[en] Description of the complex of three charged particle accelerators the beams of which are aligned on the target is presented. The complex gives the possibility of simultaneous irradiation of materials by the beams of heavy ions for damage production on the level 1...200 displacements per atom and also by helium and hydrogen ions for investigation of the influence of these gases accumulation on damage development and change of structural materials physical-mechanical properties. Beside the irradiation the complex allows measurement of space-concentration distribution of implanted gaseous impurities and investigation of their evolution under irradiation and annealing by nuclear-physical methods.