Post-doctoral Researcher in the “Medical Physics Group” (all genders)

GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt operates one of the leading particle accelerators for science. In the next few years, the new FAIR (Facility for Antiproton and Ion Research) one of the world’s largest research projects, will be built in international cooperation. GSI and FAIR offer the opportunity to work together in this international environment with a team of employees committed to ensure each day to conduct world-class science.


The Biophysics department is an interdisciplinary collaboration of biologists, physicists, chemists, biochemists and technicians. The multidisciplinary research in our group covers a wide range of topics from radiobiology, radiation physics and space research to radiation therapy.


The Medical Physics Group within the Biophysics department deals with advanced treatment planning and delivery research for ion beam therapy. In particular, the group investigates precision therapy for mobile tumors in organs of the thorax and abdomen, but also for non-cancer diseases such as cardiac arrhythmia. The developed strategies are experimentally validated in Cave M and in collaboration with clinical partners. More details can be found on the group website:


The GSI biophysics group is looking for a


Post-doctoral Researcher in the “Medical Physics Group” (all genders)

Posting-ID: 21.154-1510



starting as soon as possible.


Heavy ion therapy permits highly precise therapy of cancer and non-cancer diseases, delivering dose to the target while sparing surrounding tissue. To achieve this precision under realistic, uncertain conditions requires complex measures to ensure the robustness of treatment planning and delivery, especially in the presence of target motion such as in lung cancer. Treatment planning in heavy ion therapy is based on simulating the physical process of the interaction between beam and target. Analytical approaches such as pencil beam algorithms make this process tractable but have known deficiencies compared to computationally expensive Monte Carlo simulation. The researcher will use AI-strategies to improve analytical treatment planning by training against Monte Carlo, especially in complex anatomical situations such as the lung.


We are looking for a postdoctoral researcher (all genders) with a solid background in artificial intelligence, preferentially in medical applications such as image processing or related areas.


Your Tasks:


  • Implement an AI-framework enabling training and testing of different strategies
  • Implement found AI-driven modifications to the dose engine in our treatment planning software TRiP98
  • Scientific dissemination and publication
  • Support other members of the group in AI-related projects, both conceptual and in the implementation.


Your Qualification:


  • PhD in Physics, Engineering, Informatics or comparable
  • Experience and a published track record in the field of artificial intelligence
  • Skills in programming, preferentially C++ and python
  • Experience in Monte Carlo simulations is helpful but not necessary
  • A background in radiotherapy or medical imaging is helpful but not necessary.


We offer an innovative, interdisciplinary and excellently equipped research group that is world leading in several fields of research. The position is initially limited for two years.


The salary is based on the German civil service employees (Tarifvertrag für den öffentlichen Dienst - TVöD (Bund)).


GSI supports the vocational development of women. Therefore, women are especially encouraged to apply for the position.


Severely handicapped persons will be preferentially considered when equally qualified.


For further information, please contact Dr. Christian Graeff (Tel +49 (0)6159 71 1848 or email c.graeff(at)


Further information about FAIR and GSI is available at and


If you find this position interesting, please send your full application documents, including the desired salary, with information of your earliest possible starting date and the Posting-ID: 21.154-1510 to the following address by February, 04th 2022 to bewerbung(at)


or postal delivery:


GSI Helmholtzzentrum für Schwerionenforschung GmbH

Abteilung Personal

Planckstraße 1

64291 Darmstadt




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