On the avalanche generation of runaway electrons during tokamak disruptions

被引：21

作者：

Martin-Solis, J. R. ^{[1
]}

Loarte, A. ^{[2
]}

Lehnen, M. ^{[2
]}

机构：

[1] Univ Carlos III Madrid, Madrid 28911, Spain

[2] ITER Org, F-13067 St Paul Les Durance, France

来源：

PHYSICS OF PLASMAS | 2015年 / 22卷 / 08期

关键词：

Tokamak devices - Uncertainty analysis;

D O I：

10.1063/1.4927773

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

A simple zero dimensional model for a tokamak disruption is developed to evaluate the avalanche multiplication of a runaway primary seed during the current quench phase of a fast disruptive event. Analytical expressions for the plateau runaway current, the energy of the runaway beam, and the runaway energy distribution function are obtained allowing the identification of the parameters dominating the formation of the runaway current during disruptions. The effect of the electromagnetic coupling to the vessel and the penetration of the external magnetic energy during the disruption current quench as well as of the collisional dissipation of the runaway current at high densities are investigated. Current profile shape effects during the formation of the runaway beam are also addressed by means of an upgraded one-dimensional model. (C) 2015 AIP Publishing LLC.

引用

页数：12

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