Influence of large dust particles on plasma performance in the HL-2A tokamak

被引：3
|
作者：
Huang, Z. H. [1 ]
Yan, L. W. [1 ]
Feng, Z. [1 ]
Cheng, J. [1 ]
Tomita, Y. [1 ]
Liu, L. [1 ]
Gao, J. M. [1 ]
Zhong, W. L. [1 ]
Jiang, M. [1 ]
Yang, Q. W. [1 ]
Xu, Y. [1 ]
Duan, X. R. [1 ]
机构：
[1] Southwestern Inst Phys, Chengdu 610041, Sichuan, Peoples R China
来源：
JOURNAL OF NUCLEAR MATERIALS | 2015年 / 463卷
基金：
美国国家科学基金会;
关键词：
DIVERTOR;
D O I：
10.1016/j.jnucmat.2014.11.021
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Visible dust particles generated from plasma-facing components (PFCs) and the impact of the dusts on plasma performance as a source of impurities have been studied in the HL-2A tokamak by means of a fast framing camera together with other diagnostics. The camera images display that during a steady state discharge the dusts are accelerated toriodally by the ion drag force and radially by the centrifugal force. The first experimental evidence shows that dust particles originating from the high field side (HFS) lead to a significant reduction of central electron temperature and divertor heat flux, a considerable rise of total radiated power and effective charge, and a slight growth of local electron density. The results reveal that the dusts at the HFS have much stronger effects on plasma performance than those at the low field side (LFS). (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：856 / 860
页数：5
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