Thermoelastic response of Bragg crystals under MHz thermal loading
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866917804899303424 |
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| author | Liu, Peifan Kim, Kwang-Je Lindberg, Ryan Shvyd'ko, Yuri |
| author_facet | Liu, Peifan Kim, Kwang-Je Lindberg, Ryan Shvyd'ko, Yuri |
| contents | An x-ray free-electron laser oscillator (XFELO) is a promising candidate for producing fully coherent x-rays beyond the fourth-generation light sources. An R&D XFELO experiment (ANL-SLAC-Spring-8 collaboration) to demonstrate the basic principles and measure the two-pass FEL gain is expected to be accomplished by 2025. Beyond this R&D experiment, an XFELO user facility will be eventually needed to produce stable x-ray pulses with saturated pulse energy at MHz repetition rate. One of the outstanding issues for realizing an MHz XFELO is the possible Bragg crystal degradation due to the high-repetition-rate thermal loading from high-pulse-energy x-rays. The deposited energy by one x-ray pulse induces temperature gradients and elastic waves in the crystal, where the deformed crystal lattice impacts the Bragg performance for subsequent x-ray pulses. Here, we present studies of the crystal thermoelastic response under thermal loading of high-energy x-ray pulse trains. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_12290 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Thermoelastic response of Bragg crystals under MHz thermal loading Liu, Peifan Kim, Kwang-Je Lindberg, Ryan Shvyd'ko, Yuri Accelerator Physics An x-ray free-electron laser oscillator (XFELO) is a promising candidate for producing fully coherent x-rays beyond the fourth-generation light sources. An R&D XFELO experiment (ANL-SLAC-Spring-8 collaboration) to demonstrate the basic principles and measure the two-pass FEL gain is expected to be accomplished by 2025. Beyond this R&D experiment, an XFELO user facility will be eventually needed to produce stable x-ray pulses with saturated pulse energy at MHz repetition rate. One of the outstanding issues for realizing an MHz XFELO is the possible Bragg crystal degradation due to the high-repetition-rate thermal loading from high-pulse-energy x-rays. The deposited energy by one x-ray pulse induces temperature gradients and elastic waves in the crystal, where the deformed crystal lattice impacts the Bragg performance for subsequent x-ray pulses. Here, we present studies of the crystal thermoelastic response under thermal loading of high-energy x-ray pulse trains. |
| title | Thermoelastic response of Bragg crystals under MHz thermal loading |
| topic | Accelerator Physics |
| url | https://arxiv.org/abs/2410.12290 |