Rare isotope accumulation and deceleration in the NESR storage ring of the fair project

Production of rare isotope beams is one of the most important tasks of the accelerators of the FAIR project. The rare isotope beams can be stored in the NESR storage ring where powerful electron allows high precision experiments. Various modes for experiments are foreseen, interaction with internal targets, collisions with counter- propagating electrons or antiprotons, deceleration of the ions from the injection energy of 740 MeV/u to a minimum energy of 4 MeV/u and mass measurements by Schottky noise detection. If the intensity of single shots of rare isotopes is too low, a longitudinal accumulation scheme in combination with electron cooling allows accumulation of intense rare isotope beams.