Title :
Performance characteristics, optimization, and error tolerances of a 4 nm FEL based on the SLAC linac
Author :
Kim, KJ ; Xie, M. ; Scharlemann, E.T. ; Pellegrini, C. ; Travish, C.
Author_Institution :
California Univ., Berkeley, CA, USA
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
Keywords :
beam handling techniques; electron accelerators; free electron lasers; linear accelerators; superradiance; wigglers; 20 GW; 2500 A; 4 nm; 4 nm FEL; 60 m; 7 GeV; FEL saturation length; FODO quadrupole system; FRED3D code; SASE; SLAC linac; Self Amplified Spontaneous Emission; TDA3D code; error tolerances; free electron laser; longitudinal bunch compression; misalignments; normalized RMS emittance; optimization; peak current; strong focusing; subpicosecond pulse; system gain; undulator; wiggler errors; Brightness; Electron beams; Electron emission; Free electron lasers; Laboratories; Laser theory; Linear particle accelerator; Physics; Spontaneous emission; Undulators;
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
DOI :
10.1109/PAC.1993.308555
