Overmoded GW-class surface-wave microwave oscillator |
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| Authors: | Vlasov AN Shkvarunets AG Rodgers JC Carmel Y Antonsen TM Jr Abuelfadl TM Lingze D Cherepenin VA Nusinovich GS Botton M Granatstein VL |
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| Institution: | Sci. Applications Int. Corp., McLean, VA; |
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| Abstract: | Results of theoretical and experimental studies of a GW-class, large diameter microwave oscillator are presented. The device consists of a large cross-section (overmoded), slow-wave structure with a unique profile of wall radius specifically designed to support surface waves and to provide a strong beam-wave coupling at moderate voltage (500 kV), an internal adjustable microwave reflector, a coaxial microwave extraction section, and a coaxial magnetically insulated field emission electron gun. In preliminary experiments carried out at 8.3 GHz, the power level exceeding 0.5 GW and efficiency of 15% have been measured calorimetrically |
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