A cantilevered liquid-nitrogen-cooled silicon mirror for the Advanced Light Source Upgrade.
cantilevered mirrors
cryogenics
high heat-load
liquid-nitrogen cooling
silicon mirrors
wavefront propagation
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 Sep 2020
01 Sep 2020
Historique:
received:
28
05
2020
accepted:
01
07
2020
entrez:
3
9
2020
pubmed:
3
9
2020
medline:
3
9
2020
Statut:
ppublish
Résumé
This paper presents a novel cantilevered liquid-nitrogen-cooled silicon mirror design for the first optic in a new soft X-ray beamline that is being developed as part of the Advanced Light Source Upgrade (ALS-U) (Lawrence Berkeley National Laboratory, USA). The beamline is optimized for photon energies between 400 and 1400 eV with full polarization control. Calculations indicate that, without correction, this design will achieve a Strehl ratio greater than 0.85 for the entire energy and polarization ranges of the beamline. With a correction achieved by moving the focus 7.5 mm upstream, the minimum Strehl ratio is 0.99. This design is currently the baseline plan for all new ALS-U insertion device beamlines.
Identifiants
pubmed: 32876587
pii: S1600577520008930
doi: 10.1107/S1600577520008930
pmc: PMC7467340
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1131-1140Subventions
Organisme : Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy
ID : DE-AC02-05CH11231
Informations de copyright
open access.
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