Author: Potter, A.T.
Paper Title Page
TUPAB125 Studies of Particle Losses From the Beam in the EU-XFEL Following Scattering by a Slotted Foil 1681
 
  • A.T. Potter, A. Wolski
    The University of Liverpool, Liverpool, United Kingdom
  • W. Decking, S. Liu
    DESY, Hamburg, Germany
  • F. Jackson
    STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
 
  One technique for producing short radiation pulses in an FEL involves the use of a slotted foil in a bunch compressor. However, the scattering of particles from the foil can lead to increased particle losses and the generation of secondary particles. This is a particular concern for high rep-rate FELs, such as the European XFEL, where there are plans to implement the slotted-foil technique for short pulse generation. The study reported here aims to characterise the impact of a slotted foil in the European XFEL on the radiation dose in the front section of one of the undulators. Simulations were performed using BDSIM: this code tracks primary particles along the beamline, models the interaction between particles and accelerator components and tracks secondary particles produced by these interactions. The results indicate the amount of energy deposited in the front section of one of the FEL undulators, and provide a basis for optimisation of the collimation system to keep the energy deposition and radiation doses within acceptable limits.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB125  
About • paper received ※ 19 May 2021       paper accepted ※ 10 June 2021       issue date ※ 28 August 2021  
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