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RIS citation export for SUSPF012: Power Enhancement of Free-Electron Lasers Oscillators With the Natural Gradient of a Planar Undulators

TY - CONF
AU - Zhao, Z.
AU - Chen, L.J.
AU - Jia, Q.K.
AU - Li, H.T.
ED - Koscielniak, Shane
ED - Satogata, Todd
ED - Schaa, Volker RW
ED - Thomson, Jana
TI - Power Enhancement of Free-Electron Lasers Oscillators With the Natural Gradient of a Planar Undulators
J2 - Proc. of IPAC2018, Vancouver, BC, Canada, April 29-May 4, 2018
C1 - Vancouver, BC, Canada
T2 - International Particle Accelerator Conference
T3 - 9
LA - english
AB - Transverse Gradient Undulator (TGU) has been proposed with the initial purpose of mitigating the gain degradation in free electron laser (FEL) oscillators driven by beams with a large energy spread. However, a special-designed TGU with a fixed transverse gradient is required to enhance the gain. In this paper, we investigate using the natural field gradient of a normal planar undulator instead of a TGU to enhance the FEL oscillator (FELO) power. In this method, the beam is first vertically dispersed by a dogleg and then the dispersed beam passes through a normal undulator with a vertical off-axis orbit. Theoretical analysis and numerical simulation based on parameters of FELiChEM are presented. It demonstrates that this scheme can enhance the FEL power with careful optimization of dispersion strength and vertical beam orbit offset, especially when the energy spread is relatively large.
PB - JACoW Publishing
CP - Geneva, Switzerland
SP - 4632
EP - 4634
DA - 2018/06
PY - 2018
SN - 978-3-95450-184-7
DO - 10.18429/JACoW-IPAC2018-THPMK138
UR - http://jacow.org/ipac2018/papers/thpmk138.pdf
ER -