Research on the design and characteristics of multi-grating modulation screen for tabletop X-ray system

This dataset originates from simulation-based design research of a multi-grating modulation screen for Fourier-transform ghost imaging (FGI), primarily used to analyze the modulation effects of X-ray multi-beam configurations under various parameter settings. Numerical simulations were conducted to model the first-order diffraction of X-rays through multiple sub-gratings, evaluating the influence of sub-grating size, thickness, material, and arrangement on the focal spot size, uniformity, and diffraction efficiency. The simulations are based on Fresnel diffraction theory and implemented using MATLAB.