Phasing of the insertion devices at APS FEL project

Vasserman, I. B.; Vinokurov, N. A.; Dejus, R. J.
June 2000
AIP Conference Proceedings;2000, Vol. 521 Issue 1, p368
Academic Journal
The amplifier part of the free-electron laser (FEL) at the Advanced Photon Source at Argonne National Laboratory consists of 12 identical 2.7-meter-long sections. The break length between undulators must provide proper phasing and space necessary for the diagnostic system. Proper phasing is an essential parameter affecting the performance of the amplifier. Different options of phasing were examined. The approach implemented provides sufficient flexibility. A special technique to adjust the break length in a range of about ±2 cm has been demonstrated. © 2000 American Institute of Physics.


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