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Soft X-Ray Imaging Design and Analysis Methods on DIII-D

机译:DIII-D的软X射线成像设计和分析方法

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A new tangential 2D Soft X-Ray Imaging System (SXRIS) is being designed to examine the edge magnetic island structure in the lower X-point region of DIII-D. A synthetic diagnostic calculation coupled to 3D emissivity estimates is used to generate phantom images. Phillips-Tikhonov regularization is used to invert the phantom images for comparison to the original emissivity model. Noise level, island size, and equilibrium accuracy are scanned to assess the feasibility of detecting edge island structures. Models of typical DIII-D discharges indicate integration times > 1 ms with accurate equilibrium reconstruction are needed for small island (< 3 cm) detection.
机译:正在设计一种新的切向二维软X射线成像系统(SXRIS),以检查DIII-D较低X点区域中的边缘磁岛结构。结合3D发射率估计值的综合诊断计算用于生成幻像图像。 Phillips-Tikhonov正则化用于反转幻像图像,以便与原始发射率模型进行比较。扫描噪声水平,孤岛大小和平衡精度,以评估检测边缘孤岛结构的可行性。典型的DIII-D放电模型表明,小岛(<3 cm)检测需要积分时间> 1 ms和精确的平衡重建。

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