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Plenary session: SRS and FEL

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    A.Vinokurov, D.A.Kayran, B.A.Knyazev, E.I.Kolobanov, V.V.Kotenkov, V.V.Kubarev,

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    N.Kulipanov, A.V.Kuzmin, A.S.Lakhtychkin, A.N.Matveenko, L.E.Medvedev, S.V.Miginsky,

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    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, Novosi-

birsk, Russia) Status of the Novosibirsk High Power Terahertz FEL

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.

Dr. Nikolay Alexandrovich Vinokurov: N.A.Vinokurov@inp.nsk.su

T.Weis, U.Berges, J.Friedl, P.Hartmann, R.Heine, D.Schirmer, G.Schmidt, K.Wille (DELTA, Dortmund University, Germany)

Status of the 1.5 GeV Synchrotron Light Source DELTA and Related Accel- erator Physics Activities

The University of Dortmund, Germany is operating the 1.5 GeV storage ring based synchrotron light source DELTA. The machine is operated at 3000 h/year, 2/3 for dedicated synchrotron ra- diation research at 6 beamlines and 1/3 for machine dedicated accelerator physics research. Edu- cation and training of students of undergraduate and graduate level is a major task of the facility. Nominal beam parameters at 1.5 GeV are: beam current 120 mA, lifetime ~8 h, emittance 20 nm rad. Two undulators and a superconducting multipole wiggler serve as insertion devices. The pa- per will cover the present status of machine, beamlines and operation and will give an overview on accelerator related research activities. Presently the prototype of a 500 MHz higher order mode damped cavity, developed in the framework of an EU-collaboration under the leadership of BESSY, Berlin, is installed and tested. Other topics addressed will be the operation experience with the 5.5 Tesla superconducting wiggler, the implementation of turn by turn diagnostic tools for quick instability analysis and progress concerning orbit control and stabilization.

Prof. Dr. Thomas Weis: weis@delta.uni-dortmund.de

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