATERIALS | 2009年 / 390-91卷

基金：

欧盟地平线“2020”;

关键词：

PLASMA RECOMBINATION; ASDEX UPGRADE; JET MKIIGB; PHYSICS; TOKAMAK; FIELD;

D O I：

10.1016/j.jnucmat.2009.01.081

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A qualitative as well as quantitative simulation of experimentally observed plasma parameters in the detached regime proves to be difficult for several tokamaks. A series of ohmic discharges have been performed in ASDEX Upgrade and DIII-D at as similar as possible plasma parameters and at different line averaged densities, (n) over bar (e). The experimental data represent a set of well diagnosed discharges against which numerical simulations are compared. For the numerical modelling the fluid-code B2.5 coupled to the Monte Carlo neutrals transport code EIRENE is used. Only the combination of effects, such its geometry, drift terms, neutral conductance, increased radial transport and divertor target composition explains a significant fraction of the experimentally observed ion fluxes, Gamma(t), to the inner and outer target plates as a function of (n) over bar (e) in ASDEX Upgrade. The relative importance of the mechanisms leading to detachment differ in DIII-D and ASDEX Upgrade. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：250 / 254

页数：5

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