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The preliminary design and particle simulation of high-frequency structure for 310GHz extended interaction klystron (EIK) with folded waveguide (FWG) as the resonant cavity was presented in this paper The validity of FWG slow-wave structure (SWS) as EIK resonant cavity was demonstrated. The simulation indicated that FWG cavities have high characteristic impedance and can generate high gain amplification...
This paper described the 3D simulation method and results of electron gun and beam transport for the 0.14THz TWT with the help of CST. The hot test results show that the design of the electron beam optics system satisfied the need of the TWT. It bases the manufacture of the 0.14THz travelling wave tube.
The design of 220GHz folded waveguide (FWG) backward-wave oscillator (BWO) is presented in this paper. A prototype tube has been fabricated successfully though technical study and the backward oscillation has been observed in the hot test. The signal of peak power 36mW, frequency 229GHz is achieved with beam voltage 17.5kV, collected current 12.2mA, transmission rate 77% and working duty 1/20.
The design of electron-optical system for 0.14THz folded-waveguide traveling-wave tube was introduced in this paper. A prototype flow-through tube was welded to test beam transmission rate. The test result indicated that beam transmission rate reached 97% with electron gun voltage 14kV, current 24mA and beam channel diameter 0.26mm. The study certificated the design reliability of electron-optical...
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