| Issue |
EPL
Volume 119, Number 3, August 2017
|
|
|---|---|---|
| Article Number | 34004 | |
| Number of page(s) | 5 | |
| Section | Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics | |
| DOI | https://doi.org/10.1209/0295-5075/119/34004 | |
| Published online | 25 October 2017 | |
Coherent modes of X-ray beams emitted by undulators in new storage rings
ESRF - The European Synchrotron - 71 Avenue des Martyrs, Grenoble, France
Received: 23 June 2017
Accepted: 23 September 2017
Synchrotron radiation emitted by electrons passing through an undulator placed in a storage ring is decomposed in coherent modes. The case of ultimate storage rings where the electron emittance is comparable to the emittance of the photon fan is analyzed by means of the cross spectral density and the coherent mode spectrum. The proposed method permits naturally the statistical analysis and propagation of the cross spectral density along the beamline optics. The coherence properties of the X-ray beam at any point of the beamline are completely given in terms of the eigenvalues and coherent modes of the cross spectral density.
PACS: 41.60.Ap – Synchrotron radiation / 42.25.Kb – Coherence
© EPLA, 2017
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