The Helmholtz-Zentrum Hereon conducts cutting-edge international research for a changing world: Around 1,100 employees contribute to the tackling of climate change, the sustainable use of the world's coastal systems and the resource-compatible enhancement of the quality of life. From fundamental research to practical applications, the interdisciplinary research spectrum covers a unique range.
The Institute of Materials Physics operates instruments on large-scale equipment for structural investigations of materials and works on the development and characterization of novel lightweight materials for high-temperature applications, for example in aircraft turbines and automotive engines. Hereon has a unique infrastructure for complementary materials research with photons and neutrons.
Reference code: 50061319_2 - 2021/WP 4
Commencement date: as soon as possible
Application deadline: June 13th, 2021
The place of employment is Hamburg.
The Helmholtz-Zentrum Hereon operates an outstation at the Deutsches Elektronen-Synchrotron (DESY) in Hamburg in order to provide access to highly brilliant synchrotron radiation within its German Engineering Materials Science Center (GEMS). At the PETRA III synchrotron radiation source, Hereon jointly operates the High Energy Materials Science Beamline (HEMS, P07), the Imaging Beamline (IBL, P05) and the Nanofocus end station of the Micro- and Nanofocus X-ray Scattering Beamline (MINAXS, P03) along with supporting laboratory instrumentation.
The tomography end stations at IBL and HEMS regularly produce large amounts of challenging 3D and 4D imaging data. For soft tissues or to enhance the intensity signal when the attenuation contrast is low, propagation-based or grating interferometric phase contrast imaging techniques are employed. In situ/operando/vivo experiments further impose severe constraints on scan times and X-ray dose. In order to enhance image quality, reduce artefacts, accelerate data acquisition and extend the employed techniques beyond current limitations, advanced phase retrieval methods will be implemented including algebraic, iterative, functional or learning-based approaches. Furthermore, we explore combined approaches for phase retrieval and tomographic reconstruction as well as strategies for the optimization of acquisition, processing and analysis of image data.
The advancement of equality at the Helmholtz-Zentrum Hereon goes without saying; in particular, we are striving to increase the percentage of women in the science sector.
Collaborative tasks include:
These qualifications are considered assets:
This PhD position is initially limited to 3 years. Informal enquiries can be directed to Dr. Julian Moosmann, email@example.com.
Then we are looking forward to receiving your comprehensive application documents indicating the reference number 2021/WP 4 including cover letter (short, concise, max. 1 page), CV, list of publications, letter of recommendation, copies/transripts of certificates including grades, proof of your English skills (TOEFL, IELTS or equivalent), and (link to) pdf file of your master thesis. The application must not exceed 10 MB.
The promotion of equal rights is a matter of course for us. Severely disabled persons and those equaling severely disabled persons who are equally suitable for the position will be considered preferentially within the framework of legal requirements.Læs mere
|Titel||PhD Student - Advanced phase retrieval methods for X-ray tomography|
|Job location||Notkestraße 85, 22607 Hamburg|
|Publiceret||maj 18, 2021|
|Ansøgningsfrist||juni 13, 2021|
|Områder||Algoritmer,   Eksperimentalfysik,   Programmeringssprog,   Softwareudvikling,   Anvendt fysik,   Big Data,   Machine Learning,   Billedbehandling  |