Abstract
Different approaches of 2D lens arrays as Shack-Hartmann sensors for hard X-rays are compared. For the first time, a combination of Shack-Hartmann sensors for hard X-rays (SHSX) with a super-resolution imaging approach to perform multi-contrast imaging is demonstrated. A diamond lens is employed as a well known test object. The interleaving approach has great potential to overcome the 2D lens array limitation given by the two-photon polymerization lithography. Finally, the radiation damage induced by continuous exposure of an SHSX prototype with a white beam was studied showing a good performance of several hours. The shape modification and influence in the final image quality are presented.
Highlights
Over the years, sensing wavefront deformations after passing through an object has become of great importance in imaging for many medical and industrial applications
Characterization of produced arrays consider the overall influence of the lens shape, and present All X-ray characterization experiments were carried out at the a way to overcome the former limitations of the 3D DLW TOPO-TOMO beamline of the KARA synchrotron facility technology to increase the sensor field-of-view (FoV)
A further explanation can originate in the observation that the voxel of the laser used for 3D-DLW does not have spherical symmetry, which results in a difference of lens shapes in the parallel and perpendicular directions to the printing plane
Summary
Over the years, sensing wavefront deformations after passing through an object has become of great importance in imaging for many medical and industrial applications. In this way, several multi-contrast imaging techniques using hard X-rays have emerged in recent decades employing synchrotron and laboratory sources (Wilkins et al, 2014). SHSX design based on continuous hollow cylindrical (KARA, KIT, Karlsruhe, Germany), shows the potential of lenses sample-shift multi-contrast X-ray imaging. Design evolution and manufacturing of the interception of two perpendicular cylinders is forming a single
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