| Paper |
Title |
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| TUPLT128 |
The Operation Modes of Kharkov X-ray Generator based on Compton Scattering NESTOR
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1428 |
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- A.Y. Zelinsky, E.V. Bulyak, P. Gladkikh, I.M. Karnaukhov, A. Mytsykov, A.A. Shcherbakov
NSC/KIPT, Kharkov
- T.R. Tatchyn
SLAC/SSRL, Menlo Park, California
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The results of theoretical and numerical considerations of linear Compton scattering are used to evaluate characteristics of X-rays produced by collision between a low emittance electron beam and intensive laser light in an X-rays generator NESTOR of NSC KIPT. Two main generation modes have been under consideration at preliminary NESTOR design. There are the operation mode for medicine 33.4 keV X-rays production using 43 Mev electron beam and Nd:YAG laser beam and higher energy X-rays production mode providing X-rays with energy up to 900 keV with 225 MeV electron beam and Nd:YAG laser beam. It is supposed to use an optical cavity for laser beam accumulation of about 2.6 m long and an interaction angle of about 30 in both operation modes. A few more operation modes provide possibility to expand operation range of NESTOR. Using interaction angle 100 and 1500 along with optical resonator 42 or 21 cm long and the second mode of laser light it is possible to produce X-rays in energy range from a few keV till 1.5 MeV. The intensity and spectral brightness of the X-rays is expected to be ~ 1013 phot/s and ~ 1013 phot/s/mm2/mrad2/0.01%BW respectively.
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| WEPLT138 |
Laser Cooling of Electron Bunches in Compton Storage Rings
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2158 |
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- E.V. Bulyak
NSC/KIPT, Kharkov
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Self-consistent dynamics of a bunch circulating in the Compton storage ring has been studied analytically. Disturbances from both the synchrotron and Compton radiations were taken into account. The emittances in laser-dominated rings (where the synchrotron energy losses are much smaller then the Compton ones) were evaluated. The resultant emittances (synchrotrons plus Comptons) were compared with the synchrotrons. As were shown, the longitudinal degree of freedom is heated up due to Compton scattering. Almost the same conclusion is valid for the vertical uncoupled betatron emittance. Since it is impossible in principle to get zero dispersion in the banding magnets, the radial emittance almost always cooling down by laser. Therefore in practical cases of coupled transverse oscillations with the horizontal emittance determining the vertical one, the laser will cool down the transverse degrees of freedom.
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| THPKF063 |
Parameters of X-ray Radiation Emitted by Compton Sources
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2406 |
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- E.V. Bulyak, V. Skomorokhov
NSC/KIPT, Kharkov
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Presented are results of analytical study on X–ray beam parameters generated in the Compton storage rings. A model with the given circulating electron bunch parameters and the laser splash as well is considered. For this model, the total yield of x–ray quanta is derived as a function of the crossing angle and geometric dimensions of both the bunch and splash. Also spectral characteristics of emitting x–ray beam are evaluated with account for the collimating conditions and both the angular and energy spreads in the bunch. As is shown the width of x–ray energy spectrum is narrowest for the x-ray beam collimated along the bunch orbit. With increasing the scattering angle (with respect to the bunch orbit) the spectrum of emitting quanta is widening. Problems of x-ray beam generation with required energy and brightness with the Compton storage rings are discussed.
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| THPKF064 |
Status of Kharkov X-ray Generator based on Compton Scattering NESTOR
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2409 |
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- A.Y. Zelinsky, V.P. Androsov, E.V. Bulyak, I.V. Drebot, P. Gladkikh, V.A. Grevtsev, V.A. Ivashchenko, I.M. Karnaukhov, V. Lapshin, V. Markov, N.I. Mocheshnikov, A. Mytsykov, F.A. Peev, A.V. Rezaev, A.A. Shcherbakov, V.L. Skirda, V.A. Skomorokhov, Y.N. Telegin, V.I. Trotsenko
NSC/KIPT, Kharkov
- A. Agafonov, A.N. Lebedev
LPI, Moscow
- J.I.M. Botman
TUE, Eindhoven
- T.R. Tatchyn
SLAC/SSRL, Menlo Park, California
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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 43 - 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 facility is going to be in operation in the middle of 2006 and generated X-rays flux is expexted to be of about 1013 phot/s.
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