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Matveenko, A. N.

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MOPPH044 Status of Novosibirsk ERL and FEL  
 
  • N. Gavrilov, B. A. Knyazev, E. I. Kolobanov, V. V. Kotenkov, V. V. Kubarev, G. N. Kulipanov, A. N. Matveenko, L. E. Medvedev, S. V. Miginsky, L. A. Mironenko, V. Ovchar, V. M. Popik, T. V. Salikova, M. A. Scheglov, S. S. Serednyakov, O. A. Shevchenko, A. N. Skrinsky, V. G. Tcheskidov, N. Vinokurov
    BINP SB RAS, Novosibirsk
  
  The Novosibirsk terahertz free electron laser is based on the energy recovery linac (ERL) with room-temperature radiofrequency system. Some features of the ERL are discussed. The results of emittance measurements and electron optics tests are presented. The first stage of Novosibirsk high power free electron laser (FEL) was commissioned in 2003. Now the FEL provides electromagnetic radiation in the wavelength range 110 - 230 micron. The average power is 400 W. The minimum measured linewidth is 0.3%, which is close to the Fourier-transform limit. Four user stations are in operation. The second stage of the ERL, which has four orbits, is under construction.  
TUAAU02 Electron Outcoupling Scheme for the Novosibirsk FEL 204
 
  • O. A. Shevchenko, V. G. Tcheskidov, N. Vinokurov, A. N. Matveenko
    BINP SB RAS, Novosibirsk
  
  One of the main problems of contemporary high power FELs is the mirror heating. One of the possible solutions of this problem is the use of electron outcoupling*. In this case the mirrors of optical resonator are not transparent and the coherent radiation from an additional undulator in the FEL magnetic system is used. To provide the output of this radiation the electron beam in the auxiliary undulator is deflected from the optical resonator axis. To save bunching it is preferable to use the achromatic deflecting bend. The project of electron outcoupling for the Novosibirsk FEL is described. Simulation results are presented.

* N. G. Gavrilov et al., NIM A304 (1991) 63-65

 
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THAAU05 Light Pulse Structure, Spectrum and Coherency of Novosibirsk Terahertz Free Electron Laser  
 
  • E. I. Kolobanov, V. V. Kotenkov, G. N. Kulipanov, A. N. Matveenko, L. E. Medvedev, V. K. Ovchar, K. S. Palagin, T. V. Salikova, M. A. Scheglov, S. S. Serednyakov, N. Vinokurov, V. V. Kubarev
    BINP SB RAS, Novosibirsk
  
  Light pulse structure and spectrum of Novosibirsk free electron laser were studied by direct independent methods. Super fast Schottky diode was used in time domain experiments. Method of vacuum Fourier spectroscopy was applied for spectral investigations. Observation of spectral stability of each light pulse was made by grating monochromator with Schottky diode. Influence of cogerency on harmonic powers is also shown.  
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FRAAU03 Compact Ring FEL as a Source of High Power Infrared Radiation 517
 
  • A. N. Matveenko, N. Vinokurov, O. A. Shevchenko
    BINP SB RAS, Novosibirsk
  
  Ring FELs* were proposed mainly to improve the quality of radiation of x-ray FELs. Their main advantage is the absence of mirrors. It appears that this advantage is also useful for high power FELs. Another reason to build infrared ring FEL is the proof-of-principle for shorter wavelength FELs. Therefore we considered the scheme of infrared ring FEL which requires ERL with beam energy 50 MeV. Using extensive simulations we developed requirements for electron beam parameters and magnetic system of ring FEL. In spite of rather compact design such FEL may provide more than 10 kW average power.

* N. A. Vinokurov, O. A. Shevchenko, NIM A528 (2004) 491-496

 
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