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A planar electromagnet microwiggler for free electron lasers

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3 Author(s)
Stoner, R. ; Dept. of Phys., MIT, Cambridge, MA, USA ; Chen, S.C. ; Bekefi, G.

The authors have designed and tested an electromagnet planar microwiggler for use in free electron lasers (FELs), constructed of current conductors wound on ferromagnetic cores. A prototype with a period of 1 cm and a gap of 0.5 cm produced a peak field on axis in excess of 4.6 kG, with a linear B/H characteristic to about 3.2 kG. The field of each half-period of the wiggler is independently tunable by adjusting the current delivered to each, thus allowing for precision tuning and/or wiggler tapering. General scaling laws are employed to predict the performance of a geometrically similar design with a period of 5 mm

Published in:

Plasma Science, IEEE Transactions on  (Volume:18 ,  Issue: 3 )

Date of Publication:

Jun 1990

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