Author: Gensch, M.
Paper Title Page
MOOBNO04
First Light from the ELBE THz Radiation Facility  
 
  • U. Lehnert, C. Bauer, M. Gensch, B.W. Green, S. Kovalev, M. Kuntzsch, W. Seidel
    HZDR, Dresden, Germany
  • T. Golz, A. Shemmary, N. Stojanovic
    DESY, Hamburg, Germany
 
  A new super-radiant THz source has successfully been put into operation at the ELBE radiation source. The facility combines a broad-band transition or diffraction radiation source with an 8 period undulator. Both sources are inherently synchronized by generating radiation from the same electron bunch. This, together with the possibility to operate the machine in CW with repetition rates of 100kHz to 13MHz makes the new source a very versatile tool for a broad range of experiments, particularly for THz based electron bunch diagnostics. With the low beam energy (our first experiments were done at 28 MeV) the bunch compression becomes a major challenge. We have generated coherent radiation with wavelengths as short as 200 microns indicating a compression of a major fraction of the bunch into a pulse with 200 fs bunchlength. Our design target is a compression down to 100 fs and to reach 100 micron wavelength (3THz).  
slides icon Slides MOOBNO04 [3.602 MB]  
 
WEIBNO01 Super-radiant Linac-based THz Sources in 2013 474
 
  • M. Gensch
    HZDR, Dresden, Germany
 
  There is a growing interest in THz and far infrared light sources for use in material studies. Both coherent radiative sources (CSR, COTR, etc.) and FEL sources have been developed in the last few years to address this need. This talk will describe recent developments in this growing field.  
 
WEOBNO04
Integration of Accelerator Based IR/THz Source for Pump Probe Experiments in the Infrastructure of the European XFEL  
 
  • M.V. Yurkov, E. Schneidmiller
    DESY, Hamburg, Germany
  • M. Gensch
    HZDR, Dresden, Germany
  • M. Izquierdo
    XFEL. EU, Hamburg, Germany
  • M. Krasilnikov, F. Stephan
    DESY Zeuthen, Zeuthen, Germany
 
  We analyze the scope of pump-probe experiments at the European XFEL involving IR/THz and x-ray pulses. Different experiments impose different requirements on the properties of the IR/THz source like wavelength range, spectral properties, intensity, pulse duration, polarization, synchronization capabilities, repetition rate, etc. Our previous analysis have shown that the most universal solution of the problem of the IR/THz radiation source is an accelerator based source. The electron accelerator is similar to that operating at the PITZ facility. It consists of an rf gun and a warm (or cold) accelerating section. Powerful, coherent radiation with prescribed temporal, spectral and polarization properties is generated in a set of radiators like undulators (using mechanism of SASE FEL for short wavelength and coherent undulator radiation for long wavelength), edge radiators, OTR foils, diffraction radiators. Location of the electron source close to the experiment would allow performing of pump-probe experiments involving also ultrashort electron pulses. In this paper we discuss problems of the integration of the accelerator based THz source into infrastructure of the European XFEL.  
slides icon Slides WEOBNO04 [3.339 MB]