3 research outputs found
Mode Competition in Relativistic Magnetrons and Injection Locking in KW Magnetrons
Both relativistic and nonrelativistic magnetrons are under experimental and theoretical investigation at U of M. Relativistic (Titanâ6âvane) magnetron experiments (300â400 kV, 1â10 kA, 0.5 microsecond) investigate mode control with various output coupling geometries. Mode competition between the pi mode and the 2/3 pi mode has been characterized for twoâversusâthree output extractors for comparison with particle in cell simulations. Phase measurements and timeâfrequencyâanalysis are performed for mode identification. Peak microwave output power on the order 0.5 GW has been measured, assuming equal output from 3 waveguides. Nonrelativistic (4 kV, <1A, kW microwave power) magnetron experiments are performed on commercial oven magnetrons for an inâdepth investigation of crossedâfield injectionâlocking and noise. Injectionâlocking is demonstrated by utilizing an oven magnetron as a reflection amplifier. Noise generation is explored as a function of injected signal and cathode conditions. © 2003 American Institute of PhysicsPeer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/87505/2/301_1.pd