Spatially resolved spectra from a new x-ray imaging crystal spectrometer for measurements of ion and electron temperature profiles (invited)
Spatially resolved spectra from a new x-ray imaging crystal spectrometer for measurements of ion and electron temperature profiles (invited)
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DOI：
10.1063/1.1791747
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发表时间：
2004-10
影响因子：
1.6
通讯作者：
M. Bitter;K. Hill;B. Stratton;A. Roquemore;D. Mastrovito;S. G. Lee;J. Bak;M. Moon;U. Nam
中科院分区：
文献类型：
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作者：
M. Bitter;K. Hill;B. Stratton;A. Roquemore;D. Mastrovito;S. G. Lee;J. Bak;M. Moon;U. Nam
一种新型的高分辨率x射线成像晶体谱仪正在研制中，用于测量托卡马克等离子体中的离子和电子温度分布。该仪器对于诊断纯欧姆加热和射频加热的等离子体特别有价值，因为它不需要注入中性束，尽管它也可以用于诊断中性束加热的等离子体。光谱仪由球形弯曲石英晶体和二维位置灵敏探测器组成。它记录了从多个视线通过等离子体的氦类氩（或氪）的光谱，并将大等离子体横截面的缩小图像投影到检测器上。等离子体中的空间分辨率仅由晶体的高度、其曲率半径和布拉格角决定。这种新的X射线成像晶体光谱仪也可能对未来大型托卡马克中离子温度分布的诊断感兴趣，韩国超导托卡马克高级研究tok。
A new type of high-resolution x-ray imaging crystal spectrometer is being developed to measure ion and electron temperature profiles in tokamak plasmas. The instrument is particularly valuable for diagnosing plasmas with purely ohmic heating and rf heating, since it does not require the injection of a neutral beam—although it can also be used for the diagnosis of neutral-beam heated plasmas. The spectrometer consists of a spherically bent quartz crystal and a two-dimensional position-sensitive detector. It records spectra of helium-like argon (or krypton) from multiple sightlines through the plasma and projects a de-magnified image of a large plasma cross section onto the detector. The spatial resolution in the plasma is solely determined by the height of the crystal, its radius of curvature, and the Bragg angle. This new x-ray imaging crystal spectrometer may also be of interest for the diagnosis of ion temperature profiles in future large tokamaks, the Korea Superconducting Tokamak Advanced Research tok...