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undulator

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WECHY01 Status and Prospects of the Novosibirsk FEL Facility electron, radiation, laser, free-electron-laser 133
 
  • N. Vinokurov, E. N. Dementyev, B. A. Dovzhenko, A. A. Galt, Ya. V. Getmanov, B. A. Knyazev, E. I. Kolobanov, V. V. Kubarev, G. N. Kulipanov, L. E. Medvedev, S. V. Miginsky, L. A. Mironenko, V. K. Ovchar, B. Z. Persov, V. M. Popik, T. V. Salikova, M. A. Scheglov, S. S. Serednyakov, O. A. Shevchenko, A. N. Skrinsky, V. G. Tcheskidov, M. G. Vlasenko, P. Vobly, N. S. Zaigraeva
    BINP SB RAS, Novosibirsk
  Multiturn energy recovery linacs (ERL) looks very promising for making ERLs less expensive and more flexible, but have serious intrinsic problems. At this time only one multiturn ERL exists. This Novosibirsk ERL operates with two orbits and two free electron lasers now. The Novosibirsk terahertz radiation user facility provides 0.5 kW average power at 50 - 240 micron wavelength range. Different users work at six stations. Two another orbits and third free electron laser are under construction. The operation experience revealed specific problems of ERLs(especially, of multiturn ones). Some solutions were proposed recently.  
slides icon Slides  
 
WECHB01 Radiation Sources at Siberia-2 Storage Ring radiation, emittance, electron, synchrotron 141
 
  • N. V. Smolyakov, V. Korchuganov, S. I. Tomin
    RRC, Moscow
  At present synchrotron radiation, generated in uniform magnetic fields of bending magnets, is employed at Siberia-2 storage ring. In the near future most of the storage ring’s straight sections should be completed with different insertion devices (undulators, wigglers). In this paper, two projects of radiation sources at Siberia-2 storage ring are considered. The first one is in-vacuum short period mini-undulator, which is projected for generation of extremely bright X-ray beams. It is shown the feasibility of diffraction-limited in vertical direction X-ray source, which is to say that vertical emittance of the electron beam is equal to diffraction emittance of generated by undulator 2 KeV photon beam. The second source will utilize edge radiation, which is generated in the fringe fields of the bending magnets. Numerical simulations show that the edge radiation is more intensive in infrared – ultraviolet spectral range as compared with standard synchrotron radiation from regular part of bending magnet.  
slides icon Slides  
 
WEPSB002 JINR Activity in FEL radiation, photon, laser, electron 175
 
  • E. Syresin, G. A. Chelkov, E. V. Ivanov, M. N. Kapishin, E. A. Matyushevskiy, N. A. Morozov, G. Shirkov, G. V. Trubnikov, M. V. Yurkov
    JINR, Dubna, Moscow Region
  • O. I. Brovko
    JINR/VBLHEP, Moscow
  Different methods for diagnostic of ultrashort electron bunches are developed at JINR-DESY collaboration within the framework of the FLASH and XFEL projects. Photon diagnostics developed at JINR-DESY collaboration for ultrashort bunches are based on calorimetric measurements and detection of undulator radiation. The MCP based radiation detectors are effectively used at FLASH for pulse energy measurements. The infrared undulator constructed at JINR and installed at FLASH is used for longitudinal bunch shape measurements and for two-color lasing provided by the FIR and VUV undulators. The JINR also participates in development and construction of Hybrid Pixel Array Detector on the basis of GaAs sensors. The JINR develops a project which is aimed at preparation of conceptual project and simulations of accelerator complex, based on a 0.7 GeV superconducting linear accelerator, for applications in nanoindustry, mainly for extreme ultraviolet lithography using kW-scale Free Electron Laser (FEL) light source.  
 
WEPSB003 Proposal for an Accelerator Complex for Extreme Ultraviolet Nanolithography Using kW-scale FEL Light Source radiation, electron, laser, free-electron-laser 178
 
  • E. Syresin, N. Balalykin, U. A. Budagov, I. F. Lensky, A. G. Olshevsky, G. Shirkov, A. P. Sumbaev, G. V. Trubnikov
    JINR, Dubna, Moscow Region
  • M. V. Yurkov
    DESY, Hamburg
  The project is aimed at construction of accelerator complex, based on a 0.7 GeV superconducting linear accelerator, for applications in nanoindustry, mainly for extreme ultraviolet lithography using kW-scale Free Electron Laser (FEL) light source. The project involves construction of a 0.7 GeV superconducting linear accelerator to produce coherent FEL radiation for extreme ultraviolet nanolithography at a wavelength of 13.5 nm and an average radiation power of 0.5 kW. The application of kW-scale FEL source permits realizing EUV lithography with 22 nm, 16 nm resolutions and beyond. The project for construction of an accelerator complex for EUV lithography is based on the technology realized on FEL FLASH (Free Electron Laser in Hamburg) facility at DESY (Hamburg).  
 
WEPSB004 Self-stimulated Undulator Radiation Sources electron, radiation, storage-ring, emittance 181
 
  • E. G. Bessonov, M. V. Gorbunkov, A. L. Osipov, A. V. Vinogradov
    LPI, Moscow
  • A. A. Mikhailichenko
    CLASSE, Ithaca, New York
  The self-stimulated undulator radiation (UR) source is based on a quasi-isochronous storage ring, undulators installed in its straight sections and mirrors installed at both sides of undulators*. Mirrors set an optical cavity. Period of oscillation of the UR wavelet (URW) emitted by every particle of the beam in the cavity coincides with common period of revolution of particles in storage ring. The URWs are accumulated in optical cavity by superposition one by another with the accuracy better than the wavelength of the UR. Intensity, which becomes higher by Q times, where Q is the quality factor of optical cavity. If conditions of synchronicity are violated weakly then properties of UR might be different: intensity will drop, monochromaticity will be increased. The selfstimulation of the spontaneous incoherent emission of radiation in the scheme can lead to an increase the seeding process for the SASE regime. The requirements to parameters of the beam and the degree of synchronicity are evaluated. Ordinary and compact storage rings using ordinary and laser undulators and generation of continuous, quasi-monochromatic radiation in the optical to X-ray regions are considered.

* E. G.Bessonov, M. V.Gorbunkov, A. A.Mikhailichenko, A. L.Osipov, Self-stimulated Emission of Undulator Radiation, http://arxiv.org/abs 1003.3747 .

 
 
WEPSB005 Light Sources in Russia electron, storage-ring, radiation, ion 184
 
  • E. G. Bessonov
    LPI, Moscow
  Possible ways of development of Light Sources based on charged particle accelerators and storage rings in Russia are discussed.  
 
WEPSB014 Examination of Charged Particle Dynamics Through Employment of the Fourier Series quadrupole, focusing, lattice, betatron 199
 
  • O. E. Shishanin
    MSIU, Moscow
  In some papers we have considered an influence of the betatron oscillations on synchrotron radiation properties. To obtain uninterrupted solution for the Hill equation, in this case the transverse components of magnetic field were expanded in a Fourier series. This approach was usefully employed and posed problem was resolved in focusing periodic magnetic fields. Using this scheme, the equations of oscillations were also derived for storage rings. It was published in Proceedings of RuPAC2008. The procedure may even work for the various types of wigglers and undulators where the dynamics of particles can be described more precisely with regard to the concrete field inside a single magnet and their arrangement as a whole.