期刊
NATURE PHOTONICS
卷 15, 期 6, 页码 426-430出版社
NATURE PORTFOLIO
DOI: 10.1038/s41566-021-00779-x
关键词
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资金
- National Natural Science Foundation of China (NSFC) [11835004]
- Science Challenge Project [TZ2018005]
Terahertz-driven acceleration has emerged as an efficient and reliable way to deliver ultrashort bright electron beams, but challenges still remain. Recent research has demonstrated critical advances towards high-energy terahertz-driven acceleration of relativistic beams, offering potential for future scientific discoveries.
Terahertz-driven acceleration has recently emerged as a route for delivering ultrashort bright electron beams efficiently, reliably and in a compact set-up. Many working schemes and key technologies related to terahertz-driven acceleration have been successfully demonstrated and are being developeds(1-10). However, the achieved acceleration gradient and energy gain remain low, and the potential physics and technical challenges in the high-energy regime are still underexplored. Here we report whole-bunch acceleration of relativistic beams with an effective acceleration gradient of up to 85 MV m(-1) in a single-stage configuration and demonstrate a cascaded terahertz-driven acceleration scheme of relativistic beams with an energy gain of 204 keV. These proof-of-principle results represent a critical advance towards high-energy terahertz-driven acceleration of relativistic beams, are scalable and have great potential to provide high-quality beams, with implications for future terahertz-driven electron sources and related scientific discoveries.
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