Title :
Recent Results from and Future Plans for the Visa II SASE FEL
Author :
Andonian, G. ; Agustsson, R. ; Frigola, P. ; Murokh, A. ; Pellegrini, C. ; Reiche, S. ; Rosenzweig, J. ; Travish, G. ; Babzien, M. ; Ben-Zvi, I. ; Litvinenko, V. ; Yakimenko, V. ; Boscolo, I. ; Cialdi, S. ; Flacco, A. ; Ferrario, M. ; Palumbo, L. ; Vicari
Author_Institution :
UCLA, Los Angeles, CA 90095, USA
Abstract :
The VISA II (Visible to Infrared SASE Amplifier) project, a consequent experiment to the succesful VISA enterprise, entails the use of a chirped electron beam to drive a high gain SASE FEL. The resulting ultra-short pulses will be characterized using an advanced FROG (Frequency Resolved Optical Gating) technique, as well as a double differential spectrum (angle/wavelength) diagnostic. Implementation of sextupole corrections to the longitudinal aberrations affecting the high energy-spread chirped beam during transport to the VISA undulator is studied. Start-end simulations, including radiation diagnostics, are discussed. Initial experimental results involving a highly chirped beam transported without sextupole corrections, the resulting high gain lasing, and computational analysis are briefly reported.
Keywords :
Chirp; Electron beams; Electron optics; Energy resolution; Frequency; Optical amplifiers; Optical pulses; Pulse amplifiers; Stimulated emission; Undulators;
Conference_Titel :
Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the
Print_ISBN :
0-7803-8859-3
DOI :
10.1109/PAC.2005.1591045
