Author: Podobedov, B.
Paper Title Page
TUPPP090 Studies of Controlled Laser-induced Microbunching Instability at Source Development Laboratory 1798
  • S. Seletskiy, B. Podobedov, Y. Shen, X. Yang
    BNL, Upton, Long Island, New York, USA
  We present the studies of controlled microbunching intentionally induced on the beam by the photocathode laser with modulated longitudinal profile. Varying the depth and frequency of longitudinal modulation of the laser pulse allowed us to observe the development of microbunching instability at BNL Source Development Laboratory (SDL) in the controlled environment. That allowed us to benchmark the model of the microbunching gain for the first time. In addition to that, we demonstrated for the first time a constructive work of a so-called longitudinal space charge amplifier, which in case under consideration can be utilized for enhancement of linac-based sources of THz radiation.  
WEPPR100 Short-Range Wakefields of Slowly Tapered Structures 3174
  • B. Podobedov
    BNL, Upton, Long Island, New York, USA
  We present new analytical results for short-range geometric wakefields of slowly tapered accelerator structures in 2D geometry.