Measurement of Radiated Power Loss on EAST
Measurement of Radiated Power Loss on EAST
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DOI：
10.1088/1009-0630/13/5/07
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发表时间：
2011-10
影响因子：
1.7
通讯作者：
Y. Duan;Liqun Hu;S. Mao;P. Xu;Kaiyun Chen;Shiyao Lin;G. Zhong;J. Zhang;Ling Zhang;
中科院分区：
文献类型：
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作者：
Y. Duan;Liqun Hu;S. Mao;P. Xu;Kaiyun Chen;Shiyao Lin;G. Zhong;J. Zhang;Ling Zhang;
一种被称为AXUV(绝对极紫外)光电二极管的硅探测器被成功地用于测量EAST的辐射功率。该探测器具有结构紧凑、快速的时间响应(<0.5 S)和平坦的紫外-X射线光谱灵敏度的特点。在EAST上安装了两个16通道的AXUV阵列，以观察等离子体的全极向截面。基于该诊断系统，给出了限幅器等离子体和偏滤器等离子体的典型辐射分布，并进行了比较。随着偏滤器脱落的发生，X点区的辐射分布发生了明显的变化。简要分析了不同等离子体参数下放电的总辐射功率损失。
A type of silicon detector known as AXUV (absolute extreme ultraviolet) photodiodes is successfully used to measure the radiated power in EAST. The detector is characterized by compact structure, fast temporal response (<0.5 s) and flat spectral sensitivity in the range from ultra-violet to X-ray. Two 16-channel AXUV arrays are installed in EAST to view the whole poloidal cross-section of plasma. Based on the diagnostic system, typical radiation distributions for both limiter and divertor plasma are obtained and compared. As divertor detachment occurs, the radiation distribution in X-point region is observed to vary distinctly. The total radiation power losses in discharges with different plasma parameters are briefly analyzed.