Design of a superconducting wiggler for the PLS

The physical engineering design of a 7.5 Tesla superconducting wiggler for the PLS is described. The design is based on three parallel superconducting dipoles. The field is produced by six racetrack NbTi-coils assembled symmetrically above and below the vacuum chamber. The current density for the central pole was chosen to obtain optimal field-current characteristics within the conductor packages. The use of iron poles and return yokes makes it possible to produce higher fields than the corresponding values when no iron is used.<
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