Implementation and performance of a fiber-coupled CMOS camera in an ultrafast reflective high-energy electron diffraction experiment
The implementation of a monolithic fiber-optically coupled CMOS-based TemCam-XF416 camera into our ultra-high vacuum (UHV) ultrafast reflection high-energy electron diffraction setup is reported. A combination of a pumpable gate valve and a self-built cooling collar allows UHV conditions to be reach...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC and ACA
2025-03-01
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| Series: | Structural Dynamics |
| Online Access: | http://dx.doi.org/10.1063/4.0000284 |
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| author | Jonas D. Fortmann Alexander Kaßen Christian Brand Thomas Duden Michael Horn-von Hoegen |
| author_facet | Jonas D. Fortmann Alexander Kaßen Christian Brand Thomas Duden Michael Horn-von Hoegen |
| author_sort | Jonas D. Fortmann |
| collection | DOAJ |
| description | The implementation of a monolithic fiber-optically coupled CMOS-based TemCam-XF416 camera into our ultra-high vacuum (UHV) ultrafast reflection high-energy electron diffraction setup is reported. A combination of a pumpable gate valve and a self-built cooling collar allows UHV conditions to be reached without the need to remove the heat-sensitive device. The water-cooled collar is mounted to the camera housing and prevents heating of the camera upon bakeout of the UHV chamber. The TemCam possesses an one order of magnitude higher spatial resolution, which provides 30% higher resolution in reciprocal space than the previously used microchannel plate detector. The low background intensity and the four times larger dynamic range enable analysis of the diffuse intensity of the diffraction pattern like Kikuchi lines and bands. A key advantage over the previous MCP detector is the complete absence of the blooming effect, which enables the quantitative spot profile analysis of the diffraction spots. The inherent light sensitivity in an optical pump experiment can be overcome by subtracting a pump image without a probe, using photons with
hν<1.12 eV (indirect bandgap of silicon), or shielding any stray light. |
| format | Article |
| id | doaj-art-a8aab33ffc3140828ebc8a91967ff9c7 |
| institution | OA Journals |
| issn | 2329-7778 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | AIP Publishing LLC and ACA |
| record_format | Article |
| series | Structural Dynamics |
| spelling | doaj-art-a8aab33ffc3140828ebc8a91967ff9c72025-08-20T02:11:09ZengAIP Publishing LLC and ACAStructural Dynamics2329-77782025-03-01122024301024301-710.1063/4.0000284Implementation and performance of a fiber-coupled CMOS camera in an ultrafast reflective high-energy electron diffraction experimentJonas D. Fortmann0Alexander Kaßen1Christian Brand2Thomas Duden3Michael Horn-von Hoegen4Faculty of Physics, University of Duisburg-Essen, 47057 Duisburg, GermanyFaculty of Physics, University of Duisburg-Essen, 47057 Duisburg, GermanyFaculty of Physics, University of Duisburg-Essen, 47057 Duisburg, GermanyTh. Duden Konstruktionsbüro, Mustangweg 17, 33649 Bielefeld, GermanyFaculty of Physics, University of Duisburg-Essen, 47057 Duisburg, GermanyThe implementation of a monolithic fiber-optically coupled CMOS-based TemCam-XF416 camera into our ultra-high vacuum (UHV) ultrafast reflection high-energy electron diffraction setup is reported. A combination of a pumpable gate valve and a self-built cooling collar allows UHV conditions to be reached without the need to remove the heat-sensitive device. The water-cooled collar is mounted to the camera housing and prevents heating of the camera upon bakeout of the UHV chamber. The TemCam possesses an one order of magnitude higher spatial resolution, which provides 30% higher resolution in reciprocal space than the previously used microchannel plate detector. The low background intensity and the four times larger dynamic range enable analysis of the diffuse intensity of the diffraction pattern like Kikuchi lines and bands. A key advantage over the previous MCP detector is the complete absence of the blooming effect, which enables the quantitative spot profile analysis of the diffraction spots. The inherent light sensitivity in an optical pump experiment can be overcome by subtracting a pump image without a probe, using photons with hν<1.12 eV (indirect bandgap of silicon), or shielding any stray light.http://dx.doi.org/10.1063/4.0000284 |
| spellingShingle | Jonas D. Fortmann Alexander Kaßen Christian Brand Thomas Duden Michael Horn-von Hoegen Implementation and performance of a fiber-coupled CMOS camera in an ultrafast reflective high-energy electron diffraction experiment Structural Dynamics |
| title | Implementation and performance of a fiber-coupled CMOS camera in an ultrafast reflective high-energy electron diffraction experiment |
| title_full | Implementation and performance of a fiber-coupled CMOS camera in an ultrafast reflective high-energy electron diffraction experiment |
| title_fullStr | Implementation and performance of a fiber-coupled CMOS camera in an ultrafast reflective high-energy electron diffraction experiment |
| title_full_unstemmed | Implementation and performance of a fiber-coupled CMOS camera in an ultrafast reflective high-energy electron diffraction experiment |
| title_short | Implementation and performance of a fiber-coupled CMOS camera in an ultrafast reflective high-energy electron diffraction experiment |
| title_sort | implementation and performance of a fiber coupled cmos camera in an ultrafast reflective high energy electron diffraction experiment |
| url | http://dx.doi.org/10.1063/4.0000284 |
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