Exploiting Periodicity and Other Structural Symmetries in Field Solvers
نویسنده
چکیده
._ leads to faster and/or more accurate solutions. Of particular interest to the accelerator community are periodic structures. Quasi-periodic boundary conditions allow modes with any desired phase advance given a single cell of the periodic structure. For symmetric periodic structures there is a variation which requires only a half cell of the periodic structure. These boundary conditions can also be used for rotationally periodic structures, such as cross-field amplifiers and magnetrons. Boundary conditions for some other symmetries, such as reflection symmetry about a plane and about a point, will also be reviewed.
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