CERN Accelerating science

Article
Title	Optimized Bunch Compression System for the European XFEL
Author(s)	Limberg, Torsten ; Balandin, Vladimir ; Brinkmann, Reinhard ; Decking, Winfried ; Dohlus, Martin ; Flöettmann, Klaus ; Kim, Yujong ; Schneidmiller, Evgeny
Affiliation	(DESY, Hamburg)
Publication	2005
In:	21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.1236
Subject category	Accelerators and Storage Rings
Abstract	The European XFEL bunch compressor system has been optimized for greater flexibility in parameter space. Operation beyond the XFEL design parameters is discussed in two directions: achieving the uppermost number of photons in a single pulse on one hand and reaching the necessary peak current for lasing with a pulse as short as possible on the other. Results of start-to-end calculations including 3D-CSR effects, space charge forces and the impact on wake fields demonstrate the potential of the XFEL for further improvement or, respectively, its safety margin for operation at design values.