Author: Le Pimpec, F.
Paper Title Page
TUPSO85 High Brightness Electron Beams from a Multi-filamentary Niobium-tin Photocathode 431
 
  • C. Vicario, A. Anghel, F. Ardana-Lamas, C.P. Hauri, F. Le Pimpec
    PSI, Villigen PSI, Switzerland
  • C.P. Hauri
    EPFL, Lausanne, Switzerland
 
  High-brightness electron sources are of fundamental interest for modern FELs. Inspired by the micro-structure of field emitter arrays, we propose a new type of metallic photo-cathode consisting of thousands of Nb3Sn micro-columns. With this metallic photo-cathode quantum efficiencies up to 0.5% are achieved under stable operation, and preliminary emittance measurements are presented.