Structure diagram of three-section waveguide cavity.
Cross-section diagram of field values for discrete points, point O(0,0) is the electron beam axis, point A(x A ,y A ) is an arbitrary point and x i ≤ x A ≤ x i +1, y j ≤ y A ≤ y j +1.
Field patterns of modes in the azimuthally corrugated waveguide based on CST simulation, cutoff frequencies of different modes are 123.6 GHz (mode 1), 260.0 GHz (mode 2), 273.5 GHz (mode 3), and 399.6 GHz (mode 4), respectively.
Beam wave coupling coefficient as a function of beam radius.
Starting current as a function of magnetic field.
Beam-wave interaction output power based on time dependent multi-mode simulation.
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