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Roehrs, M.

Paper Title Page
MOOBAB01 Time-Resolved Phase Space Tomography at Flash Using a Transverse Deflecting RF-Structure 104
  • M. Roehrs, C. Gerth, H. Schlarb
    DESY, Hamburg
  To initiate Self-Amplification of Spontaneous Emission (SASE) in single-pass Free Electron Lasers (FEL), electron bunches with high peak current and small slice emittance and energy spread are necessary. At FLASH at DESY, this is accomplished by longitudinal bunch compression in two magnetic chicanes. The compression process may be accompanied by distortions from coherent synchrotron radiation and space charge forces. Their effect on the bunch properties can be studied with a vertically deflecting rf-structure (LOLA), which allows to measure the longitudinal phase space distribution and horizontal slice emittance of single bunches. In combination with tomographic methods the horizontal phase space distribution of time slices can be reconstructed. In this paper measurement results for SASE operation are presented and compared to simulations and bunch properties infered from the radiation signal.  
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