EAST装置上ERD光谱诊断系统设计  

Design of ERD diagnostic system on EAST tokamak

作　　者：李颖颖[1] 尹相辉[2] 张镱[2] 冯双圆 符佳[1] 吕波[1] 

机构地区：[1]中国科学院等离子体物理研究所,合肥230031 [2]中国科学技术大学核科学技术学院,合肥230026

出　　处：《核聚变与等离子体物理》2015年第4期302-307,共6页Nuclear Fusion and Plasma Physics

基　　金：国家自然科学基金(11405212;11175208);国家磁约束核聚变能发展研究专项资助项目(2013GB112004;2012GB101001)

摘　　要：在EAST装置上研制了一套边界旋转测量系统（ERD）用于测量边界等离子体环向/极向旋转速度和离子温度分布。前置收光系统采用了嵌入式（plug-in）结构，便于系统调试与维护。光谱仪设计成多入射狭缝结构，可容纳更多的光纤，提高了其利用率。探测器选用了高灵敏度和高动态范围的电子倍增 CCD（EMCCD）探测器。使用了含高OH基浓度的石英光纤，可以承受一定剂量的中子辐射。系统设计的测量波段为350~800nm，最高时间分辨为15ms，空间分辨为1cm。低杂波注入下的实验结果与早期 EAST 上二维弯晶谱仪与快速往复探针联合实验的结论一致。A new edge rotation diagnostic system （ERD） was developed to measure the edge plasma rotation velocities and ion temperature profiles toroidally and poloidally. The collective optics adopts the ‘plug-in’ concept and is very flexible for additional system adjustment and maintenance after installation. For the spectrometer, a multi-slit entrance is used to effectively improve the capacity of the spectrometer and accommodate more optical fibers. A back-illuminated EMCCD is adopted as the photon detector for its high sensitivity and wide dynamic range.The high OH-radical concentration fused silica fibers are adopted to resist the neutron radiation. The system is in the visible wavelength range （350~800nm）, the achieved temporal and spatial resolution is 15ms and 1cm respectively. Experimental results during the LHW phase are consistent with the collaborative experimental results from the XCS and fast reciprocating probe.

关 键 词：EAST装置 ERD诊断 离子温度 旋转速度 

分 类 号：TL651[核科学技术—核技术及应用]