[en] The layout of a resonator for circular SHF scanning of relativistic particle beam where a part of deflected beam power is taken to excite the resonator is described. Two strongly coupled cavities are tuned by the same automatic fine tuning -system unlike the systems with separate resonators. 3 refs.; 5 figs

[en] The project of electron storage ring Sibir'-Sm - a special-purpose synchrotron radiation source is described. The magnetic system of storage ring consists of 4 superperiods, every of which contains 2 superconducting 45 deg bending magnets and 3 quadrupole lenses. At 600 MeV peak energy of the storage ring the magnetic field equals 60 kG. Synchrotron radiation output is performed out of seven bending magnets through beam holes. Characteristics of a beam and synchrotron radiation are presented. The cryogenic system, the high-frequency system and the storage control system are described. 5 refs.; 20 figs

No abstract available

[en] The VEPP-4 5.5 GeV rf accelerating system consisting of six resonators, 5 of which are combined and supplied by a continuously generating USW gyrocon, is described. The sixth resonator is connected to an rf generator built on GI-50A triodes. Each of five resonators has coaxial input and connected to a rectangular waveguide via a waveguide-to-coaxial adapter. The VEPP-4 rf power supply circuit and equivalent circuit of the waveguide-to-coaxial power divider are presented. The designed rf power supply system permits to produce 10 mA current in two beams of storage ring. No current losses due to coherent instabilities caused by the rf system frequency characteristic are observed

[en] The project of RF station which is supposed to be used on accelerators of ions SIS100/300, and after a small modification in the storing ring NESR is presented. The maximal RF voltage on the cavity accelerating gap is 20 kV in the CW mode. The operational RF frequency range for all three accelerators is 0.9 ...2.8 MHz. The descriptions of the RF station design and of the control system are given

[en] The reserve power supply system used for the driving of the VEhPP-4 storage ring. RF-system is described. The valve oscillators with powerful amplifying cascaded with GI-50 A triodes are used as a power supply. The total power at a frequency of 181 MHz constitutes 200 kW, that enbles to attain the voltage with 760 kV amplitude for each of six resonators. The fast-response protection of output generator cascades is provided, which deenergized the anode voltage rom triodes during 50 μs with the anode current twice exceeding the nominal leve. Long-term system operation at a power of 15-30 kW from one output cascade has shown up that valve oscillator service time constitutes about 5000 h. The considered system provides stable operation of the VEhPP-4 storage ring at energy up to 5.3 GeV with a totalcurrent up to 20 mA. At energies of 1.8-4.7 GeV coherent phase oscillations of bunches do not occur at the total beam current up to 40 mA

[en] The racetrack microtron - the continuous action recuperator designed for a free-electron laser is under development in the Novosibirsk Institute for Nuclear Physics. The designed electron energy is 45 MeV, average beam current is 0.1 A. 21 resonators (with peak accelerating voltage of 800 kw and RF-generators with total power of about 2 MW are planned to be applied in the microtron RF-systems. Accelerating cavity resonator and the 181 MHz RF-generator cascades have been developed and tested at a high power level and the steady-state conditions of operation. 4 refs., 1 tab., 2 figs

[en] Upgrade of the RF system of the storage ring Siberia-1 comprises the following: the delivery of more powerful new RF generator, essential upgrade of the accelerating cavity and development of a new control system. The new RF system should allow for the short time of 0.1-1 s to raise the RF voltage of the accelerating cavity from 15 up to 30 kV

[en] A new RF system is constructed to ensure the operation of the VEPP-3 storage rings in two-bunch mode. The system comprises two accelerating resonators, three power amplifiers and control equipment. The first accelerating resonator of the second harmonics of beam repetition frequency presents a short-circuit coaxial line, consisting of two parts. The resonator has the following electric parameters: Q-factor 4000, characteristic resistance 12 Ohm, shunt resistance 48 Ohm, the 20 kV voltage peak amplitude in the gap. The second accelerating resonator is a vacuum one and it operates in two-mode regime at the frequencies of 72.54 and 20.15 MHz at the eighteenth and fifth harmonics. The power amplifier has the output power up to 120 kW. The resonators are equipped with devices for automatic tuning of their proper frequencies using servo-drives

[en] The design of a new HF system of the VEPP-4M storage ring designated for operation with two electron bunches and two positron ones in colliding beams is described. The HF channel with the frequency of 181.8 MHz comprises 6 accelerating copper resonators. HF power supply of the resonators is realized by a generator, the output cascade of which is produced using the GU-101A tetrodes. At the first stage it is intended to attain the power of 300 kW in the double-valve cascade. Later the generator power will reach 1 mW, which means that the storage ring will be able to with the energy of 6 GeV and current of 4x50 mA. 8 refs.; 1 fig