Author: Ottmar, A.V.
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MOPA14 Electron Spectrometer for a Low Charge Intermediate Energy LWFA Electron Beam Measurement 57
  • A.V. Ottmar, Yu.I. Maltseva, T.V. Rybitskaya
    BINP SB RAS, Novosibirsk, Russia
  • V. Gubin
    Institute of Laser Physics, SB RAS, Novosibirsk, Russia
  The Laser-driven Compton light source is under development in ILP SB RAS in collaboration with BINP SB RAS. Electron spectrometer for measurement of LWFA electron beam with energy in the range 10-150 MeV and bunch charge 1-10 pC is presented. Spectrometer based on permanent magnet and luminous screen with CCD registrar and this geometry was optimized for best measurements resolution in compromise with size limitations. Preliminary collimation of electron beam allows achieving energy resolution up to 5-10 % of top limit. System has been tested at the VEPP-5 linear electron accelerator and obtained results correspond to design objectives. Sensitivity of beam transverse charge density was experimentally fixed at 0.03 pC/mm2, it is practically sufficient for our LWFA experiments.  
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