Runaway electron generation during disruptions in the J-TEXT tokamak

被引：42

作者：

Zeng, L. ^{[1
]}

Chen, Z. Y. ^{[2
]}

Dong, Y. B. ^{[3
]}

Koslowski, H. R. ^{[4
]}

Liang, Y. ^{[4
]}

Zhang, Y. P. ^{[3
]}

Zhuang, H. D. ^{[1
]}

Huang, D. W. ^{[2
]}

Gao, X. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China

[2] Huazhong Univ Sci & Technol, Coll Elect & Elect Engn, State Key Lab Adv Electromagnet Engn & Technol, Wuhan 430074, Peoples R China

[3] Southwestern Inst Phys, Chengdu 610041, Peoples R China

[4] Forschungszentrum Julich, Inst Energie & Klimaforsch, Plasmaphys, D-52425 Julich, Germany

来源：

NUCLEAR FUSION | 2017年 / 57卷 / 04期

关键词：

runaway electron; disruption; magnetic fluctuations; hot tail RE generation; MAJOR DISRUPTIONS; AVALANCHE;

D O I：

10.1088/1741-4326/aa57d9

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 systematic study of disruption-generated runaway electrons has been performed in the J-TEXT tokamak. During the intended disruption by the argon injection in J-TEXT, the runaway electron plateau is more easily obtained with a higher loop voltage and shorter onset time of high loop voltage. Magnetic fluctuations are observed at the beginning of the current quench during the disruptions. The generated runaway electron (RE) current is larger at a lower level of magnetic fluctuation. Experimental evidence supporting that the theory of hot tail RE generation might be playing a role has also been found. With higher temperature before the disruption, more REs are generated via the hot tail mechanism during the thermal quench. By increasing the hot tail RE generation by increasing the temperature, an obvious RE plateau is observed even with a low toroidal magnetic field (1.2 T).

引用

页数：9

共 50 条

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