Novel adiabatic bifilar helical wiggler entrance for free-electron laser applications
- 22 August 1988
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 53 (8) , 631-633
- https://doi.org/10.1063/1.99836
Abstract
A new adabatic bifilar helical wiggler entrance is presented. This introduction region is obtained by using a liquid shunt resistance to progressively shunt the current circulating in the wiggler helical windings. We have built a prototype wiggler and measured the field profiles obtained with this new scheme. The results agree very well with computer calculations and show that, indeed, one obtains a high quality adiabatic wiggler with this method.Keywords
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