Improved Model for Beam-Wave Interaction With Ohmic Losses and Reflections of Sheet Beam Traveling Wave Tubes
In this article, an improved model for the beam-wave interaction of sheet beam in traveling wave tubes (TWTs) considering ohmic losses and reflections is presented. The ohmic losses are obtained by field analysis and equivalent method. The space charge magnetic field is derived from the active Helmh...
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| Veröffentlicht in: | IEEE transactions on electron devices 2021-06, Vol.68 (6), p.2977-2983 |
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| container_title | IEEE transactions on electron devices |
| container_volume | 68 |
| creator | Tian, Hanwen Shi, Ningjie Wang, Zhanliang Wang, Shaomeng Duan, Zhaoyun Gong, Huarong Lu, Zhigang Paoloni, Claudio Feng, Jinjun Gong, Yubin |
| description | In this article, an improved model for the beam-wave interaction of sheet beam in traveling wave tubes (TWTs) considering ohmic losses and reflections is presented. The ohmic losses are obtained by field analysis and equivalent method. The space charge magnetic field is derived from the active Helmholtz's equation. An algorithm to obtain the S-matrix by the equivalent circuit method is presented. The relativistic Boris method is applied to accelerate macroparticles. The exchanged power is computed by the work the electromagnetic field applied to the macroparticles. The theoretical model is applied for validation to a {G} -band staggered double vane TWT and validated in comparison with CST Particle Studio and simulations without losses and reflections. The convergence of this algorithm is also discussed. The simulation time of the model is substantial faster than 3-D particle-in-cell (PIC) simulations. |
| doi_str_mv | 10.1109/TED.2021.3071212 |
| format | Article |
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The ohmic losses are obtained by field analysis and equivalent method. The space charge magnetic field is derived from the active Helmholtz's equation. An algorithm to obtain the S-matrix by the equivalent circuit method is presented. The relativistic Boris method is applied to accelerate macroparticles. The exchanged power is computed by the work the electromagnetic field applied to the macroparticles. The theoretical model is applied for validation to a <inline-formula> <tex-math notation="LaTeX">{G} </tex-math></inline-formula>-band staggered double vane TWT and validated in comparison with CST Particle Studio and simulations without losses and reflections. The convergence of this algorithm is also discussed. The simulation time of the model is substantial faster than 3-D particle-in-cell (PIC) simulations.</description><identifier>ISSN: 0018-9383</identifier><identifier>EISSN: 1557-9646</identifier><identifier>DOI: 10.1109/TED.2021.3071212</identifier><identifier>CODEN: IETDAI</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Algorithms ; Beam-wave interaction ; Blades ; Electromagnetic fields ; Equivalent circuits ; Harmonic analysis ; Integrated circuit modeling ; losses ; Macroparticles ; Magnetic circuits ; Metals ; Particle in cell technique ; reflections ; sheet beam traveling wave tube (TWT) ; Simulation ; Solid modeling ; Space charge ; Traveling wave tubes ; Traveling waves ; Wave interaction</subject><ispartof>IEEE transactions on electron devices, 2021-06, Vol.68 (6), p.2977-2983</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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The ohmic losses are obtained by field analysis and equivalent method. The space charge magnetic field is derived from the active Helmholtz's equation. An algorithm to obtain the S-matrix by the equivalent circuit method is presented. The relativistic Boris method is applied to accelerate macroparticles. The exchanged power is computed by the work the electromagnetic field applied to the macroparticles. The theoretical model is applied for validation to a <inline-formula> <tex-math notation="LaTeX">{G} </tex-math></inline-formula>-band staggered double vane TWT and validated in comparison with CST Particle Studio and simulations without losses and reflections. The convergence of this algorithm is also discussed. 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The ohmic losses are obtained by field analysis and equivalent method. The space charge magnetic field is derived from the active Helmholtz's equation. An algorithm to obtain the S-matrix by the equivalent circuit method is presented. The relativistic Boris method is applied to accelerate macroparticles. The exchanged power is computed by the work the electromagnetic field applied to the macroparticles. The theoretical model is applied for validation to a <inline-formula> <tex-math notation="LaTeX">{G} </tex-math></inline-formula>-band staggered double vane TWT and validated in comparison with CST Particle Studio and simulations without losses and reflections. The convergence of this algorithm is also discussed. 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| subjects | Algorithms Beam-wave interaction Blades Electromagnetic fields Equivalent circuits Harmonic analysis Integrated circuit modeling losses Macroparticles Magnetic circuits Metals Particle in cell technique reflections sheet beam traveling wave tube (TWT) Simulation Solid modeling Space charge Traveling wave tubes Traveling waves Wave interaction |
| title | Improved Model for Beam-Wave Interaction With Ohmic Losses and Reflections of Sheet Beam Traveling Wave Tubes |
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