Multi-segment cooling design of a reflection mirror based on the finite-element method
High-repetition-rate free-electron lasers impose stringent requirements on thermal deformations of optics in the beamline. The Shanghai HIgh-repetition-rate XFEL aNd Extreme light facility (SHINE) experiences high average thermal power and demands wavefront preservation. To effectively manage therma...
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| Format: | Article |
| Language: | English |
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International Union of Crystallography
2025-01-01
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| Series: | Journal of Synchrotron Radiation |
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| Online Access: | https://journals.iucr.org/paper?S1600577524009664 |
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| author | Zhen Wang Yajun Tong Fang Liu Chaofan Xue Limin Jin Zhi Liu |
| author_facet | Zhen Wang Yajun Tong Fang Liu Chaofan Xue Limin Jin Zhi Liu |
| author_sort | Zhen Wang |
| collection | DOAJ |
| description | High-repetition-rate free-electron lasers impose stringent requirements on thermal deformations of optics in the beamline. The Shanghai HIgh-repetition-rate XFEL aNd Extreme light facility (SHINE) experiences high average thermal power and demands wavefront preservation. To effectively manage thermal deformation in the first reflection mirrors M1, we optimized the cooling length and position of the cooling groove with numerical calculations. For example, the root mean square of the height error of the thermal deformation of the mirror at a photon energy of 900 eV was optimized, resulting in a 12.7× reduction, from 13.76 nm to 1.08 nm. This optimized design also eliminated stray light in the focus spot at the sample and resulted in a 177% increase in the peak intensity of the beam's focus spot at the sample, from 3.08 × 105 to 8.53 × 105. The multi-segment cooling design of the mirror advanced the quality of the beam's focus spot at the sample and ensured the stable operation of SHINE under high repetition rates. |
| format | Article |
| id | doaj-art-3f8936c60a8b4e258375b4ecf6b9f9d1 |
| institution | Kabale University |
| issn | 1600-5775 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | International Union of Crystallography |
| record_format | Article |
| series | Journal of Synchrotron Radiation |
| spelling | doaj-art-3f8936c60a8b4e258375b4ecf6b9f9d12025-01-07T14:26:37ZengInternational Union of CrystallographyJournal of Synchrotron Radiation1600-57752025-01-01321101610.1107/S1600577524009664mo5291Multi-segment cooling design of a reflection mirror based on the finite-element methodZhen Wang0Yajun Tong1Fang Liu2Chaofan Xue3Limin Jin4Zhi Liu5Center for Transformative Science, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, People's Republic of ChinaCenter for Transformative Science, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, People's Republic of ChinaCenter for Transformative Science, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, People's Republic of ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, People's Republic of ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, People's Republic of ChinaCenter for Transformative Science, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, People's Republic of ChinaHigh-repetition-rate free-electron lasers impose stringent requirements on thermal deformations of optics in the beamline. The Shanghai HIgh-repetition-rate XFEL aNd Extreme light facility (SHINE) experiences high average thermal power and demands wavefront preservation. To effectively manage thermal deformation in the first reflection mirrors M1, we optimized the cooling length and position of the cooling groove with numerical calculations. For example, the root mean square of the height error of the thermal deformation of the mirror at a photon energy of 900 eV was optimized, resulting in a 12.7× reduction, from 13.76 nm to 1.08 nm. This optimized design also eliminated stray light in the focus spot at the sample and resulted in a 177% increase in the peak intensity of the beam's focus spot at the sample, from 3.08 × 105 to 8.53 × 105. The multi-segment cooling design of the mirror advanced the quality of the beam's focus spot at the sample and ensured the stable operation of SHINE under high repetition rates.https://journals.iucr.org/paper?S1600577524009664finite-element analysishigh heat loadheight errorcooling optimization |
| spellingShingle | Zhen Wang Yajun Tong Fang Liu Chaofan Xue Limin Jin Zhi Liu Multi-segment cooling design of a reflection mirror based on the finite-element method Journal of Synchrotron Radiation finite-element analysis high heat load height error cooling optimization |
| title | Multi-segment cooling design of a reflection mirror based on the finite-element method |
| title_full | Multi-segment cooling design of a reflection mirror based on the finite-element method |
| title_fullStr | Multi-segment cooling design of a reflection mirror based on the finite-element method |
| title_full_unstemmed | Multi-segment cooling design of a reflection mirror based on the finite-element method |
| title_short | Multi-segment cooling design of a reflection mirror based on the finite-element method |
| title_sort | multi segment cooling design of a reflection mirror based on the finite element method |
| topic | finite-element analysis high heat load height error cooling optimization |
| url | https://journals.iucr.org/paper?S1600577524009664 |
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