To satisfy up-to-date technical requirements NSC KIPT hard X-ray source on the base of Compton scattering NESTOR should be modified. Essential modernization should be done in accelerator-injector, lattice of the storage ring, RF and optical systems.
Modernizations requires corresponding changes in the design of the high-frequency system, and this, in turn, leads to the need to modernize the laser-optical system. The necessary calculations were carried out to determine the new characteristics of the pulsed laser, the Fabry-Perot cavity, and the lens system matching the beam geometry in the path and the optical resonator. The results obtained confirm the possibility of using an already existing laser-optical system at a new operating frequency of the accelerator with some changes in the design.
The technical proposals of the facility modernizations and results of beam dynamic simulations in the modified facility are presented and described.