Speaker
Description
Wave-optical simulation of undulator radiation through X-ray beamlines is computationally prohibitive, limiting real-time optimization. The high-frequency diffraction structures and extreme dynamic range of focal spot distributions pose significant challenges to conventional surrogate models. We propose a log-manifold surrogate modeling framework that represents intensity distributions in logarithmic space, converting highly nonlinear diffraction structures into low-rank learnable manifolds. With physics-informed OOD-aware Residual method, the model attains less than 1% relative error over the full dynamic range, faithfully reconstructs fine diffraction fringes, and generalizes robustly across beamline configurations. Single prediction takes only milliseconds, yielding thousands of speedup over SRW simulation and enabling real-time surrogate-based beamline optimization. This work demonstrates an efficient path toward real-time digital-twin beamline modeling for fourth-generation light sources, enabling online optimization, rapid parameter scans, and virtual diagnostics.
Footnotes
This work is supported by the Tsinghua SSMB program; the SSMB mechanism was demonstrated in Nature 590, 576 (2021).
Funding Agency
This work is supported by the National Natural Science Foundation of China (No.124B2109)
| In which format do you inted to submit your paper? | LaTeX |
|---|---|
| Preprint marking on your proceeding paper | I do not wish my paper to be marked as preprint. |