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Calabazas Creek Research (CCR) is continuing development of Beam Optics Analyzer (BOA), an adaptive mesh, finite element, charged particle trajectory modeling tool for designing 3D electron devices. Several analysis types are available, including electrostatics, beam optics, electrostatic Particle-In-Cell, nonlinear magnetostatics, inhomogeneous Helmholtz and nonlinear heat transfer including radiation.
Modeling a gyrotron cavity in 3D and timedomain is very challenging due to the open-end features of cavity structure and higher-order mode excitation employed to achieve high efficiency. In this work, a conformal finite-difference time-domain (CFDTD) method is proposed to simulate a gyrotron cavity and a particle-in-cell (PIC) algorithm is used to describe a gyro electron beam. Our preliminary result...
The feasibility of designing a multistage depressed collector using conformal finite-difference time-domain particle-in-cell simulations has been studied. A feedback mechanism is implemented to provide stable time-dependent voltages for each stage of the depressed collector. An arbitrary space-time dependent spent beam distribution can be given in our time-domain simulations. We demonstrate the design...
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