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Chao, A.

Paper Title Page
TUPPH041 Three-dimensional Analysis of Longitudinal Space Charge Microbunching Starting from Shot Noise 338
 
  • D. F. Ratner
    Stanford University, Stanford, Califormia
  • A. Chao, Z. Huang
    SLAC, Menlo Park, California
  
  The commissioning of the Linac Coherent Light Source injector shows unexpected coherent optical transition radiation (COTR) for an uncompressed electron bunch downstream of a dog-leg transport line*. In this paper, we develop a three-dimensional analysis of the longitudinal space charge microbunching in attempting to explain the phenomenon. The analysis takes into account the transverse correlation of the longitudinal space charge field due to shot-noise startup** and nonlinear transport optics. We also discuss its applications to the LCLS COTR observations***.

* R. Akre et al., PRST-AB 11, 030703 (2008).
** M. Venturini, PRST-AB 11, 034401 (2008).
*** H. Loos et al., these proceedings.