Performance characteristics, optimization, and error tolerances of a 4 nm FEL based on the SLAC linac

K.-J Kim,C Pellegrini,M Xie,E.T Scharlemann,G Travish

doi:10.1109/pac.1993.308555

Performance characteristics, optimization, and error tolerances of a 4 nm FEL based on the SLAC linac

K.-J Kim, C Pellegrini + Show 3 more

https://doi.org/10.1109/pac.1993.308555

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Publication Date: May 17, 1993

Citations: 13

Affiliation: Lawrence Berkeley National Laboratory, University of California, Berkeley, University of California, Los Angeles, Lawrence Livermore National Laboratory

#Free Electron Laser #SLAC Linac + Show 8 more

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Abstract

A 4 nm free electron laser (FEL) operating in Self Amplified Spontaneous Emission (SASE), and using the SLAC linac as a driver has been extensively studied using the FRED3D and TDA3D codes. Using a 7 GeV beam with a normalized RMS emittance of 3 mm-mrad and a peak current of 2500 A, obtained by longitudinal bunch compression, the FEL can provide about 20 GWatt of peak power, in a subpicosecond pulse. The FEL saturation length is about 60 m. Strong focusing in both planes is provided throughout the undulator by a FODO quadrupole system. We have studied the system gain, its optimization and FEL tolerance to beam parameter changes, wiggler errors and misalignments. >

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