Synchrotron radiation transmission by two coupled flat microchannel plates: new opportunities to control the focal spot characteristics.
X-ray diffraction
X-ray focusing
X-ray optics
X-ray waveguides
microchannel plate
Journal
Journal of synchrotron radiation
ISSN: 1600-5775
Titre abrégé: J Synchrotron Radiat
Pays: United States
ID NLM: 9888878
Informations de publication
Date de publication:
01 Mar 2022
01 Mar 2022
Historique:
received:
02
10
2021
accepted:
03
12
2021
entrez:
7
3
2022
pubmed:
8
3
2022
medline:
8
3
2022
Statut:
ppublish
Résumé
An improved theoretical model to calculate the focal spot properties of coherent synchrotron radiation (SR) soft X-ray beams by combining and aligning two microchannel plates (MCPs) is presented. The diffraction patterns of the radiation behind the MCP system are simulated in the framework of the electrodynamical model of the radiation emission from two-dimensional finite antenna arrays. Simulations show that this particular optical device focuses the soft X-ray radiation in a circular central spot with a radius of ∼4 µm. The study points out that such MCP-based devices may achieve micrometre and sub-micrometre spot sizes as required by many applications in the soft X-ray range. Finally, based on experimental and theoretical results of the radiation transmission by this MCP-based device, a new method to characterize the spatial properties of brilliant SR sources is discussed.
Identifiants
pubmed: 35254297
pii: S1600577521012893
doi: 10.1107/S1600577521012893
pmc: PMC8900856
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
355-362Subventions
Organisme : Helmholtz Zentrum Berlin, BESSY II
ID : Project n. 181-06366ST
Organisme : Helmholtz Zentrum Berlin, BESSY II
ID : Project n. 191-07912ST
Organisme : Elettra-Sincrotrone Trieste
ID : Grant No. 20180083
Organisme : Elettra-Sincrotrone Trieste
ID : Grant No. 20180241
Organisme : CALIPSOplus, EU Framework Program for Research
ID : Grant No. 730872
Informations de copyright
open access.
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