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.

Mourning for Hans Geissel
Hans Geissel
GSI and FAIR mourn the loss of Prof. Dr. Dr. h.c. Hans Geissel * 13.5.1950  † 29.4.2024 who passed away at the age of 73. Hans Geissel was an enthusiastic scientist and gifted experimental physicist, a continuous source of new research ideas, involved in many groundbreaking discoveries in the field of exotic nuclei and other areas of research,awarded numerous scientific prizes and honors, professor at the Justus-Liebig-University Giessen and honorary doctor of Chalmers University in…
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Novel space charge compensation – Simulations at GSI/FAIR highlight new technique for the enhancement of ion beam intensities in synchrotrons
The interiour of the ring accelerator SIS18
A new comprehensive simulation study led by GSI/FAIR scientists demonstrates the potential of pulsed electron lenses to significantly increase the highest achievable intensities of heavy-ion beam ring accelerators. This novel space-charge compensation technique is pioneered at GSI/FAIR, where also a prototype is under development. The study, published in Physical Review Letters, paves the way to overcome the so-called space charge limit in ion synchrotrons.
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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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