9 May 1988 Cusptron: A Compact High-Power Microwave Tube
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Proceedings Volume 0873, Microwave and Particle Beam Sources and Propagation; (1988) https://doi.org/10.1117/12.965086
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States
Cusptrons produce microwave radiation at the fundamental and harmonic electron cyclotron frequencies by the negative mass instability. A low-energy, axis-rotating beam of 28-30 kV, 0.8-3.5 A, 4 us, and 60 pps is used to generate a single RF-mode both in a circular cavity and in a six-vane circuit. In fundamental and second harmonic frequency generation with a circular circuit, the independently excited modes are TEll's and TE21's with radiation power of more than 1.8 kW and an electronic efficiency of approximately 7.5%. In high-harmonic frequency generation with a six-vane circuit, microwave radiation at 6.0 GHz (sixth harmonic) and 3.9 GHz (fourth harmonic) is also independently generated with more than 10.4 kW and 4.0 kW, respectively. In this case, corresponding electronic efficiencies are approximately 10.0 and 9.5%.
© (1988) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Won Narnkung, Won Narnkung, "Cusptron: A Compact High-Power Microwave Tube", Proc. SPIE 0873, Microwave and Particle Beam Sources and Propagation, (9 May 1988); doi: 10.1117/12.965086; https://doi.org/10.1117/12.965086

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