CERN Accelerating science

Article
Title	The Influence of the Seed Pulse Shape on the Output Performance of the BESSY Multi-stage HGHG-FEL
Author(s)	Meseck, Atoosa ; Abo-Bakr, Michael ; Kuske, Bettina
Affiliation	(BESSY GmbH, Berlin)
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. MOPOS06
Subject category	Accelerators and Storage Rings
Abstract	The BESSY soft X-ray FEL is planned as a High Gain Harmonic Generation (HGHG) FEL multi-user facility covering the VUV to soft X-ray spectral range. In the HGHG scheme, the properties of the radiation output are dominated by the characteristics of the laser seed. In this connection, the influence of the laser pulse shape on the output, in particular on the output spectrum is of interest. Simulation studies for the BESSY-HGHG-FELs are presented and the output performance for different shapes of the laser pulse is discussed.