Sub-5-fs compression and synchronization of relativistic electron bunches enabled by a high-gradient $α$-magnet and low-jitter photoinjector
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arXiv
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| Autori principali: | , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866913976977195008 |
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| author | Yang, Yining Wang, Zhiyuan Lv, Peng Song, Baiting Huang, Pengwei Jia, Yanqing Liu, Zhuoxuan Zheng, Lianmin Huang, Wenhui Musumeci, Pietro Tang, Chuanxiang Li, Renkai |
| author_facet | Yang, Yining Wang, Zhiyuan Lv, Peng Song, Baiting Huang, Pengwei Jia, Yanqing Liu, Zhuoxuan Zheng, Lianmin Huang, Wenhui Musumeci, Pietro Tang, Chuanxiang Li, Renkai |
| contents | Generating high-brightness relativistic electron bunches with few-femtosecond duration, while simultaneously achieving few-fs synchronization with ultrafast lasers, remains an outstanding challenge at the frontier of accelerator physics and ultrafast science. In this Letter, we present the beam physics and experimental demonstration of a new method that, for the first time, enables simultaneous control of bunch duration and synchronization with few-fs precision. Timing stabilization is achieved using a tailored high-gradient $α$-magnet that optimizes the correlation between time of flight and momentum, together with a photocathode RF gun designed to suppress the effect of RF-to-laser timing jitter. Compression is realized by manipulating the time-momentum correlation in phase space, primarily through space-charge effects. Sub-5-fs rms bunch duration and synchronization are demonstrated. This method establishes a new regime in electron bunch control, unlocking new capabilities for ultrafast beam physics and applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_03946 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Sub-5-fs compression and synchronization of relativistic electron bunches enabled by a high-gradient $α$-magnet and low-jitter photoinjector Yang, Yining Wang, Zhiyuan Lv, Peng Song, Baiting Huang, Pengwei Jia, Yanqing Liu, Zhuoxuan Zheng, Lianmin Huang, Wenhui Musumeci, Pietro Tang, Chuanxiang Li, Renkai Accelerator Physics Generating high-brightness relativistic electron bunches with few-femtosecond duration, while simultaneously achieving few-fs synchronization with ultrafast lasers, remains an outstanding challenge at the frontier of accelerator physics and ultrafast science. In this Letter, we present the beam physics and experimental demonstration of a new method that, for the first time, enables simultaneous control of bunch duration and synchronization with few-fs precision. Timing stabilization is achieved using a tailored high-gradient $α$-magnet that optimizes the correlation between time of flight and momentum, together with a photocathode RF gun designed to suppress the effect of RF-to-laser timing jitter. Compression is realized by manipulating the time-momentum correlation in phase space, primarily through space-charge effects. Sub-5-fs rms bunch duration and synchronization are demonstrated. This method establishes a new regime in electron bunch control, unlocking new capabilities for ultrafast beam physics and applications. |
| title | Sub-5-fs compression and synchronization of relativistic electron bunches enabled by a high-gradient $α$-magnet and low-jitter photoinjector |
| topic | Accelerator Physics |
| url | https://arxiv.org/abs/2508.03946 |