点击次数：

论文类型：期刊论文

发表时间：2014-10-01

发表刊物：11th International Symposium on Fusion Nuclear Technology (ISFNT)

收录刊物：SCIE、EI、CPCI-S

卷号：89

期号：7-8

页面范围：1019-1023

ISSN号：0920-3796

关键字：Runaway electrons; Runaway electron current; Magnetic perturbation; Toroidal effect

摘要：The generation and diffusion of runaway electrons (REs) during major disruptions in the HL-2A tokamak has been studied numerically. The diffusion caused by the magnetic perturbation is especially addressed. The simulation results show that the strong magnetic perturbation (delta B/B similar to 1.0 x 10(-3)) can cause a significant loss of REs due to the radial diffusion and restrain the RE avalanche effectively. The results also indicate that the REs are generated initially in the plasma core during disruptions, and that the toroidal electric field does not exhibit a centrally hollow phenomenon. In addition, it is found that the toroidal effects have little impact on the generation of RE and the evolution of toroidal electric field. (C) 2014 Elsevier B.V. All rights reserved.