Disruptions - a proposal for their mitigation by runaway suppression

被引：9

作者：

Finken, KH ^{[1
]}

Kraemer-Flecken, A ^{[1
]}

Lehnen, M ^{[1
]}

Savtchkov, A ^{[1
]}

机构：

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

来源：

JOURNAL OF NUCLEAR MATERIALS | 2003年 / 313卷

关键词：

plasma wall interaction; disruptions; mitigation; runaway electrons; power flux;

D O I：

10.1016/S0022-3115(02)01527-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The avoidance of disruptions is essential for the next generation. tokamaks. The dangerous consequences of disruptions are excessive heat loads, high forces, creation of high-energy runaway electrons, and a bad conditioning for the start of the following discharge. In order to mitigate these effects, a fast valve has been developed on TEXTOR with a response time to full opening of 1 ms after a trigger pulse. The fast injection of helium by such a valve suppresses runaway electron production and even removes them if present. The reaction time of the valve is. fast enough to apply it even after the start of a disruption. The fast gas injection has been applied to a nearly stationary runaway discharge and it was successfully shown that the energetic electrons are quickly expelled. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：1247 / 1252

页数：6

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