MAINTENANCE OF ITEP-TWAC FACILITY OPERATION AND MACHINE CAPABILITIES DEVELOPMENT

The ITEP-TWAC facility operation with proton and heavy ion beams for ~4000 hours per year in several modes of beam acceleration and accumulation is determined by present-day demands of different beam users in the frame of current machine resources. Displacement of state interests from fundamental research to strictly-practical tasks as the spirit of the time stimulates multimode operation of accelerators with tendency of beam using for applications on the basis of modern beam technologies development. Mastering of Ag 19+ ions acceleration in the UK ring up to the energy of 100 MeV/u and Fe 26+ beam stacking in the U-10 ring at the energy of >200 MeV/u in addition to routine operation with C 6+ beam at energy of 200-400 MeV/u with fast and slow extraction of circulating beam clear the way to beam using for a lot of applications requiring extension of the facility experimental area. Development of laser ion source (LIS) technology takes aim at high current and high charge state ions generation to get ratio of Z/A up to 0.4 for elements with A ~ 60 to be effectively stacked in the U-10 ring with multiple charge exchange injection technique at the beam energy of ~700 MeV/u. The machine maintenance efforts and current results of activities aiming at both subsequent improvement of beam parameters and extending of beam applications are presented.