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3-D analysis of a rare earth linear wiggler for a free electron laser

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5 Author(s)
Kumada, M. ; Nat. Lab. for High Energy Phys., Ibaraki, Japan ; Nakata, T. ; Takahashi, N. ; Imada, A.
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It is reported that the performance of a high-power free-electron laser amplifier using a conventional linear permanent-magnet wiggler could be improved by modifying the wiggler to provide a focusing force to the electron beam in both the vertical and horizontal planes simultaneously. The authors discuss several wiggler configurations found using the three-dimensional finite-element method. The effects of the distribution of magnetization, the structure of the rectangular block, and the magnet height on the flux distribution were investigated.

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Magnetics, IEEE Transactions on  (Volume:24 ,  Issue: 2 )