Direct measurement of refracted trajectory of transmitting electron cyclotron beam through plasma on the Large Helical Device
Direct measurement of refracted trajectory of transmitting electron cyclotron beam through plasma on the Large Helical Device
复制标题
大型螺旋装置上等离子体发射电子回旋束折射轨迹的直接测量
DOI：
10.1051/epjconf/20158702019
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发表时间：
2015
影响因子：
--
通讯作者：
LHD実験グループ
中科院分区：
文献类型：
--
作者：
高橋裕己;久保伸;下妻隆;伊神弘恵;吉村泰夫;伊藤哲;小林策治;水野嘉識;岡田宏太;神尾修治;武藤敬;長壁正樹;長﨑百伸;Nikolai B. Marushchenko;Yuri Turkin;LHD実験グループ
在大螺旋装置中研究了等离子体对电子回旋束的折射。构建了透射- ec光束测量系统，利用红外相机测量了辐照面对面的光束方向图。观察到电子束折射率与电子密度有明显的相关性，电子束在环形方向上的位移与TRAVIS的射线迹计算结果吻合较好。讨论了外围密度分布和热效应对光束折射的影响。
The electron-cyclotron (EC) -beam refraction due to the presence of plasma was investigated in the Large Helical Device. The transmitted-EC-beam measurement system was constructed and the beam pattern on the opposite side of the irradiated surface was measured using an IR camera. Clear dependence of the EC-beam refraction on the electron density was observed and the beam shift in the toroidal direction showed good agreement with the ray-trace calculation of TRAVIS. The influence of the peripheral density profile and the thermal effect on the beam refraction were discussed.