2022 Fiscal Year Annual Research Report
Study of electron longitudinal phase space in laser wakefield acceleration via electro-optic streaking technique
| Project/Area Number |
21K17998
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| Research Institution | National Institutes for Quantum Science and Technology |
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Principal Investigator |
黄 開 国立研究開発法人量子科学技術研究開発機構, 関西光科学研究所 光量子科学研究部, 主任研究員 (30866166)
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| Project Period (FY) |
2021-04-01 – 2023-03-31
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| Keywords | high power laser / electron acceleration / beam diagnostics / longitudinal phase space / electro-optic sampling |
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| Outline of Annual Research Achievements |
We proposed a brand new electro-optic streaking technique for the single-shot measurement of the electron longitudinal phase space (LPS) in laser wakefield acceleration. Based on the preparations in the first fiscal year, the major research achievements in the last fiscal year are:
(1) For the experimental aspect: The experimental set-up of the LPS measurement in LWFA was carefully designed. A dog-leg system composed of two dipole magnet was designed. The magnets have been manufactured and delivered. For easier access to the overall self-field information of the electron bunches, the measurement on the transition radiations (TR) from the electron bunches are planned.
(2) For the theoretical aspect: I have developed a code covering all the sessions in the LPS measurement: time lag calculation in the dog-leg, TR imaging calculation, electro-optic (EO) signal calculation, etc. In the calculation, I have observed distinguishable differences of the EO signals when the electron bunches have different temporal energy chirps.
Major publication highlights: The paper "Kai Huang et al., Applied Physics Express 15, 036001 (2022)" was specially selected as the highlight of the journal from all the spotlight papers in 2022. Two invited review papers were published: “K. Huang, J. Plasma Fusion Res. Vol.99, No.2 (2023) 33-39” and “J. Particle Accelerator Society of Japan, Vol. 19, No. 3, 2022”. Several talks have been given in international conferences.
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Research Products
(5 results)
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[Presentation] Temporal characterizations of electron bunches from laser plasma accelerator2022
Author(s)
KAI HUANG, Kotaki Hideyuki, Mori Michiaki, Esirkepov Timur, James Kevin Koga, Hayashi Yukio, Nakanii Nobuhiko, Kando Masaki, Zhan Jin, Hosokai Tomonao
Organizer
6th Asia-Pacific Conference on Plasma Physics, 2022
Int'l Joint Research / Invited
