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  • 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) Power supply systems for the buster ring BEP and for the collider VEPP-2000

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 re- versible current polarity with maximal current up to 10kA and maximal voltage up to 340V. Cur- rent instability is better than 50ppm. System is designed like a combination of eight thyristor rec- tifier modules and their passive filters joined in parallel to organize twelve ; pulse rectifier. Sys- tem 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 maxi- mal output voltage 120V. Current instability is better than 10ppm. Precise DAC and ADC mod- ules for control and measurements are essential parts of the systems. Parameters, interesting schematics and tests results should be presented.

Konctantin Gorchakov: K.M.Gorchakov@inp.nsk.su

O.V.Belikov, D.E.Berkaev, V.R.Kozak, A.S.Medvedko (Budker Institute of Nuclear Physics, Novosibirsk, Russia)

Power supply system for corrector magnets of VEPP-2000 complex

A magnet system of Electron-positron collider VEPP-2000 include about 180 elements of field correction. It includes more that 80s correctors for the BEP-buster ring, about 70 for collider VEPP-2000 and about 30 for transportation channels. Powering of the correctors were realized by bipolar DC current sources PA-6 and PA-20, with output current 6A for PA-6 and 20A for PA-20. The current ripple do not exceed 0,1%. An output voltage 120V for PA-6 and 80V for PA-20. A structure of correction unit and amplifying module is described.

Oleg Vital'evich Belikov: O.V.Belikov@inp.nsk.su

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