V. I. R. Niculescu National Institute for Laser, Plasma and Radiation Physics (Romania) Vasile D. Babin National Institute of Research and Development for Optoelectronics (Romania) Mihaela Dan Babes-Bolyai Univ. (Romania)
A new theoretical model of a wiggler for free electron lasers in an altered helical magnetic field is presented. The wiggler is a helicoidal widding having a simultaneous radial sinusoidal modulation. Analytical approximate expressions of the magnetic field components using multiquadratic basis functions were obtained. This new treatment of the problem could be extended to the nonlinear dinamical analysis of the electrons in the studied structure.
V. I. R. Niculescu,
Vasile D. Babin,
"Helical radial sinusoidal modulated wiggler", Proc. SPIE 4430, ROMOPTO 2000: Sixth Conference on Optics, (29 June 2001); doi: 10.1117/12.432831; https://doi.org/10.1117/12.432831