Medvedko, A.S.
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BYPASS SYSTEM FOR SHUNTING OF ELECTROMAGNETS FOR ACCELERATORS AND STORAGE RINGS |
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O.V. Belikovª, A.D. Chernyakin, V.R. Kozak, A.S. Medvedko Budker Institute of Nuclear Physics Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia Abstract The bypass module was developed for correction of magnetic field in the bending magnet gap through partially taking current away from the coil. The SHUNT-20 bypass module that is presented in this work is able to take a current of up to 20A away from the coil of electromagnet. The device developed allows both recuperation of the taken energy to the main power source of the electromagnet and energy dump to a ballast load. The bypass module is remotely monitored and controlled through a CAN-bus. The SHUNT-20 modules are made by the Switch Mode Technology with application of the up-to-date components in the "Euromechanics" standard. ª – corresponding author |
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FOUR-QUADRANT POWER SUPPLIES FOR STEERING ELECTROMAGNETS FOR ELECTRON-POSITRON COLLIDER |
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O.V. Belikovª, V.R. Kozak, A.S. Medvedko Budker Institute of Nuclear Physics Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia Abstract Specialized power supplies for electromagnets for accelerators and charged particle storage rings have been designed and manufactured at Budker Institute of Nuclear Physics for many years [1]. It turned out to be optimal to divide power supplies for correction elements into two groups according to their output parameters. This work presents two types of power supplies for steering magnets with a maximum output current of ±6À (MPS-6) and ±25À (MPS-25). The power supplies are manufactured under the Switch Mode Technology in the "Euromechanics" standard with application of up-to-date components. ª – corresponding author |
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HIGH-VOLTAGE SOURCE WITH OUTPUT VOLTAGE UP TO 60 kV WITH OUTPUT CURRENT UP TO 500 mA |
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I.A. Gusev, A.S. Medvedko, A.Yu. Protopopov, D.N. Pureskin, D.V. Senkovª Budker Institute of Nuclear Physics Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia Abstract The presented report contains the description of high-voltage source with output voltage up to 60 kV and output current up to 500 mA. The source consist of the converter with IGBT switches, working with a principle of pulse-width modulation on programmed from 15 to 25 kHz frequency, and the high voltage sectioned transformer with the rectifier and additional capacitive filter. The transformer is placed in oil tank with silicon oil. The additional capacitive filter provides low ripple and noise level in working range of output currents. The design of the high-voltage transformer provides preservation of working capacity at voltage up to 100 kV. The stored in transformer and matching circuit energy is less than 15 J at maximum operating voltage 65 kV. The efficiency of system is more than 80% at the nominally output power 30 kW. The controller of the source is developed with DSP and PLM, which allows optimizing operations of the source, optimizing short circuit protection and transient process for load variation. Transient process is less than 6 kV in voltage and the transient process time is less than 5 ms for full load variation from 0 to 500 mA. For control of the source serial CAN-interface is used. The description of the source and the test results are presented. ª – corresponding author |
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POWER SUPPLIES FOR THE BENDING MAGNETS OF THE BEP AND VEPP-2000 STORAGE RING |
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K.M. Gorchakovª, S.S. Vasichev, V.F. Veremeenko, V.R. Kozak, A.S. Medvedko, R.Z. Pronik, V.P. Prosvetov, O.A. Proskurina Budker Institute of Nuclear Physics Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia Abstract In autumn 2006 at BINP was started new complex VEPP-2000. The two new power supply for bending magnet was built for BEP and VEPP-2000 storage ring. ª – corresponding author |
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