Progress of high power and long pulse ECRH system in EAST
Progress of high power and long pulse ECRH system in EAST
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DOI：
10.1016/j.fusengdes.2015.03.042
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发表时间：
2015-10
影响因子：
1.7
通讯作者：
Xiaojie Wang;Fukun Liu;J. Shan;Handong Xu;DajunWu;Bo Li;W. Wei;Jian Zhang;Yiyun Huang;Yunying Tang;Weiye Xu;Huaichuan Hu;Jing Wang;Li Xu;Liyuan Zhang;Jianqiang Feng
中科院分区：
文献类型：
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作者：
Xiaojie Wang;Fukun Liu;J. Shan;Handong Xu;DajunWu;Bo Li;W. Wei;Jian Zhang;Yiyun Huang;Yunying Tang;Weiye Xu;Huaichuan Hu;Jing Wang;Li Xu;Liyuan Zhang;Jianqiang Feng
根据实验先进超导托卡马克（EAST）的长脉冲目标，中国科学院等离子体物理研究所（ASIPP）目前正在建设一套电子回旋共振加热（ECRH）系统，该系统具有4MW功率、140GHz、脉冲长度长达1000s、使用非常模二次谐波（X2）。该系统的任务是提供中央加热、电流驱动、等离子体轮廓定制和磁流体动力学 (MHD) 不稳定性控制。连续波 (CW) 功率通过低损耗真空波导传输线从回旋管传输到 EAST。考虑到 EC 系统的多样化应用，前转向发射器设计为在几乎整个等离子体横截面注入四个单独转向的光束。光束的发射角度可以连续变化，极向方向超过30°，环形方向超过±25°的优化扫描范围，并且在放电过程中将通过传输线中一对偏振器的方向来调整偏振，以在不同的操作场景下保持最高的吸收。第一个 2 MW 系统将于 2014 年底开始调试。
In accordance with the long pulse objectives of the Experimental Advanced Superconducting Tokamak (EAST), an electron cyclotron resonance heating (ECRH) system with the feature of 4 MW power for a pulse length up to 1000 s at 140 GHz, using second harmonic of the extraordinary mode (X2) is presently under construction at the institute of plasma physics, Chinese academy of sciences (ASIPP). The missions of the system are to provide central heating, current drive, plasma profile tailoring and control of magneto-hydrodynamic (MHD) instabilities. The continuous wave (CW) power is transmitted from the gyrotrons to EAST via low-loss evacuated waveguide transmission lines. Considering the diverse applications of the EC system, the front steering launcher is designed to inject four individually steered beams across nearly the entire plasma cross section. The beam's launch angles can be continuously varied with the optimized scanning range of over 30° in poloidal direction and ±25° in toroidal, as well as the polarization will be adjusted during the discharge by the orientations of a pair of polarizers in the transmission line to maintain the highest absorption for different operational scenarios. The commissioning of the first 2 MW system will be commenced in the end of 2014.