Particle exhaust and recycling control by active divertor pumping in EAST

被引：4
|
作者：
Hu, Q. S. [1 ]
Li, J. G. [1 ]
Li, Q. [1 ]
Wang, X. M. [1 ]
Hu, J. S. [1 ]
Wang, J. [1 ]
Yan, N. [1 ]
Zhang, L. [1 ]
Fu, J. [1 ]
Wu, J. [1 ]
Zhou, H. S. [1 ]
Luo, G. N. [1 ]
Guo, H. Y. [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
[2] Tri Alpha Energy Inc, Rancho Santa Margarita, CA 92688 USA
来源：
JOURNAL OF NUCLEAR MATERIALS | 2011年 / 415卷 / 01期
关键词：
D O I：
10.1016/j.jnucmat.2010.11.106
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The EAST tokamak was built to carry out long pulse plasma discharges up to 1000 s. To facilitate this, an active divertor pumping (ADP) system was installed under the lower outer (LO) divertor target plate (DTP) for plasma density control and impurity exhaust. The ADP system was used in the first EAST divertor physics campaign, and achieved very promising results on neutral gas particle exhaust and recycling control. The system can improve divertor screening for neutrals and reduce the ratio H/(H + D), and appears to be effective at controlling the main chamber hydrogenic recycling. The influence of ADP on lower inner (LI) and LO DTP is observed. Furthermore, we attempt to find an optimized strike point to mitigate DTP heat load during ADP operation. This article reports on these interesting results, in particular, the lower single null (LSN) plasma configuration. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：S395 / S399
页数：5
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