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.

25 years of tumor therapy: Precise weapons in the fight against cancer
Therapy – Treatment Facility at GSI.
It was the starting point of a success story and is an outstanding example of successful technology transfer: 25 years ago, clinical studies of an innovative cancer treatment using accelerated carbon ions started at GSI Helmholtzzentrum für Schwerionenforschung. In August and September 1998, the first patients were treated with a complete course of carbon therapy for a period of three weeks. In the following years, the path led from fundamental research to a widespread medical application ...
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Dr. Ralph Aßmann heads accelerator operation and development at GSI/FAIR
Dr. Ralph Aßmann
GSI/FAIR's business area “Accelerator Operations & Development (ACC)” has a new head: Dr. Ralph Aßmann took over the position on September 1, 2023, and will in future manage GSI's existing accelerator facilities and plan the integration and commissioning of FAIR.
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“An unmissable opportunity” — GSI/FAIR Summer Student Program
The Summer Students visit the FAIR viewpoint
33 students from 20 countries participated in this year’s Summer Student Program at GSI and FAIR. They spent eight weeks on campus, learning about experiments and research fields of GSI and FAIR and experiencing the atmosphere at an international accelerator laboratory.
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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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