CERN Accelerating science

Article
Title	FEL Simulation Code for Undulator Performance Estimation
Author(s)	Tanaka, Takashi
Affiliation	(RIKEN Spring-8 Harima, Hyogo)
Publication	2004
In:	26th International Free Electron Laser Conference and 11th FEL User Workshop 2004, Trieste, Italy, 29 Aug - 3 Sep 2004, pp.e-proc. TUPOS19
Subject category	Accelerators and Storage Rings
Abstract	In an FEL project based on the principle of SASE, a long undulator with a good field quality should be installed to ensure saturation. The performance of the undulator as a (spontaneous) synchrotron light source is represented by phase errors as well as the trajectory straightness. In addition, the synchrotron radiation from an undulator is easily calculated by Fourier transforming the electric field generated by an electron passing through the undulator field. On the other hand, an FEL simulation should be carried out with the actual magnetic field taken into account in order to estimate the undulator performance as an FEL driver. We have recently developed an FEL simulation code for such a purpose, the details of which will be presented in this paper.