Short Period Undulators - Design and Performance,
ENEA FRASCATI (ITALY) CENTRO RICHERCHE ENERGIA
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The design and optimization of short period lambda sub u somewhat 20 mm undulators is discussed. It is shown that such undulators are preferably realized by permanent magnet arrays in the hybrid configuration. Evaluation of the magnetic field of the hybrid configuration by the scalar potential method is reviewed and useful approximations for the short period region are derived.