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 optimize 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 estimate 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 χ. The camera location, camera opening angle, and sightline density are finally decided by quantitatively comparing diverse designs in order to achieve the best reconstruction.

我们报告有关在Keda Torus eXperiment（KTX）上开发的软X射线（SXR）层析成像系统的信息。层析成像系统旨在研究高等离子体电流在反向场收缩中的三维效应，尤其是在准单螺旋状态（QSH）中。探针的视图分布经过精心设计以反映实验约束。贝叶斯实验设计（BED）用于优化信号摄像机的位置和摄像机的张开角度，旨在最大化未来QSH状态下的增益信息。BED方法使我们能够定量评估设计的性能，并估计设计的稳健性。χ。通过定量比较各种设计最终确定最佳位置，最终确定摄像机的位置，摄像机的打开角度和视线密度。