STATUS OF KHARKOV X-RAY GENERATOR NESTOR BASED ON COMPTON BACK SCATTERING* V. Androsov, E. Bulyak, A. Dovbnya, I. Drebot, P. Gladkikh, V. Grevtsev, Y. Grigor’ev, A. Gvozd, V. Ivashchenko, I.I. Karnaukhov, I.M. Karnaukhov, N. Kovalyova, V. Kozin, V. Lyashchenko, N. Mocheshnikov, V. Margin, A. Mytsykov, I. Neklyudov, F. Peev, A. Reuzayev, A. Shcherbakov, S. Sheyko, V. Skirda, Y. Telegin, V. Trotsenko 1 , A. Zelinsky, O. Zvonaryova, NSC KIPT, Kharkov, Ukraine J.I.M. Botman, Eindhoven University of Technology, Netherlands Abstract The purpose of NESTOR (New Electron STOrage Ring) project is to create intense X-ray generator based on compact storage ring and Compton back scattering in the National Science Centre “Kharkov Institute of Physics and Technology”. It allows to carry out investigations in the wide range of fundamental and applied sciences such as physics, biology, medicine and etc. The facility consists of the compact 40-225 MeV storage ring, linear 35-90 MeV electron accelerator as an injector, transportation system, Nd:Yag laser and optical cavity. In addition to hard Compton radiation it is supposed to use 4 soft vacuum ultraviolet radiation channels of natural synchrotron radiation of dipole. The facility is going to be put in operation in the middle of 2009 and the expected X-rays flux will be of about 10 13 phot/s. In the paper the main facility parameters are presented. INTRODUCTION The last few years the sources of the X-rays NESTOR based on a storage ring with low beam energy and Compton scattering of intense laser beam are under design and development in NSC KIPT [1,2]. The paper is devoted to description of the last results on construction of the facility. During the last year a linear accelerator- injector has been put into operation, all electromagnetic elements of the storage ring have been manufactured and installed on the ring, water cooling system and stabilized power supply system have been tested, RF cavity was manufactured in Novosibirsk and delivered to NSC KIPT, the scheme of injection was renovated and new inflector was designed. Vacuum chambers of bending magnets for the ring and injection channels have been manufactured. MAIN FACILITY PARAMETERS NESTOR facility project has been described in many details earlier [1-3]. The main task of the project is to develop compact intense X-ray generator on the base of relatively cheap accelerator equipment and up-to-date laser technologies. It is supposed that after experimental stage of operation in accelerator centres, facilities of such type can be installed in many medical and scientific establishments to carry out investigations in the wide range of fundamental and applied sciences. The main parameters of NESTOR X-ray source are presented in the Table 1. Table 1: The main NESTOR facility parameters Parameter Value Storage ring circumference, m 15.418 Electron beam energy range, MeV 40-225 Betatron tunes Q x , Q z 3.155; 2.082 Amplitude functions x , z at IP, m 0.14; 0.12 Linear momentum compaction factor 1 0.01-0.078 RF acceptance, % > 5 RF frequency, MHz 700 RF voltage, MV 0.3 Harmonics number 36 Number of circulating electron bunches 2; 3; 4; 6; 9; 12; 18; 36 Electron bunch current, mA 10 Laser flash energy into optical cavity, mJ 1 Collision angle, degrees 10; 150 Scattered photon energy (Nd laser, las = 1.16 eV), keV 6-900 Spectral brightness, phot/(s mm 2 mrad 2 0.1%BW) 5 10 12- 5 10 13 4800 3280 1000 5000 10140 TEMPERATURE CONTROL SYSTEM SELF- EXCITED OSCILLATOR VACUUM SYSTEM FOCUSING SYSTEM ESM 4300 Figure 1. Layout of the NESTOR linear accelerator injector. LINEAR ACCELERATOR It is supposed that 60 MeV accelerator section that will be used on the first stage of NESTOR operation as injector will provide the main parameters that are listed in the Table 2. ___________________________________________ *Work supported by NATO SfP Grant #977982 zelinsky@kipt.kharkov.ua Proceedings of EPAC08, Genoa, Italy MOPC047 02 Synchrotron Light Sources and FELs A14 Advanced Concepts 175