State of works on development of the heavy ion cyclotron complex in the JINR laboratory of nuclear reactions

The complex for acceleration of heavy ions from oxygen to uranium consisting of U-400 and U-400 M isochronous and cyclotrons for production of beams with 120 to 20 MeV pernucleon and intensities of 5x1012-1011 c sup(-1) is described. The U-400 cyclotron was commissioned in 1978 and is successfully used in nuclear-physics experiments. The U-400 M cyclotron is being constructed on the base of the existing U-300 electromagnet. In future ions accelerated in U-400 used as the injector must be extracted by electrostatic deflector and transported by ion-guide of 120 m length to U-400 m cyclotron