Space-resolved VUV spectroscopy using the 3 m normal incidence spectrometer with back-illuminated CCD detector in the LHD
Space-resolved VUV spectroscopy using the 3 m normal incidence spectrometer with back-illuminated CCD detector in the LHD
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DOI：
10.1063/1.1535252
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发表时间：
2003-03
影响因子：
1.6
通讯作者：
S. Morita;M. Goto
中科院分区：
文献类型：
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作者：
S. Morita;M. Goto
在大螺旋装置（LHD）中，利用3 m法入射光谱仪建立了空间分辨VUV （300-3100 A）光谱，用于研究边缘等离子体。在光谱仪的入口狭缝和光栅之间水平放置一个空间分辨狭缝，从而获得径向（垂直）剖面。利用放置在入口狭缝前方的圆柱形反射镜，将垂直图像放大5倍，将LHD等离子体的完整垂直分布投射到背光CCD探测器上。在单次放电时，可以通过扫描垂直放置在光谱仪和LHD之间的环形狭缝来测量二维分布。最近，成功地获得了第一个结果。给出了离子温度的垂直分布和时间行为的一些例子，并对仪器进行了描述。不幸的是，由于CCD在室温下工作的数据包含了很多的数据，因此无法测量极向旋转。
Space-resolved VUV (300–3100 A) spectroscopy using the 3 m normal incidence spectrometer has been developed for the study of edge plasmas in the Large Helical Device (LHD). The radial (vertical) profile is obtained with a space-resolved slit placed horizontally between the entrance slit and the grating of the spectrometer. Using a cylindrical mirror placed in the front of the entrance slit, which magnifies the vertical image five times, a full vertical distribution of the LHD plasma is projected on the back-illuminated CCD detector. The two-dimensional distribution can be measured by scanning a toroidal slit placed vertically between the spectrometer and LHD during a single discharge. Recently, first results were successfully obtained. Some examples of the vertical profile and temporal behaviors of the ion temperature are presented with a description of the instrumentation. Unfortunately, the poloidal rotation could not be measured, because the data from the CCD operated in room temperature included a lot...