Author: Kimura, S.I.
Paper Title Page
Observation of Laser-Sliced Electron Bunch using a YBCO Detector at UVSOR-III  
  • E. Roussel, S. Bielawski, C. Evain, C. Szwaj
    PhLAM/CERCLA, Villeneuve d'Ascq Cedex, France
  • M. Adachi, M. Katoh, S.I. Kimura, T. Konomi
    UVSOR, Okazaki, Japan
  • M. Hosaka, Y. Takashima, N. Yamamoto
    Nagoya University, Nagoya, Japan
  • K.S. Ilin, J. Raasch, A. Scheuring, M. Siegel, P. Thoma
    KIT, Karlsruhe, Germany
  • H. Zen
    Kyoto University, Kyoto, Japan
  When the current of a storage ring is near the microbunching instability threshold, a strong burst of CSR instability may be seeded by an external laser pulse*. Here we present real time recordings of the coherent synchrotron radation (CSR) pulse shapes emitted by sliced electron bunch using a new technology based on YBCO thin film detector combined with the state-of-the-art oscilloscope. This allows to make measurements in real time of the sliced electron bunch dynamics over several turns. These experimental observations open a new way to make severe comparisons with existing and future models of the microbunching instability. Tests of a Vlasov-Fokker-Planck model are presented.
* Byrd et al. Phys. Rev. Lett. 97, 074802 (2006)