Design and simulation of ellipsoidal single-bounce mono-capillary condensers for a laboratory X-Ray nano-imaging...

X-ray nano-imaging enables nondestructive characterization at the nanoscale. However, limited by factors such as source brightness, divergence angle, and focal spot size, the development of laboratory X-ray nano-imaging systems still faces many challenges. The ellipsoidal single-bounce mono-capillary condenser (ESMCC), as an efficient X-ray focusing optic, is a core basic component of synchrotron-based nano-imaging. It is also a key to optimizing the illumination capacity of laboratory sources and achieving laboratory high-resolution nano-imaging. According to the characteristics of the laboratory nanoimaging system, the ESMCC geometric parameter model is established. With the six evaluation metrics affecting imaging quality and focusing performance as the primary design basis, a fast and effective ESMCC design method is proposed, which can be applied to the front-end illumination systems of full-field transmission X-ray micrography (TXM) and ptychography through numerical calculations and comprehensive analyses. Further, the design of the ESMCC is validated by simulation experiments using XRayTracer (XRT) simulation software. The simulation experiment results show high consistency with the theoretical design, verifying the rationality of the design method and providing a feasible approach for efficient focusing optical path design in laboratory X-ray nano-imaging.