Title :
A high-power relativistic magnetron of new conception: simulation and experiment
Author :
Bogachenkov, V.A. ; Papadichev, V.A. ; Fedorov, V.M. ; Tarakabov, V.P. ; Silin, V.A.
Author_Institution :
Lebedev (P.N.) Phys. Inst., Moscow, Russia
Abstract :
Investigations on increasing the power and efficiency of a relativistic magnetron microwave generator with “large anode” are presented. General parameters of the installation are: wavelength λ=10 cm (S-band), anode-cathode gap is 1 cm, high voltage pulse of 150 ns duration V0=500 kV and axial pulsed magnetic field B0=0.5 T. Microwave power of P~~1 GW is emitted through a cylindrical waveguide with TM01 mode and a horn with a 28-cm output diameter. The first magnetron version VF-1 was limited to a microwave power level of 0.3 GW. It was determined primarily by RF-breakdown inside the cavities and the output space mode RF-converter (resonator structure-coaxial emitter). The new magnetron contains 12 resonators of the open saw-shape type. To eliminate the storage of electrons inside resonator cavities, we use additional permanent magnets in all vanes of the resonators. Finally, we changed the classical Boot-Pickering spatial RF-converter. The new semi-transparent RF-converter transforms both symmetrical and non-symmetrical magnetron modes to travelling waves of the output waveguide
Keywords :
cavity resonators; magnetrons; microwave generation; microwave tubes; travelling wave tubes; 0.3 GW; 0.5 T; 1 GW; 1 cm; 10 cm; 150 ns; 28 cm; 500 kV; RF-breakdown; VF-1; cylindrical waveguide; high-power relativistic magnetron; nonsymmetrical magnetron modes; open saw-shape resonators; output space mode RF-converter; relativistic magnetron microwave generator; resonator structure-coaxial emitter; semitransparent RF-converter; symmetrical magnetron modes; travelling waves; Anodes; Cathodes; Coaxial components; High power microwave generation; Magnetic fields; Microwave generation; Physics; Pulse generation; Switches; Voltage;
Conference_Titel :
High-Power Particle Beams, 1998. BEAMS '98. Proceedings of the 12th International Conference on
Conference_Location :
Haifa
Print_ISBN :
0-7803-4287-9
DOI :
10.1109/BEAMS.1998.816957