First ptychographic X-ray computed tomography experiment on the NanoMAX beamline.

Maik Kahnt,Sebastian Kalbfleisch,Karina Thånell,Filip Lenrick,Alexander Björling,Ulf Johansson,James H Pikul,Simone Sala,Zhimin Jiang

doi:10.1107/s160057672001211x

Maik Kahnt, Sebastian Kalbfleisch + Show 7 more

Open Access

https://doi.org/10.1107/s160057672001211x

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Abstract

Ptychographic X-ray computed tomography is a quantitative three-dimensional imaging technique offered to users of multiple synchrotron radiation sources. Its dependence on the coherent fraction of the available X-ray beam makes it perfectly suited to diffraction-limited storage rings. Although MAX IV is the first, and so far only, operating fourth-generation synchrotron light source, none of its experimental stations is currently set up to offer this technique to its users. The first ptychographic X-ray computed tomography experiment has therefore been performed on the NanoMAX beamline. From the results, information was gained about the current limitations of the experimental setup and where attention should be focused for improvement. The extracted parameters in terms of scanning speed, size of the imaged volume and achieved resolutions should provide a baseline for future users designing nano-tomography experiments on the NanoMAX beamline.

Highlights

Ptychographic X-ray computed tomography (PXCT) is a well established coherent imaging technique used at multiple synchrotron radiation sources (Pfeiffer, 2018; Holler et al, 2017; Silva et al, 2017; Shapiro et al, 2017; Sala et al, 2019; Kahnt et al, 2019)
The experiment presented here was an important step towards offering PXCT as a standard method to users of the NanoMAX beamline
The post-processing of the recorded data was the same as for a PXCT experiment where the sample was physically centred

Summary

Introduction

Ptychographic X-ray computed tomography (PXCT) is a well established coherent imaging technique used at multiple synchrotron radiation sources (Pfeiffer, 2018; Holler et al, 2017; Silva et al, 2017; Shapiro et al, 2017; Sala et al, 2019; Kahnt et al, 2019). By reconstructing the measured data, we evaluated the current PXCT capabilities on the NanoMAX beamline and identified which difficulties have to be overcome before this technique can be offered to users Using those results, we outline the parameters that will be required for PXCT experiments when using recently acquired hardware and utilizing the full coherent beam of the MAX IV synchrotron light source

Results

Discussion

Conclusion