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Design and optimization of a soft X-ray tomography system on Keda Torus experiment

机译:KEDA TORUS实验软X射线断层扫描系统的设计与优化

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摘要

We report about the soft X-ray (SXR) tomography system which is being developed on Keda Torus eXperiment (KTX). The tomographic system aims at studying three dimensional effects in reversed field pinch with high plasma current, particularly in quasi-single-helicity state (QSH). The view distribution of the probes has been carefully designed to reflect the experimental constraints. Bayesian experimental design (BED) is used to opti-mize the signal camera location and camera opening angle, aiming at maximizing the gain information in future QSH states. The BED approach allows us to quantitatively evaluate the performance of the design, and to esti-mate the design robustness. The physical image of the plasma is tomographically reconstructed using Cormack approach and the reconstructed emissivity image may be compared to the emissivity model using the residual error ?. The camera location, camera opening angle, and sightline density are finally decided by quantitatively comparing diverse designs in order to achieve the best reconstruction.
机译:我们报告了在KEDA Torus实验(KTX)上开发的软X射线(SXR)断层扫描系统。断层系统旨在研究具有高等离子体电流的逆转场夹的三维效应,特别是在准单螺旋状态(QSH)中。探头的视图分布已经精心设计以反映实验约束。贝叶斯实验设计(床)用于光学信号摄像机位置和相机打开角度,旨在最大化未来QSH状态的增益信息。床方法使我们能够定量评估设计的性能,以及设计稳健性的性能。等离子体的物理图像采用CORMACK方法突出地重建,并且可以使用残差误差将重建的发射率图像与发射率模型进行比较?。通过定量比较多样化的设计,最终决定相机位置,相机打开角度和视线密度,以实现最佳的重建。

著录项

  • 来源
    《Fusion Engineering and Design》 |2021年第3期|112174.1-112174.7|共7页
  • 作者单位

    Univ Sci & Technol China Hefei 230026 Anhui Peoples R China;

    Univ Sci & Technol China Hefei 230026 Anhui Peoples R China;

    Univ Sci & Technol China Hefei 230026 Anhui Peoples R China;

    Univ Sci & Technol China Hefei 230026 Anhui Peoples R China|Univ Calif Los Angeles Los Angeles CA 90095 USA;

    Univ Sci & Technol China Hefei 230026 Anhui Peoples R China;

    Univ Sci & Technol China Hefei 230026 Anhui Peoples R China;

    Univ Sci & Technol China Hefei 230026 Anhui Peoples R China;

    Univ Sci & Technol China Hefei 230026 Anhui Peoples R China;

    Univ Sci & Technol China Hefei 230026 Anhui Peoples R China;

    Univ Sci & Technol China Hefei 230026 Anhui Peoples R China;

    Univ Sci & Technol China Hefei 230026 Anhui Peoples R China;

    Chinese Acad Sci Inst Plasma Phys Hefei 230031 Peoples R China;

    Univ Sci & Technol China Hefei 230026 Anhui Peoples R China;

    Univ Sci & Technol China Hefei 230026 Anhui Peoples R China;

    Univ Sci & Technol China Hefei 230026 Anhui Peoples R China;

    Univ Sci & Technol China Hefei 230026 Anhui Peoples R China;

    Univ Sci & Technol China Hefei 230026 Anhui Peoples R China|Chinese Acad Sci Inst Plasma Phys Hefei 230031 Peoples R China|Univ Saskatchewan Plasma Phys Lab Saskatoon SK S7N 5E2 Canada;

    Univ Sci & Technol China Hefei 230026 Anhui Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Quasi-single-helicity; Soft X-ray; Bayesian experimental design; Tomographic reconstructions;

    机译:准单螺旋;软X射线;贝叶斯实验设计;断层切断重建;

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