[en] The heavy ion beam parameters of the initial part of the heavy ion collective accelerator (KUTI-20) are presented. It is shown that the use of special features of collective accelerator provides the performance of experiments in-not easily attainable earlier fields of heavy ion physics. The very short duration of the ion beam improves the efficiency of investigation of nuclear states with lifetimes tau >= 0.1 ns. The ring form of the beam and universality of the accelerator with respect to accelerated ions simplify the task of compound nuclei separation from a primary beam. The performance of mass-separator on the KUTI beam is considered in order to investigate nuclei for from the stability line. The acceleration of ions heavier than uranium and having a high charge creates the base for systematic investigation of ion-atom collisions and for the study of atomic systems with supercrytical charge