Author: Fernandez-Hernando, J.-L.     [Fernández-Hernando, J.L.]
Paper Title Page
TUPPP067 Collimation System Design and Performance for the SwissFEL 1753
 
  • F. Jackson, J.L. Fernández-Hernando
    STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
  • D. Angal-Kalinin
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
  • H.-H. Braun, S. Reiche
    Paul Scherrer Institut, Villigen, Switzerland
 
  Electron beam collimation in the SwissFEL is required for protection of the undulators against radiation damage and demagnetization. The design for the SwissFEL collimation for the hard X-ray undulator (Aramis) includes transverse collimation in the final accelerating linac sections, plus an energy collimator in a post-linac chicane. The collimation system must provide efficient protection of the undulator for various machine modes providing varied final beam energy to the undulator. The performance of the transverse and energy collimation design is studied in simulations including evaluation of the transverse collimation for various beam energies and the effect of grazing particles on the energy collimator. Collimator wakefields are also considered.  
 
TUPPR030 Thermo-mechanical Analysis of the CLIC Post-Linac Energy Collimators 1882
 
  • J. Resta-López
    IFIC, Valencia, Spain
  • J.L. Fernández-Hernando
    STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
  • A. Latina
    CERN, Geneva, Switzerland
 
  Funding: FPA2010-21456-C02-01
The post-linac energy collimation system of the Compact Linear Collider (CLIC) has been designed for passive protection of the Beam Delivery System (BDS) against mis-steered beams due to failure modes in the main linac. In this paper, a thermo-mechanical analysis of the CLIC energy collimators is presented. This study is based on simulations using the codes FLUKA and ANSYS when an entire bunch train hit the collimators. Different failure mode scenarios in the main linac are considered. Moreover, we discuss the results for different collimator materials. The aim is to improve the collimator design in order to make a reliable and robust design so that it survives without damage from the impact of a full bunch train in case of likely events generating energy errors.