Fueling Performance of Supersonic Molecular Beam Injection on the J-TEXT Tokamak

被引：4
|
作者：
Xiao, Jinshui [1 ]
Yang, Zhoujun [1 ]
Ge, Zhuang [1 ]
Cheng, Zhifeng [1 ]
Feng, Xiande [1 ]
Wang, Zhijiang [1 ]
Liu, Minghai [1 ]
机构：
[1] Huazhong Univ Sci & Technol, State Key Lab Adv Electromagnet Engn & Technol, Wuhan 430074, Peoples R China
来源：
IEEE TRANSACTIONS ON PLASMA SCIENCE | 2013年 / 41卷 / 12期
关键词：
Fueling performance; supersonic molecular beam injection (SMBI) system; tokamak; PLASMA BEHAVIOR;
D O I：
10.1109/TPS.2013.2286205
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 supersonic molecular beam injection (SMBI) system was developed on the J-TEXT tokamak. With SMBI fueling, a continuous electron density increase was successfully achieved when multiple-pulse injection was employed. A steeper density profile was observed during the penetration process. A high fueling efficiency, between 20% and 45%, was obtained in limiter/ohmic discharges, suggesting that SMBI is a superior fueling method. SMBI efficiency decreased with increasing background electron density. Analyses of the penetration process with a Ha array and a CCD camera suggest the ionization mainly concentrates in the SOL and plasma edge region.
引用
收藏
页码：3675 / 3679
页数：5
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