ECRH Launcher for Four-Beam Injection on HL-2A Tokamak
ECRH Launcher for Four-Beam Injection on HL-2A Tokamak
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DOI：
10.1088/1009-0630/15/5/16
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发表时间：
2013-05
影响因子：
1.7
通讯作者：
Chao Wang;Jun Zhou;Mei Huang;He Wang;Gangyu Chen;J. Rao
中科院分区：
文献类型：
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作者：
Chao Wang;Jun Zhou;Mei Huang;He Wang;Gangyu Chen;J. Rao
在HL-2A装置上安装了用于四束注入的电子回旋共振加热(ECRH)发射器，并用于等离子体加热实验。该发射器可以通过一个0350 mm端口向托卡马克注入4束EC波束。这些EC波束是由Gycom公司生产的2套68 GHz/1 S和2套68 GHz/1.5 S回旋管产生的，每根最大输出功率为500kW。本文给出了发射器和等离子体中EC束的特性：在托卡马克横截面中心，束半径为31.7 mm；三维模型的热分析表明，对于500kW/1的S脉冲，镜面上的峰值温升仅为30℃；光线跟踪计算预测了满意的功率沉积。在等离子体实验中，六束光束被同时注入，其中包括来自这个发射器的四个光束和来自另一个发射器的两个光束。此外，获得ELM-y H模放电后，ECRH系统显示了发射器功能的可靠性和稳定性。
An Electron Cyclotron Resonance Heating (ECRH) launcher for four-beam injection has been installed on the HL-2A tokamak and used in plasma heating experiments. By the launcher, four EC wave beams can be injected into the tokamak through a 0350 mm port, which are generated from 2 sets of 68 GHz/1 s and 2 sets of 68 GHz/1.5 s gyrotron tubes manufactured by GYCOM, with maximum output power of 500 kW for each. In this paper, the properties of the EC beam in the launcher and plasma are presented: at the centre of the cross section of the tokamak, the beam radius is 31.7 mm; thermal analysis of a 3D model indicates that the peak temperature increase would be only 30°C at the mirror surface for a 500 kW/1 s pulse; ray-tracing calculation predicts satisfactory power deposition. In the plasma experiment, six beams including four beams from this launcher and two from another launcher have been injected simultaneously. Besides, obtaining ELM-y H-mode discharges, the ECRH system shows reliability and stability of the launcher functions.