Simulation and design of an X-band overmoded input cavity |
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| Authors: | Yang Wu Yong-Dong Chen De-Kui Zhao |
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| Affiliation: | 1. Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang 621900, China2. Sciebce and Technology on High Power Microwave Laboratory, Mianyang 621900, China3. Sichuan University of Science and Engineering, Zigong 643000, China |
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| Abstract: | The RF input cavity is an important component for velocity-modulating types of microwave device,providing velocity modulation and density modulation.Conventional RF input cavities,however,encounter the problem of power capacity in the high frequency band due to the scaling law of the working frequency and device size.In this paper,an X-band overmoded input cavity is proposed and investigated.A resonant reflector is employed to reflect the microwave and isolate the input cavity from the diode and RF extractor.The resonant property of the overmoded input cavity is proved by simulations and cold tests,with PIC simulation showing that with a beam voltage of 600 kV and current of 7 kA,an input power of 90 kW is sufficient to modulate the beam with a modulation depth of 3%. |
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| Keywords: | X-band overmoded input cavity relativistic klystron amplifier phase-locked oscillator |
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