Record Details

Title:
Effects of energy spread on brightness and coherence of undulator sources
Affiliation(s):
EuXFEL staff, Other
Author group:
Simulation of Photon Fields
Keyword(s):
Topic:
Scientific area:
Abstract:
The (spectral) brightness for partially transverse coherent sources such as synchrotron radiation and free-electron laser sources can be defined as the maximum of the Wigner distribution. Then, the brightness includes information on both coherence and wavefront characteristics of the radiation field. For undulator sources, it is customary to approximate the single-electron electric field at resonance with a Gaussian beam, leading to great simplifications. Attempts to account for the modified spatial and angular profile of the undulator radiation in the presence of detuning due to energy spread, currently build on the simplified brightness expression derived under the assumption of Gaussian beams. The influence of energy spread on undulator radiation properties is becoming important in view of diffraction-limited rings with ultralow emittance coming on-line. Here the effects of energy spread on the brightness of undulator radiation at resonance are discussed, as well as relevant relations with coherence properties.
Imprint:
2018
Journal Information:
Journal of Synchrotron Radiation, 25 (5), 1335-1345 (2018)
Related external records:
Related internal records:
Language(s):
English


Export


 Record created 2018-08-29, last modified 2019-01-30

Fulltext:
Download fulltext
PDF

Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)