Separation of projectile fragments at the fragment separator of GSI — First experimental results☆

A complete identification in mass and nuclear charge for relativistic projectile fragments up to uranium is possible at the fragment separator (FRS) at GSI by using the scintillation detector equipment described in this paper. It was successfully used in experiments with primary beams ranging from oxygen to uranium with energies from 300 to 1000 A MeV.

A mass-resolving power of A/ΔA = 407 (FWHM) was obtained for 0.95 A GeV ²³⁸U fragments.