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The implementation of 3D undulator fields in the unaveraged FEL simulation code Puffin

Henderson, James Robert and McNeil, Brian and Campbell, Lawrence (2015) The implementation of 3D undulator fields in the unaveraged FEL simulation code Puffin. In: 36th International Free Electron Laser Conference. Paul Scherrer Insitut, p. 416. ISBN 978-3-95450-133-5

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Abstract

The FEL simulation code Puffin is modified to include 3D magnetic undulator fields. Puffin, having previously used a 1D undulator field, is modified to accommodate general 3D magnetic fields. Both plane and curved pole undulators have been implemented. The electron motion for both agrees with analytic predictions.