SCIENTIFIC AND ORGANIZATION STRUCTURE

MICROWAVE ELECTRONICS LABORATORY

The Microwave Electronics Laboratory was established on the basis of Laboratory of Electron Beams initially headed from 1977 until 1986 by Academician S.P. Bugaev and then by Dr. V.I. Koshelev. In July of 1996, a Group of electron and ion beams leaded by Ph.D. E.N. Abdullin joined the laboratory. At present time the laboratory staff consists of 22, including 4 Doctors of Sciences and 5 Candidates of Sciences.

Scientific Activities

Forming of high-current electron beams.
Generation of highpower microwave radiation.
Ultra-wideband electrodynamics and radar.

The basic scientific achievements
Investigations on physical processes taking place in coaxial diodes with magnetic insulation were carried out. Using the accelerator GAMMA, hollow electron beams with the following characteristics have been obtained: energy of electrons is 1-2.5 MeV, beam current is 5-60 kA, pulse duration is 0.5-15 ms, power is 5-100 GW, energy is 10-140 kJ, beam diameter is 6-36 cm.
Investigations on formation of high-current wide-aperture e-beams in explosive diodes were done. High-power vacuum diodes meant for use in high-current electron accelerators have been created and (jointly with the Pulsed Power Department) the beams with cross section of up to 3 m², electron energy of up to 600 keV, beam current of up to 700 kA have been obtained for excitation of excimer lasers of 600-l active volume.
Theoretical and experimental studies (jointly with the Moscow State University and Institute of Radioelectronics RAS) devoted to electromagnetic field interaction with high-current hollow electron beams in overmoded sectional slow-wave circuits have been performed. Novel devices in the field of relativistic microwave electronics, i.e. multiwave generators have been developed. Microwave pulses have been obtained in the wavelength range of 0.5-3 cm with power of 0.5-15 GW and duration of 30-700 ns involving accelerators GAMMA and SINUS-7M.
Based on the developed approach (jointly with the Tomsk State University) consisting in combination of electrical and magnetic oscillators in the radiator near-field region, the compact units of ultra-wideband antennas were created meant for emitting nano- and subnanosecond pulses with efficient energy and peaking power as 90% and 60%, correspondingly. Based on the worked out antennas and arrays (jointly with the Pulse Power Department) the sources of high-power directed wave beams (0.1-1 GW) of ultrawideband electromagnetic radiation have been manufactured.
Object recognition techniques intended for ultrawideband radar based on the method of genetic functions and impulse responses have been developed. Computing 3D code and vector receiving antenna to study polarization patterns of the scattered by objects ultrawideband radiation were elaborated.

| | | | | | | | | |