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Calabazas Creek Research Inc. (CCR) has examined the feasibility of a grid to control the magnitude and phase of magnetrons. A 650 MHz 100 kW CW magnetron was the focus of the study. Simulations were performed using VSIM, a Particle-in-Cell (PIC) code from Tech-X [1], and the trajectory code Beam Optics Analyzer (BOA) from CCR [2]. VSIM gave moderate resolution simulations of the self-consistent interaction...
The modeling, simulation, and analysis of a ladder type millimeter-wave traveling-wave tube (TWT) slow-wave structure (SWS) are presented. The simulation contains both cold and hot tests using VORPAL, a particle-in-cell (PIC) simulator that uses the conformal finite difference time domain (CFDTD) method. Beam design, dispersion, gain, and particle analysis of the ladder circuit are described.
The VORPAL finite-difference time-domain particle-in-cell simulation tool has traditionally been used for accelerator, electromagnetic, and plasma simulations. Approximately two years ago, a generalized PDE (partial differential equation) capability was added to the software, and we are now developing this capability to provide multi-physics simulations capability. Our project focus is on integrated...
We use FDTD PIC codes to simulation virtual cathode oscillators and employ three analytical models and an empirical estimation to determine the corresponding frequencies of oscillations to help understand the vircator.
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