Fabrication of a W-band sheet beam extended interaction klystron (EIK)

Pasour, John; Wright, E. L.; Nguyen, Khanh; Balkcum, Adam; Levush, B.

doi:10.1109/ivec.2012.6262106

Cited by 5 publications

(1 citation statement)

References 4 publications

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“…In general, the electric field of middle gap is higher than the electric field of the sides, but the field amplitude difference is very small in input cavity of klystron. In addition, research results of [11] and [16] show that the electric field of every gap is able to reach same in the multigap barbell-shaped resonant cavity, so that we set the same electric field of every gap approximately to simplify the derivation of electron load conductance.…”

Section: B Derivation Of Electron Load Conductance Of Three-gap Extementioning

confidence: 99%

Analysis and Simulation of a Multigap Sheet Beam Extended Interaction Relativistic Klystron Amplifier

Zhao

Huang

et al. 2015

IEEE Trans. Plasma Sci.

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To improve the output power and electron efficiency and broaden the operating bandwidth, the three-gap extended output cavity was used in the relativistic klystron to replace the single-gap output cavity. The high-frequency characteristics of the three-gap extended cavity were studied. The electron load conductance was derived and corrected based on the theory of relativity, by which a more accurate relation of electron load conductance versus transmit angle can be obtained. The characteristic impedance is three times bigger than that of the single-gap cavity under the case of the 2π mode, which can improve the M 2 (R/ Q) and the beam-wave interaction efficiency. The model of sheet beam klystron (SBK) is comprised of three-gap input cavity, two-gap first idler, three-gap second idler cavity, and three-gap output cavity. The 3-D particle-in-cell simulation results show that for a 500 kV, 1 kA, 40.134 GHz, and 20 W input power, the SBK is capable of generating an output power higher than 142 MW with the gain of 68.5 dB, maximum interaction efficiency of 28.4%, and 3-dB bandwidth of 240 MHz.Index Terms-Extended interaction, particle-in-cell (PIC) simulation, relativistic klystron, sheet beam.

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Section: B Derivation Of Electron Load Conductance Of Three-gap Extementioning

confidence: 99%

Analysis and Simulation of a Multigap Sheet Beam Extended Interaction Relativistic Klystron Amplifier

Zhao

Huang

et al. 2015

IEEE Trans. Plasma Sci.

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Klystron

Ding

Zhang

Wang

et al. 2015

Wiley Encyclopedia of Electrical and Electronics Engineering

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Klystron is a type of microwave vacuum electron device, which converts the electron energy into microwave energy. The klystron has maximum peak power and average power comparing with other microwave vacuum electron devices. The klystron has widespread applications on accelerator, radar system, communication and TV broadcast system, RF heater, and so on. Since Varian brothers invented the first klystron, several hundred types of klystrons have been developed in recent 70 years. The art of technical state and the trend of the klystron are described briefly in this paper. In future, klystron would be developed into higher power, higher frequency, and improved continually on bandwidth, efficiency, and lifetime.

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