The growth and saturation of spontaneous emission and coherent radiation in a long
undulator are studied by use of the 3D Maxwell-Klimontovich equation. Electron correlation …

The following analysis develops a classical theory of how a signal evolves from the initial
incoherent spontaneous emission in long undulators. The theory is based on the coupled …

We review the recent progress in our understanding of the self-amplified spontaneous
emission (SASE), emphasizing the SASE. Accelerator technologies producing high …

We report the results of preliminary studies of a 2 to 4 nm SASE FEL, using a photoinjector to
produce the electron beam, and the SLAC linac to accelerate it to an energy up to 10 GeV …

The well developed theory of short wavelength SASE-FELs is now being used to design two
X-ray lasers, LCLS and Tesla-FEL. However, the physics and technology of these projects …

High-gain free-electron lasers (FELs) are driven by short, high-charge density electron
beams as only produced at dedicated single pass or recirculating linear accelerators. We …

Storage ring FELs have operated successfully in the low-gain regime using optical cavities.
Discussions of a high-gain FEL in a storage ring typically involve a special bypass to …

Spatially periodic arrays of magnets were installed and tested on linear accelerators as early
as 1953. A fresh start was made in this area in 1976 when a helical undulator1 was installed …

We discuss the production of x rays from relativistic electron beams using synchrotron
radiation, free electron lasers, and Compton backscattering of intense laser beams. We …

44 Nuclear Instruments and Methods in Physics Research A261 (1987) 44-53 North-Holland,
Amsterdam BRIGHTNESS AND COHERENCE OF SY Page 1 44 Nuclear Instruments and …