Cargando…

The soft X-ray and XUV split-and-delay unit at beamlines FL23/24 at FLASH2

A split-and-delay unit for the extreme ultraviolet and soft X-ray spectral regions has been built which enables time-resolved experiments at beamlines FL23 and FL24 at the Free-electron LASer in Hamburg (FLASH). Geometric wavefront splitting at a sharp edge of a beam splitting mirror is applied to s...

Descripción completa

Detalles Bibliográficos
Autores principales: Dreimann, Matthias, Wahlert, Frank, Eckermann, Dennis, Rosenthal, Felix, Roling, Sebastian, Reiker, Tobias, Kuhlmann, Marion, Toleikis, Sven, Brachmanski, Maciej, Treusch, Rolf, Plönjes, Elke, Siemer, Björn, Zacharias, Helmut
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10000806/
https://www.ncbi.nlm.nih.gov/pubmed/36891862
http://dx.doi.org/10.1107/S1600577523000395
_version_ 1784903972487692288
author Dreimann, Matthias
Wahlert, Frank
Eckermann, Dennis
Rosenthal, Felix
Roling, Sebastian
Reiker, Tobias
Kuhlmann, Marion
Toleikis, Sven
Brachmanski, Maciej
Treusch, Rolf
Plönjes, Elke
Siemer, Björn
Zacharias, Helmut
author_facet Dreimann, Matthias
Wahlert, Frank
Eckermann, Dennis
Rosenthal, Felix
Roling, Sebastian
Reiker, Tobias
Kuhlmann, Marion
Toleikis, Sven
Brachmanski, Maciej
Treusch, Rolf
Plönjes, Elke
Siemer, Björn
Zacharias, Helmut
author_sort Dreimann, Matthias
collection PubMed
description A split-and-delay unit for the extreme ultraviolet and soft X-ray spectral regions has been built which enables time-resolved experiments at beamlines FL23 and FL24 at the Free-electron LASer in Hamburg (FLASH). Geometric wavefront splitting at a sharp edge of a beam splitting mirror is applied to split the incoming soft X-ray pulse into two beams. Ni and Pt coatings at grazing incidence angles have been chosen in order to cover the whole spectral range of FLASH2 and beyond, up to hν = 1800 eV. In the variable beam path with a grazing incidence angle of ϑ(d) = 1.8°, the total transmission (T) ranges are of the order of 0.48 < T < 0.84 for hν < 100 eV and T > 0.50 for 100 eV < hν < 650 eV with the Ni coating, and T > 0.06 for hν < 1800 eV for the Pt coating. For a fixed beam path with a grazing incidence angle of ϑ(f) = 1.3°, a transmission of T > 0.61 with the Ni coating and T > 0.23 with a Pt coating is achieved. Soft X-ray pump/soft X-ray probe experiments are possible within a delay range of −5 ps < Δt < +18 ps with a nominal time resolution of t (r) = 66 as and a measured timing jitter of t (j) = 121 ± 2 as. First experiments with the split-and-delay unit determined the averaged coherence time of FLASH2 to be τ(c) = 1.75 fs at λ = 8 nm, measured at a purposely reduced coherence of the free-electron laser.
format Online
Article
Text
id pubmed-10000806
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher International Union of Crystallography
record_format MEDLINE/PubMed
spelling pubmed-100008062023-03-11 The soft X-ray and XUV split-and-delay unit at beamlines FL23/24 at FLASH2 Dreimann, Matthias Wahlert, Frank Eckermann, Dennis Rosenthal, Felix Roling, Sebastian Reiker, Tobias Kuhlmann, Marion Toleikis, Sven Brachmanski, Maciej Treusch, Rolf Plönjes, Elke Siemer, Björn Zacharias, Helmut J Synchrotron Radiat Beamlines A split-and-delay unit for the extreme ultraviolet and soft X-ray spectral regions has been built which enables time-resolved experiments at beamlines FL23 and FL24 at the Free-electron LASer in Hamburg (FLASH). Geometric wavefront splitting at a sharp edge of a beam splitting mirror is applied to split the incoming soft X-ray pulse into two beams. Ni and Pt coatings at grazing incidence angles have been chosen in order to cover the whole spectral range of FLASH2 and beyond, up to hν = 1800 eV. In the variable beam path with a grazing incidence angle of ϑ(d) = 1.8°, the total transmission (T) ranges are of the order of 0.48 < T < 0.84 for hν < 100 eV and T > 0.50 for 100 eV < hν < 650 eV with the Ni coating, and T > 0.06 for hν < 1800 eV for the Pt coating. For a fixed beam path with a grazing incidence angle of ϑ(f) = 1.3°, a transmission of T > 0.61 with the Ni coating and T > 0.23 with a Pt coating is achieved. Soft X-ray pump/soft X-ray probe experiments are possible within a delay range of −5 ps < Δt < +18 ps with a nominal time resolution of t (r) = 66 as and a measured timing jitter of t (j) = 121 ± 2 as. First experiments with the split-and-delay unit determined the averaged coherence time of FLASH2 to be τ(c) = 1.75 fs at λ = 8 nm, measured at a purposely reduced coherence of the free-electron laser. International Union of Crystallography 2023-02-15 /pmc/articles/PMC10000806/ /pubmed/36891862 http://dx.doi.org/10.1107/S1600577523000395 Text en © Matthias Dreimann et al. 2023 https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
spellingShingle Beamlines
Dreimann, Matthias
Wahlert, Frank
Eckermann, Dennis
Rosenthal, Felix
Roling, Sebastian
Reiker, Tobias
Kuhlmann, Marion
Toleikis, Sven
Brachmanski, Maciej
Treusch, Rolf
Plönjes, Elke
Siemer, Björn
Zacharias, Helmut
The soft X-ray and XUV split-and-delay unit at beamlines FL23/24 at FLASH2
title The soft X-ray and XUV split-and-delay unit at beamlines FL23/24 at FLASH2
title_full The soft X-ray and XUV split-and-delay unit at beamlines FL23/24 at FLASH2
title_fullStr The soft X-ray and XUV split-and-delay unit at beamlines FL23/24 at FLASH2
title_full_unstemmed The soft X-ray and XUV split-and-delay unit at beamlines FL23/24 at FLASH2
title_short The soft X-ray and XUV split-and-delay unit at beamlines FL23/24 at FLASH2
title_sort soft x-ray and xuv split-and-delay unit at beamlines fl23/24 at flash2
topic Beamlines
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10000806/
https://www.ncbi.nlm.nih.gov/pubmed/36891862
http://dx.doi.org/10.1107/S1600577523000395
work_keys_str_mv AT dreimannmatthias thesoftxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT wahlertfrank thesoftxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT eckermanndennis thesoftxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT rosenthalfelix thesoftxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT rolingsebastian thesoftxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT reikertobias thesoftxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT kuhlmannmarion thesoftxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT toleikissven thesoftxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT brachmanskimaciej thesoftxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT treuschrolf thesoftxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT plonjeselke thesoftxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT siemerbjorn thesoftxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT zachariashelmut thesoftxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT dreimannmatthias softxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT wahlertfrank softxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT eckermanndennis softxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT rosenthalfelix softxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT rolingsebastian softxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT reikertobias softxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT kuhlmannmarion softxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT toleikissven softxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT brachmanskimaciej softxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT treuschrolf softxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT plonjeselke softxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT siemerbjorn softxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2
AT zachariashelmut softxrayandxuvsplitanddelayunitatbeamlinesfl2324atflash2