Fragment Separator
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The GSI Fragment Separator or FRS is a facility built in 1990 at GSI near Darmstadt, Germany. It produces and separates different beams of (usually) radioactive ions.
The process is made from a stable beam accelerated by UNILAC and then SIS impinging on a production target. From this a lot of fragments are produced. And the secondary beam is produced by a selection on the magnetic rigidity of the ions. This selection is made by a chain of magnets (mainly dipoles and quadrupoles).