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Article Dans Une Revue Physics of Plasmas Année : 2021

Time simulation of the nonlinear wave–particle interaction in meters-long traveling-wave tubes

Résumé

We propose a multi-particle self-consistent Hamiltonian (derived from an N-body description) that is applicable for periodic structures such as traveling-wave tubes (TWTs), gyrotrons, free-electron lasers, or particle accelerators. We build a 1D symplectic multi-particle algorithm to simulate the nonlinear wave-particle interaction in the time domain occurring in an experimental 3-meters long helix TWT. Our algorithm is efficient thanks to a drastic reduction model. A 3D helix version of our reduction model is provided. Finally, we establish an explicit expression of the electromagnetic power in the time domain and in non-monochromatic (non "continuous waveform") regime.
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Dates et versions

hal-03344311 , version 1 (14-09-2021)

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Damien F G Minenna, Khalil Aliane, Yves Elskens, Alexandre Poyé, Frédéric André, et al.. Time simulation of the nonlinear wave–particle interaction in meters-long traveling-wave tubes. Physics of Plasmas, 2021, 28 (9), pp.092110. ⟨10.1063/5.0059349⟩. ⟨hal-03344311⟩
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