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2017•Unpublished venueRequires access

Simulated behavior of planar-helix slow-wave structure traveling-wave tube at various electron beam current

Yu Dian Lim, S. Wang, Beng Kang Tay, Sheel Aditya

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Abstract

Planar-Helix Slow-Wave Structure (PH-SWS) possesses promising potential in the miniaturization of Traveling-Wave Tubes (TWTs). To utilize this design, understanding in the effect of beam current on the operation of PH-SWS TWT is needed. In this study, we have performed PIC simulation on the reported PH-SWS TWT at various beam currents. From the simulation results, it is found that PH-SWS TWT experiences saturation in signal gain as the beam current reaches 25 mA. At the same time, electron collision on PH-SWS occurs when the beam current exceeds 20 mA.

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What this paper is about

Planar-Helix Slow-Wave Structure (PH-SWS) possesses promising potential in the miniaturization of Traveling-Wave Tubes (TWTs). To utilize this design, understanding in the effect of beam current on the operation of PH-SWS TWT is needed. In this study, we have performed PIC simulation on the reported PH-SWS TWT at various beam currents. From the simulation results, it is found that PH-SWS TWT experiences saturation in signal gain as the beam current reaches 25 mA. At the same time, electron collision on PH-SWS occurs when the beam current exceeds 20 mA.

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Available abstract

Planar-Helix Slow-Wave Structure (PH-SWS) possesses promising potential in the miniaturization of Traveling-Wave Tubes (TWTs). To utilize this design, understanding in the effect of beam current on the operation of PH-SWS TWT is needed. In this study, we have performed PIC simulation on the reported PH-SWS TWT at various beam currents. From the simulation results, it is found that PH-SWS TWT experiences saturation in signal gain as the beam current reaches 25 mA. At the same time, electron collision on PH-SWS occurs when the beam current exceeds 20 mA.

Key concepts: Traveling-wave tube, Cathode ray, Planar, Current (fluid), Beam (structure), Optics, Miniaturization, Helix (gastropod)

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