TY  - EJOUR
AU  - Schneidmiller, Evgeny Alexanrdovich
AU  - Yurkov, Mikhail
TI  - Optimization of a High Efficiency FEL amplifier
IS  - DESY-14-161
M1  - PUBDB-2015-00034
M1  - DESY-14-161
M1  - arXiv:1410.5957
PY  - 2014
N1  - OA
AB  - The problem of an efficiency increase of an FEL amplifier is now of great practical importance. Technique of undulator tapering in the post-saturation regime is used at the existing x-ray FELs LCLS and SACLA, and is planned for use at the European XFEL, Swiss FEL,and PAL XFEL. There are also discussions on the future of high peak and average power FELs for scientific and industrial applications. In this paper we perform detailed analysis of the tapering strategies for high power seeded FEL amplifiers. Application of similarity techniques allows us to derive universal law of the undulator tapering.
LB  - PUB:(DE-HGF)25 ; PUB:(DE-HGF)29
UR  - https://bib-pubdb1.desy.de/record/205470
ER  -