Author: Demirbas, U.
Paper Title Page
WEPAB158 Compact Terahertz-Powered Electron Photo-Gun 2983
 
  • T. Kroh, H. Çankaya, U. Demirbas, M. Fakhari, N.H. Matlis, M. Pergament, T. Rohwer
    CFEL, Hamburg, Germany
  • R.W. Aßmann, H. Dinter, M.J. Kellermeier
    DESY, Hamburg, Germany
  • M. Hemmer, F.X. Kärtner
    Deutsches Elektronen Synchrotron (DESY) and Center for Free Electron Science (CFEL), Hamburg, Germany
  • F.X. Kärtner
    The Hamburg Center for Ultrafast Imaging, University of Hamburg, Hamburg, Germany
 
  Funding: This work is supported by the Cluster of Excellence "CUI: Advanced Imaging of Matter" of the Deutsche Forschungsgemeinschaft (DFG) - EXC 2056 - project ID 390715994.
Novel ac­cel­er­a­tor con­cepts such as all-op­ti­cal THz based com­pact ac­cel­er­a­tors promise to en­able new sci­ence due to unique fea­tures such as re­duced tim­ing-jit­ter and im­proved space-charge broad­en­ing of the gen­er­ated elec­tron bunches. How­ever, multi-keV elec­tron photo-guns based on short sin­gle-cy­cle THz pulses for ac­cel­er­a­tion have not been demon­strated ex­per­i­men­tally so far. Here, we pre­sent a mod­u­lar THz-dri­ven elec­tron gun with both tun­able in­ter­ac­tion length and out­put ori­fice al­low­ing op­ti­miza­tion of the sub-mm in­ter­ac­tion vol­ume. First ex­trac­tion of multi-keV elec­trons is demon­strated and the pa­ra­me­ter space as well as re­sult­ing per­for­mance of the THz-dri­ven gun by vary­ing the tim­ing of the two sin­gle-cy­cle THz pulses and the UV photo-ex­ci­ta­tion pulse are ex­plored. Such com­pact gun pro­to­types are not only promis­ing as in­jec­tors for com­pact THz-based LINACs but also as source for ul­tra­fast elec­tron dif­frac­tion ex­per­i­ments.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB158  
About • paper received ※ 19 May 2021       paper accepted ※ 09 June 2021       issue date ※ 30 August 2021  
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