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| 題名: | Temporal characterization of ultrashort linearly chirped electron bunches generated from a laser wakefield accelerator |
| 作者: | 白植豪;Zhang, C. J.;Hua, J. F.;Wan, Y.;Guo, B.;Pai, C.-H.;Wu, Y. P.;Li, F.;Chu, H.-H.;Gu, Y. Q.;Mori, W. B.;Joshi, C.;Wang, J.;Lu, W. |
| 貢獻者: | 理學院物理學系 |
| 關鍵詞: | Chirp;Dipoles;Electric fields;Electrons;Energy spectra;Lasers;PARTICLE ACCELERATORS;Particle in cell technique |
| 日期: | 2016-06-01 |
| 上傳時間: | 2026-04-23 14:39:20 (UTC+8) |
| 出版者: | College Park: American Physical Society |
| 摘要: | 摘要： A new method for diagnosing the temporal characteristics of ultrashort electron bunches with linear energy chirp generated from a laser wakefield accelerator is described. When the ionization-injected bunch interacts with the back of the drive laser, it is deflected and stretched along the direction of the electric field of the laser. Upon exiting the plasma, if the bunch goes through a narrow slit in front of the dipole magnet that disperses the electrons in the plane of the laser polarization, it can form a series of bunchlets that have different energies but are separated by half a laser wavelength. Since only the electrons that are undeflected by the laser go through the slit, the energy spectrum of the bunch is modulated. By analyzing the modulated energy spectrum, the shots where the bunch has a linear energy chirp can be recognized. Consequently, the energy chirp and beam current profile of those bunches can be reconstructed. This method is demonstrated through particle-in-cell simulations and experiment.
出版者： College Park: American Physical Society
出版日期： 2016-06-01
出處： Physical review. Accelerators and beams, 2016-06, Vol.19 (6), p.062802, Article 062802
資源來源： ProQuest
版權： 2016. This work is licensed under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.
識別號： ISSN: 2469-9888
識別號： EISSN: 2469-9888
識別號： DOI: 10.1103/PhysRevAccelBeams.19.062802 |
| 顯示於類別: | [物理學系] 期刊論文
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