• 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.

• E.N.Dementyev, V.R.Kozak, E.A.Kuper, A.S.Medvedko, A.D.Oreshkov, A.V.Ovchar, T.V.Salikova, P.A.Selivanov, S.S.Serednyakov, E.N.Shubin, S.V.Tararyshkin, N.A.Vinokurov
  Budker Institute of Nuclear Physics, Novosibirsk, Russia

In this article the architecture of control system of Free Electron Laser for the Siberian Center for photochemical research is presented. The basic structure of whole control system and the basic hardware components of individual subsystems are described. Also the hardware interfaces and main types of control devises, used for connection and control are shortly described. The main features of each subsystem and of whole control system are enumerated. Also the main features of control software are described.

209

• E.A.Kuper, A.D.Oreshkov, A.V.Repkov, T.V.Salikova, D.A.Sklokin, S.V.Tararyshkin, N.A.Vinokurov
  Budker Institute of Nuclear Physics, Novosibirsk, Russia

In this article is described the radiation dosimetry diagnostic system of the powerful terahertz Free Electron Laser constructed in the Siberian Center for Photochemical Research. Radiation dosimetry system contains the new technological decisions: hardware and software intended for the radiation’s monitoring and tracing of losses of a beam in the vacuum chamber.

231

• N.A.Vinokurov, G.Ya.Kurkin, L.E.Medvedev, L.A.Mironenko., A.D.Oreshkov, T.V.Salikova, M.A.Scheglov
  Budker Institute of Nuclear Physics, Novosibirsk, Russia

In this article is described the vacuum system of the powerful terahertz free electron laser constructed in the Siberian Center for Photochemical Research. Vacuum system of FEL contains the new technological decisions: standby blocks - power supply of pumps; hardware and software intended for the vacuum's monitoring and ensuring the protection of some technological units of FEL in case of vacuum's downturn

287