Initial operation of the national spherical torus experiment fast tangential soft x-ray camera
Initial operation of the national spherical torus experiment fast tangential soft x-ray camera
复制标题
国家球面环面实验快速切向软X射线相机首次运行
DOI：
10.1063/1.1787930
复制
发表时间：
2004
影响因子：
1.6
通讯作者：
J. Lowrance
中科院分区：
文献类型：
--
作者：
B. Stratton;R. Feder;S. Goeler;G. Renda;V. Mastrocola;J. Lowrance
快速二维软x射线成像技术是研究托卡马克等离子体磁流体动力学不稳定性的有力手段。我们已经构建了一个超快帧频软X射线相机的国家球形环实验（NSTX）。它基于最近开发的64×64像素电荷耦合器件（CCD）相机，能够以每秒500 000帧的速度捕获300帧。针孔孔径图像的等离子体软X射线发射（0.2-10千电子伏）上的P47闪烁体沉积在光纤面板;闪烁体可见光输出检测和放大的缩小图像增强器和镜头耦合到CCD芯片。 铍箔的选择提供了低能量发射的歧视。该系统安装在NSTX上，具有等离子体的广角切向视图。初始等离子体数据和系统性能的评估。
Fast, two-dimensional, soft x-ray imaging is a powerful technique for the study of magnetohydrodynamic instabilities in tokamak plasmas. We have constructed an ultra-fast frame rate soft x-ray camera for the national spherical torus experiment (NSTX). It is based on a recently developed 64×64 pixel charge-coupled device (CCD) camera capable of capturing 300 frames at up to 500 000 frames per second. A pinhole aperture images the plasma soft x-ray emission (0.2–10 keV) onto a P47 scintillator deposited on a fiber-optic faceplate; the scintillator visible light output is detected and amplified by a demagnifying image intensifier and lens-coupled to the CCD chip. A selection of beryllium foils provides discrimination of low-energy emission. The system is installed on NSTX with a wide-angle tangential view of the plasma. Initial plasma data and an assessment of the system performance are presented.