GSI / FAIR

The experimental setup for studies of reactions with relativistic radioactive beams R3B is part of the FAIR project. The aim of the R3B international collaboration is to develop and construct a versatile reaction setup with high efficiency, acceptance, and resolution for cinematically complete measurements of reactions with high-energy radioactive beams. The setup will be located at the focal plane of the high-energy branch of the Super-FRS. The experimental configuration is based on a concept like the existing R3B/LAND reaction setup at GSI introducing substantial improvement with respect to resolution and an extended detection scheme, which comprises the additional detection of light (target-like) recoil particles and a high-resolution fragment spectrometer. The setup is adapted to the highest beam energies (corresponding to 20 Tm magnetic rigidity) provided by the Super-FRS capitalizing on the highest possible transmission of secondary beams.

The R3B setup will cover experimental reaction studies with exotic nuclei far off stability, thus enabling a broad physics programme with rare-isotope beams with emphasis on nuclear structure and dynamics. Astrophysical aspects and technical applications are also concerned. To cover such a large physics programme several different detection subsystems as well as sophisticated DAQ system and data-analysis software are planned (see below). The work is performed inside the R3B collaboration which includes more than 50 different institutes from all over the world.