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Experiments have been performed in testing magnetic priming at the cathode of a relativistic magnetron to study the effects on high-power microwave performance. Magnetic priming consists of N/2 azimuthal magnetic perturbations applied to an N-cavity magnetron for rapid generation of the desired number of electron spokes for the pi-mode. Magnetic perturbations were imposed by utilizing three high-permeability...
Magnetic priming experiments on the UM/ L-3-Titan relativistic magnetron (100 MW in L-band, -300 kV, ~3 kGauss), have shown suppression of unwanted modes and major reduction in starting currents for the pi-mode. Data from continuing experiments on magnetic priming at the cathode will be presented, as well as preliminary data on magnetic priming at the cathode and anode. Azimuthally-varying, axial-magnetic-perturbations...
Magnetic priming consists of N/2 azimuthal perturbations applied to the axial magnetic field in an N-cavity magnetron. When employed on the UM/L-3-Titan, 6-cavity, relativistic magnetron (L-band, -300 kV, ~3 kGauss), magnetic priming has shown enhanced performance over uniform-B- field operation. Magnetic perturbations are imposed utilizing Mu-metal wires embedded in either the cathode or both the...
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