Status of Kharkov x-ray generator NESTOR

Nowadays the sources of the X-rays based on a storage ring with low beam energy and Compton scattering of intense laser beam are under development in several laboratories. In the paper the state-of-art in development and construction of cooperative project of a Kharkov advanced X-ray source NESTOR based on electron storage ring with beam energy 40 - 225 MeV and Nd:YAG laser is described. The layout of the facility is presented and main results and constructing timetable are described. The designed lattice includes 4 dipole magnets with combined focusing functions, 20 quadrupole magnets and 19 sextupoles with octupole component of magnetic field. At the present time a set of quadrupole magnet is under manufacturing and bending magnet reconstruction is going on. The main parameters of developed vacuum system providing residual gas pressure in the storage ring vacuum chamber up to 10 -9 torr are presented along with testing measurement at NSC KIPT vacuum bench. The basic parameters of the X-rays source system such as laser system, diagnostic system, injection system are presented. The facility is going to be in operation in the middle of 2006 and generated X-rays flux is expected to be of about 10 13 phot/s .