Author: Lee, J. H.
Paper Title Page
WEPOY028 Laser Heater System Test at PAL-XFEL ITF 3048
  • J. H. Lee
    POSTECH, Pohang, Kyungbuk, Republic of Korea
  • J.H. Han, J.H. Hong, C.H. Kim, I.S. Ko, S.J. Lee
    PAL, Pohang, Kyungbuk, Republic of Korea
  Coherent x-ray photons are generated by a free electron laser (FEL). In PAL-XFEL, a photon beam with a 0.1 nm wavelength is generated from an electron bunch based on self-amplified spontaneous emission (SASE). An electron bunch with an uncorrelated energy spread in a level of 3 keV, which is generated from the photocathode RF gun, may be sensitive to longitudinal micro-bunching instability. The energy spread of an electron bunch can be increased to suppress the instability by Landau damping. In order to control the uncorrelated energy spread, a laser heater system, which has a chicane with four dipoles chicane and a 0.5 m long undulator, was installed in the injector test facility (ITF) of PAL. In this paper, we introduce the parameters of the laser heater and heating effect on the electron bunch.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPOY028  
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