The new accelerator facility FAIR is under construction at GSI. Learn more.


GSI is member of


Funded by




18.03.2014 | Concrete work for CRYRING@ESR completed

Foto: M. Lestinsky, GSI Helmholtzzentrum für Schwerionenforschung



The completion of the shell construction for the FAIR accelerator CRYRING@ESR has been celebrated with a roofing ceremony on March 14, 2014. The former FOPI cave in the GSI experimental area has been remodelled to house the ring in the earlier months. The concrete work is now finished. The civil work is carried out by the specialist departments of the division FAIR@GSI together with the GSI plant and facility engineering. The CRYRING@ESR project team from atomic physics and decelerators is aided with CRYRING expertise by Mats Engström and his colleagues of the University of Stockholm in Sweden. Further planning and preparatory work is also carried out by colleagues from the University of Krakow, the Helmholtz Institute Jena and the Kernfysisch Versneller Instituut (KVI) in Groningen.

"The departments have done a good job with the remodelling", thanked head of the project Frank Herfurth at the roofing ceremony. "We are looking forward to continuing the work and inserting the ring components into the area soon." In the reconstruction 2 000 tons of concrete have been moved. The experimental area has been increased to a size of 600 square meters. Before mounting the ring the electric installations and other infrastructure features have to be completed. On the rooftop an additional floor will be mounted to position the power supplies.

The so called CRYRING is a contribution of Sweden to FAIR that has been delivered from the Manne-Siegbahn-Laboratory in Stockholm to GSI in 2013. It has a diameter of 18 meters and will initially be assembled in cooperation with GSI for experiments and machine tests at the existing GSI accelerator facility. Among other things the control system for FAIR can be tested with CRYRING. In the long-term it is planned to use it for atomic physics experiments with slow antiprotons at FAIR.

The concrete work has been completed. The green beamline shows where CRYRING will be positioned in the future.
Foto: M. Lestinsky, GSI Helmholtzzentrum für Schwerionenforschung