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FLAIR – a facility for low-energy antiproton and ion research


In order to exploit the unique possibilities that will become available at the Facility for Antiproton and Ion Research (FAIR) at GSI in Darmstadt, a collaboration of about 50 institutes from 15 countries was formed to efficiently enable an innovative research program towards low-energy antimatter-physics. In the Facility for Low-energy Antiproton and Ion Research (FLAIR) antiprotons and heavy (radioactive) ions are slowed down from 30 MeV to energies as low as 20 keV by a magnetic low-energy storage ring (LSR) and an electrostatic ultra-low energy storage ring (USR) or are even brought to rest by a universal trap facility (HITRAP). In this paper, the facility and the research program covered are briefly described with some emphasis on the accelerator chain and the expected particle numbers.

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Correspondence to Carsten P. Welsch.

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for the FLAIR collaboration

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Welsch, C.P., Ullrich, J. FLAIR – a facility for low-energy antiproton and ion research. Hyperfine Interact 172, 71–80 (2006).

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  • Low-energy antiprotons
  • Storage rings
  • Collision dynamics
  • Reaction microscope