Temporal characterization of laser driven ultrafast electron bunches via electro-optic sampling
| Autor: | HUANG, KAI, Hideyuki, Kotaki, Michiaki, Mori, Timur, Esirkepov, Kevin Koga, James, Yukio, Hayashi, Nobuhiko, Nakanii, Jin, Zhan, Tomonao, Hosokai, Masaki, Kando |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Popis: | High power laser-driven electron sources [1,2], with their inherent ultrafast character, are considered to have potentials for applications in fast ignition [3], pump-probe study [4], and the construction of a table-top x-ray free-electron laser (XFEL) [5]. For such applications, the timing jitter and the bunch duration of the electron bunches are important parameters that are barely investigated experimentally. We established electro-optic sampling techniques [6] adequate for the diagnostics of electron temporal information in laser wakefield acceleration (LWFA) [2]. For the investigation of electron timing jitter and injection process, electro-optic spatial decoding (EOSD) on the electron Coulomb field was performed. The spherical wavefront of the Coulomb field and plasma-density-dependent electron emission timing were discovered [7,8,9]. For the determination of electron bunch durations, EOSD on the coherent transition radiation (CTR) produced when electrons passing through a metal foil was conducted. An electron beam peak current up to 10 kA was demonstrated. This research not only showed the capability of EO sampling serving as a real-time electron temporal diagnostic for laser-driven sources but also demonstrated the ultra-fast and high-brightness nature of laser-driven electron sources for various applications. The 30th International Toki Conference on Plasma and Fusion Research |
| Databáze: | OpenAIRE |
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