Accession Number : ADP005074

Title :   Phase Space Distribution of Brilliance of Undulator Sources,

Corporate Author : PARMA UNIV (ITALY) DIPT DI FISICA

Personal Author(s) : Coiesson,R. ; Walker,R. P.

Report Date : OCT 1985

Pagination or Media Count : 6

Abstract : As an optical source, an undulator can be described by its distribution of brilliance in phase space (angle and position in the transverse plane). This is a convolution of single particle diffraction pattern and electron beam distribution. Approximate peak brilliance and phase space widths are given. By analogy between brilliance and Wigner function, the depth field and diffraction widths are shown to be essentially the same thing. The peak brilliance is shown to have a broad maximum as a function of the beam beta function (beta approx = L/2pi) but is practically independent of beta at short wavelengths.

Descriptors :   *PARTICLE ACCELERATOR COMPONENTS, *LIGHT SOURCES, BRIGHTNESS, ELECTRON BEAMS, CONTROL, DIFFRACTION ANALYSIS, ELECTRON DIFFRACTION, PHASE SHIFT, RADIANCE

Distribution Statement : APPROVED FOR PUBLIC RELEASE