GSI Helmholtzzentrum für Schwerionenforschung

GSI Helmholtzzentrum für Schwerionenforschung operates a unique accelerator for heavy ions. Researchers from around the world use this facility for experiments that help them make fascinating discoveries in basic research. In addition, they continually develop new and impressive applications.

The Scientific Managing Director of GSI and FAIR, Professor Thomas Nilsson.
The renowned Swedish experimental physicist Professor Thomas Nilsson took up the position of the Scientific Managing Director at the GSI Helmholtzzentrum für Schwerionenforschung GmbH and the Facility for Antiproton and Ion Research in Europe (FAIR) GmbH on December 1, 2024. With his comprehensive experience and internationally recognized expertise, Professor Thomas Nilsson will play a leading role in shaping the scientific development of the research facility and the international accelerator…



Annual calendar 2025
The popular annual calendar from GSI and FAIR is available again! As usual, the large DIN-A2-sized calendar offers a clear overview of all public holidays and school vacations as well as plenty of space for personal notes. With attractive pictures of GSI and FAIR, it is a practical planner for the whole year.



FAIR – the future accelerator facility

In the next few years the new international accelerator facility FAIR, one of the largest research projects worldwide, will be erected at GSI. At FAIR an unprecedented variety of experiments will be possible. Thereby physicists from all around the world will be able to gain new insights into the structure of matter and the evolution of the universe from the Big Bang to the present.
Learn more about FAIR: GSI about FAIR or FAIR web page

Cancer Treatment with Ion Beams

GSI is the birthplace of a new form of cancer treatment. This development was the result of many years of research in conjunction with GSI’s large ion-beam accelerator system. The advantage of this new treatment modality is that the ion beam selectively damages tumor tissues while sparing the surrounding healthy tissues. More...

The Creation of New Elements

Chemical elements are produced in stars and stellar explosions. Elements are the building blocks of all materials that surround us – including every atom of our bodies. The universe is also home to a large number of atoms that do not occur on earth. One of the key tasks of the researchers at GSI is to attempt to create previously unknown elements. More...


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