Author: Dehn, M.A.
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THPOW004 Pulse Response Measurements of NEA Photocathodes at Different Laser Wavelengths 3931
 
  • M.A. Dehn, K. Aulenbacher, V. Bechthold
    IKP, Mainz, Germany
 
  For high average electron beam currents the length of the electron bunches must match the acceptance of the accelerator. At Johannes Gutenberg-University Mainz we are able to measure the longitudinal pulse response of NEA photocathodes (GaAs) under photo excitation of different wavelengths. A time resolution of < 2 ps at a beam energy of 100 keV is achieved, furthermore, a high dynamic range allows to investigate long ranging tails of the response (longitudinal halo). This serves to identify the best possible operation mode for high current photo sources.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPOW004  
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