Yurkov, M. V.

Paper	Title	Page
PLT15	Attosecond Pulses in XFELs
	E. Saldin, E. Schneidmiller, M. V. Yurkov DESY, Hamburg
	We present an overview of schemes allowing production of attosecond X-ray pulses in SASE FEL. Up to now six different schemes were proposed for potential realization at LCLS and European XFEL. Thorough analysis of potential advantages and possible physical and technical limitations is given as well.
	Slides
WG121	Statistical Optics and Partially Coherent X-Ray Beams in Third Generation Light Sources
	G. Geloni, E. Saldin, E. Schneidmiller, M. V. Yurkov DESY, Hamburg
	A theory of transverse coherence properties of Undulator Radiation is described, based on a Statistical Optics approach, which accounts for the influence of the electron beam emittance. We propose a technique to calculate the cross-spectral density from undulator sources when quasi-homogeneous approximation of the source fails. Also, we find the region of applicability of the quasi-homogeneous model and we present an analytical expression for the cross-spectral density which is valid in free space. This expression characterizes the light source. In particular, it can be used to describe a virtual source which, put at a particular position along the photon beamline, produces, at any distance, the same field of the undulator device. Specification of the cross-spectral density at the virtual source position, together with Fourier Optics techniques, is the basis for any subsequent description of the propagation of the radiation beam through an optical imaging system.
	Slides
WG305	Operational Experience and Recent Results from FLASH
	E. Saldin, E. Schneidmiller, M. V. Yurkov DESY, Hamburg
	Experience from comissioning and operating the user facility at FLASH is discussed. Recent results (lasing at 13 nm) are presented.
	Slides
WG513	Status of the Optical Replica Synthesizer Project at DESY
	V. G. Ziemann UU/ISV, Uppsala M. Larsson, P. van der Meulen FYSIKUM, AlbaNova, Stockholm University, Stockholm E. Saldin, H. Schlarb, E. Schneidmiller, M. V. Yurkov DESY, Hamburg
	We present the status of the optical replica synthesizer project to measure ultra-short electron bunches in the VUV-FEL. The device is based on the creation and diagnosis of a coherent light pulse that mimics the longitudinal profile of the electron bunch as described by Saldin, et.al. in Nuclear Inst. and Meth. A 539 (2005) 449.
	Slides