• K.M.Gorchakov, Yu.A.Evtouchenko, V.R.Kozak, A.S.Medvedko, S.P.Petrov, R.Z.Pronik, O.A.Proskurina, V.P.Prosvetov, S.S.Vasichev, V.F.Veremeenko
  Budker Institute of Nuclear Physics, Novosibirsk, Russia

Two power supply systems for bending magnets of the buster ring BEP and for the collider VEPP-2000 are described. The power supply for bending magnets of buster ring BEP has reversible current polarity with maximal current up to 10kA and maximal voltage up to 340V. Current instability is better than 50ppm. System is designed like a combination of eight thyristor rectifier modules and their passive filters joined in parallel to organize twelve ; pulse rectifier. System is equipped with the 10kA thyristor bridge to reverse the current polarity. The power supply for the collider VEPP-2000 consists of two thyristor rectifier modules and their passive filters joined in parallel. This power supply has unidirectional output current of up to 10kA with maximal output voltage 120V. Current instability is better than 10ppm. Precise DAC and ADC modules for control and measurements are essential parts of the systems. Parameters, interesting schematics and tests results should be presented.

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MOAP03

• D.E.Berkaev, Yu.M.Shatunov, I.A.Koop, F.V.Podgorny, A.P.Lysenko, P.Yu. Shatunov, V.V.Druzhinin, D.B.Shwartz, V.P.Prosvetov
  Budker Institute of Nuclear Physics, Novosibirsk, Russia

Electron-positron collider VEPP-2000 is under commissioning at Budker Institute of Nuclear Physics. The paper presents the injection system of the collider delivering the beam from the booster storage ring BEP with maximum energy 900 MeV. A matching of the beam injection with the storage ring optics is done with a respect to nonlinear kicker field. Features of beam diagnostic and transfer line magnets including pulse septums (100 mksec; 30 kGs) and fast kickers (20 nsec; 70 kV) are described. Results of magnetic measurements and their comparison to calculated data are given.

• V.S.Arbuzov, Yu.A.Biryuchevsky, A.A.Bushuev, E.I.Gorniker, E.K.Kendjebulatov, A.A.Kondakov, I.A.Koop, S.A.Krutikhin, Ya.G.Kruchkov, I.V.Kuptsov, G.Ya.Kurkin, N.V.Mityanina, S.V.Motygin, V.N.Osipov, V.M.Petrov, A.M.Pilan, A.M.Popov, V.P.Prosvetov, E.A.Rotov, I.K.Sedlyarov, Yu.M.Shatunov, A.G.Tribendis, V.N.Volkov, S.V.Volobuev
  Budker Institute of Nuclear Physics, Novosibirsk, Russia

The description of storage ring VEPP-2000 RF system is given. The RF system consists of an RF generator with a tetrode GU-101A in the generator output stage and with output power of 60 kw in CW mode, an accelerating cavity with damping of the high orders modes (HOM) and accelerating voltage of 120 kV and a control system providing tuning of RF cavity and control of accelerating voltage phase and amplitude. Detailed description of operation of automatic frequency tuning system of choke-filter, which prevents a leakage of RF power of the accelerating mode to one (of two) HOM dumper, and a system of automatic frequency tuning of cavity operating mode is given. The results of RF system commissioning are given. Now the RF system is made, assembled and installed to the storage ring.

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