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Stability of Bragg reflectors under megahertz heat load at XFELs
Modern X-ray free-electron laser (XFEL) sources can deliver photon pulses with millijoule pulse energies and megahertz repetition rate. As shown by the simulations in this work, for particular cases the dynamical heat load effects for Bragg reflectors could cause problems at these facilities. These...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
International Union of Crystallography
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9814069/ https://www.ncbi.nlm.nih.gov/pubmed/36601921 http://dx.doi.org/10.1107/S1600577522009778 |
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author | Bahns, Immo Rauer, Patrick Rossbach, Jörg Sinn, Harald |
author_facet | Bahns, Immo Rauer, Patrick Rossbach, Jörg Sinn, Harald |
author_sort | Bahns, Immo |
collection | PubMed |
description | Modern X-ray free-electron laser (XFEL) sources can deliver photon pulses with millijoule pulse energies and megahertz repetition rate. As shown by the simulations in this work, for particular cases the dynamical heat load effects for Bragg reflectors could cause problems at these facilities. These problems would be underestimated if only quasi-static thermoelastic simulations are considered. Nevertheless, for the sake of simplicity the quasi-static approach is a common choice for estimating heat load effects. To emphasize the relevance of dynamical thermoelastic effects, the response to the partial absorption of an X-ray pulse, as provided by a saturated X-ray free-electron laser oscillator (XFELO) in a single crystal diamond with a thickness of 100 µm and lateral dimensions in the millimetre range, is discussed in this work. The outcome of the dynamic thermoelastic simulations indicates a clear dominance regarding the strain value reached, which is present for consecutive X-ray matter interactions with megahertz repetition rate. |
format | Online Article Text |
id | pubmed-9814069 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | International Union of Crystallography |
record_format | MEDLINE/PubMed |
spelling | pubmed-98140692023-01-09 Stability of Bragg reflectors under megahertz heat load at XFELs Bahns, Immo Rauer, Patrick Rossbach, Jörg Sinn, Harald J Synchrotron Radiat Research Papers Modern X-ray free-electron laser (XFEL) sources can deliver photon pulses with millijoule pulse energies and megahertz repetition rate. As shown by the simulations in this work, for particular cases the dynamical heat load effects for Bragg reflectors could cause problems at these facilities. These problems would be underestimated if only quasi-static thermoelastic simulations are considered. Nevertheless, for the sake of simplicity the quasi-static approach is a common choice for estimating heat load effects. To emphasize the relevance of dynamical thermoelastic effects, the response to the partial absorption of an X-ray pulse, as provided by a saturated X-ray free-electron laser oscillator (XFELO) in a single crystal diamond with a thickness of 100 µm and lateral dimensions in the millimetre range, is discussed in this work. The outcome of the dynamic thermoelastic simulations indicates a clear dominance regarding the strain value reached, which is present for consecutive X-ray matter interactions with megahertz repetition rate. International Union of Crystallography 2023-01-01 /pmc/articles/PMC9814069/ /pubmed/36601921 http://dx.doi.org/10.1107/S1600577522009778 Text en © Immo Bahns 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 | Research Papers Bahns, Immo Rauer, Patrick Rossbach, Jörg Sinn, Harald Stability of Bragg reflectors under megahertz heat load at XFELs |
title | Stability of Bragg reflectors under megahertz heat load at XFELs |
title_full | Stability of Bragg reflectors under megahertz heat load at XFELs |
title_fullStr | Stability of Bragg reflectors under megahertz heat load at XFELs |
title_full_unstemmed | Stability of Bragg reflectors under megahertz heat load at XFELs |
title_short | Stability of Bragg reflectors under megahertz heat load at XFELs |
title_sort | stability of bragg reflectors under megahertz heat load at xfels |
topic | Research Papers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9814069/ https://www.ncbi.nlm.nih.gov/pubmed/36601921 http://dx.doi.org/10.1107/S1600577522009778 |
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