DEVELOPMENT OF THE NICA INJECTION FACILITY

The new accelerator complex Nuclotron-based Ion Collider fAcility (NICA) is assumed to operate using two injectors: the Alvarez-type linac LU-20 as injector for light ions, polarized protons and deuterons and a new linac HILac for heavy ions. The main features of ion sources and both linacs are presented. Upgrade for pre- accelerator of LU-20 is described. nuclei. The polarized beams mode is proposed to be used in the energy range of  sNN = 12ψ27 GeV (protons) at a luminosity up to 1 10 32 cm  2  s -1 . It is supposed that SPP (Source of Polarized Particles), LIS (Laser Ion Source) and Duoplasmatron (arc source) would be ion sources for LU-20 with the subsequent injection into the operational superconducting synchrotron Nuclotron. The heavy ions from ESIS (Electron String Ion Source) will be injected into HILac followed by acceleration in Booster. The beam must then be stripped to get bare nuclei for injection into the Nuclotron. After the final acceleration in the Nuclotron the ions transfer into the collider rings. An upgrade of LU-20 based injector with a substantial improvement of the ion sources SPP and ESIS is needed. Update of LIS is also desirable to increase charge state of ions being injected into LU-20.