Author/Authors :
Murokh، نويسنده , , A and Agustsson، نويسنده , , R and Babzien، نويسنده , , M and Ben-Zvi، نويسنده , , I and Bertolini، نويسنده , , L and van Bibber، نويسنده , , K and Carr، نويسنده , , R and Cornacchia، نويسنده , , M and Frigola، نويسنده , , P and Hill، نويسنده , , J and Johnson، نويسنده , , E and Klaisner، نويسنده , , L and Le Sage، نويسنده , , G and Libkind، نويسنده , , M and Malone، نويسنده , , R and Nuhn، نويسنده , , H.-D and Pellegrini، نويسنده ,
Abstract :
VISA (Visible to Infrared SASE Amplifier) is a high-gain self-amplified spontaneous emission FEL, which achieved saturation at 840 nm within a single-pass 4-m undulator. A gain length shorter than 18 cm has been obtained, yielding the gain of 2×108 at saturation. The FEL performance, including spectral, angular, and statistical properties of SASE radiation, has been characterized for different electron beam conditions. The results are compared to 3-D SASE FEL theory and start-to-end numerical simulations of the entire injector, transport, and FEL system. Detailed agreement between simulations and experimental results is obtained over the wide range of the electron beam parameters.
