The Deutsches Elektronen-Synchrotron (DESY) in Hamburg, Germany, is offering two PhD positions focused on the development of hierarchical X-ray imaging methods at synchrotron facilities. The research integrates computational imaging, X-ray nanoscience, and data science to pioneer new tomography techniques for multi-scale material and biological analysis. The projects are part of the ErUM-Data Project CmarT and aim to advance local adaptive tomography (LAT), a novel imaging approach that merges data across length scales to reveal hierarchical sample structures. PhD candidates will work within the X-Ray Nanoscience & X-Ray Optics Group and the Computational Imaging Group, collaborating closely with beamline scientists at PETRA III. Responsibilities include developing advanced physical models for holographic X-ray image formation, designing and implementing multi-scale reconstruction algorithms, analyzing hierarchical materials and biological samples, and publishing research results. Applicants must have a Master’s degree in Physics, Mathematics, Computer Science, or a related field, with strong skills in tomography, imaging physics, or computational modeling, and proficiency in programming. The position offers a salary at 75% of the TVöD E13 pay grade, secure public-sector employment, and access to world-class facilities and training. The doctoral degree will be granted by the University of Hamburg. Applications are accepted until the positions are filled.

DESY, one of the world's leading research centers, is offering two PhD positions in Hamburg focused on the development of novel multi-scale X-ray imaging methods at synchrotron radiation facilities, particularly PETRA III. The research aims to address the challenge of imaging hierarchically structured samples—common in both biological and materials science contexts—by developing and implementing a local adaptive tomography (LAT) scheme. This approach will enable efficient measurement and reconstruction of samples by integrating features at different length scales into a single reconstruction volume, overcoming the limitations of scanning entire samples at the highest resolution. The projects are embedded within the ErUM data project CmarT and are hosted in the 'X-Ray Nanoscience and X-Ray Optics' and 'Computational Imaging' groups. Key responsibilities include developing improved physical models for holographic X-ray image formation, designing and implementing reconstruction algorithms for large-scale tomographic data, and collaborating with beamline scientists to validate and optimize the LAT scheme. Applicants should have a Master's degree in Physics, Mathematics, Computer Science, or a related field, and be eager to engage with topics at the intersection of algorithm development, high-performance computing, and experimental science. Strong problem-solving abilities, teamwork, programming skills, and proficiency in English or German are required. The positions offer a unique international research environment, flexible working hours, family-friendly policies, and comprehensive training and development opportunities. PhD students are employed with a monthly salary at 75% of the remuneration group 13 TVöD (Federal Government), with additional benefits such as a supplement for the Deutschland-Ticket. While DESY does not grant doctoral degrees directly, it collaborates with the University of Hamburg, and candidates must meet the university's doctoral admission requirements. Applications should include a letter of motivation, CV, certificates, and two reference letters, submitted via the DESY application portal. The positions are open until filled, and women and individuals with disabilities are especially encouraged to apply. For further information, contact Dr. Johannes Hagemann or Professor Martin Burger.