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Miginsky, S.V.

Paper Title Page

MONO01

 Status of the Novosibirsk High Power Terahertz FEL 
  • N.A.Vinokurov, D.A.Kayran, B.A.Knyazev, E.I.Kolobanov, V.V.Kotenkov, V.V.Kubarev, G.N.Kulipanov, A.V.Kuzmin, A.S.Lakhtychkin, A.N.Matveenko, L.E.Medvedev, S.V.Miginsky, L.A.Mironenko, A.D.Oreshkov, V.K.Ovchar, V.M.Popik, T.V.Salikova, S.S.Serednyakov, A.N.Skrinsky, O.A.Shevchenko, M.A.Scheglov
    Budker Institute of Nuclear Physics, Novosibirsk, Russia

The first stage of Novosibirsk high power free electron laser (FEL) was commissioned in 2003. It is based on the normal conducting CW energy recovery linac (ERL). Now the FEL provides electromagnetic radiation in the wavelength range 120 - 230 micron. The maximum average power is 400 W. The minimum measured line width is 0.3%, which is close to the Fourier-transform limit. Four user stations are in operation now. Manufacturing of the second stage of the FEL (based on the four-turn ERL) is in progress.

 

 

WEJO02

 Optimal Beamlines for Beams with Space Charge Effect 
  • S.Miginsky
    Budker Institute of Nuclear Physics, Novosibirsk, Russia

Space charge effect is ever of fundamental importance for low-energy parts of accelerators. Criteria of the significance of space charge effect are derived in the presentation. Simple and robust estimations of the emittance degradation in various space charge affected beamlines were obtained analytically and numerically. Nonuniform longitudinal and transverse distribution of current, accelerating and bunching were taken into account. The parameters of optimal beamlines for space charge affected beams were estimated.

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MOJP03

 1.8 keV Compton X-ray Source Driven by SC Linac at KAERI 
  • S.V.Miginsky, A.V.Bondarenko
    Budker Institute of Nuclear Physics, Novosibirsk, Russia
  • B.C.Lee, S.H.Park, Y.U.Jeong, Y.H.Han
    Korea Atomic Energy Research Institute, Daejeon, Korea

A quasi-monochromatic X-rays source based on the KAERI SC linac system has been designed and is being manufactured now. 10 MeV 10 mA electron beam together with 20 W 1.06 um laser beam will be used for 1.8 keV Compton X-ray generation with a few percentage of energy spread and 107 photons per second. A simple straight beamline was designed to deliver the electron beam with no degradation of its emittance and energy spread and to focus it to a proper size to produce the desired X-rays. We expect the first demonstration of 1.8 keV Compton X-ray generation in autumn, 2006.

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MOJP04

 An Upgrade of SC Linac at KAERI to ERL 
  • S.V.Miginsky, A.V.Bondarenko
    Budker Institute of Nuclear Physics, Novosibirsk, Russia
  • B.C.Lee, S.H.Park, Y.U.Jeong, Y.H.Han
    Korea Atomic Energy Research Institute, Daejeon, Korea

A project of an ERL at Korea Atomic Energy Research Institute is described. The future ERL will be connected to the existing machine without any modification. It consists of two 180 deg. bents and two straight sections: one for an FEL, another for a Compton X-ray source. One can choose the source controlling the magnets. The total ERL is isochronous to avoid any problems with longitudinal beam instability. The total relative emittance degradation through the whole machine is 1.5. The FEL will be based on a 2 m helical in-vacuum undulator made of permanent magnets. One mirror of the optical cavity is blind and made of copper, the other one, the outcoupler, is semi-transparent and made of CVD diamond. The expected average FEL power is a few kW, the tuning range 35, ,70 um.

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