| WEOT08 電子加速器 7月31日 テルサホール 17:40-18:00 |
| 小型XUV-FELを目指したLWFAの開発 |
| Development of LWFA Towards a Table-top XUV-FEL |
| ○金 展，GU Yanjun，LEI Zhenzhe，佐藤 新悟（阪大産研），黄 開，中新 信彦，大東 出，神門 正城（量子科学技術研究開発機構関西研），細貝 知直（阪大産研） |
| ○Zhan Jin, Yanjun Gu, Zhenzhe Lei, Shingo Sato (SANKEN, Osaka Univ.), Kai Huang, Nobuhiko Nakanii, Izuru Daito, Masaki Kando (KPSI, QST), Tomonao Hosokai (SANKEN, Osaka Univ.) |
| In order to develop a stable laser wakefield acceleration (LWFA)-based accelerator and demonstrate FEL generation, the unique LWFA platform was constructed in the RIKEN SPring-8 center. Systematic experiments have been conducted, financially supported by ImPACT (2013-2018) and JST MIRAI (2018-) programs. It was found that the undulator radiation was unstable, due to the poor electron pointing stability and large energy fluctuations. In order to solve the above problems, the accelerated electron beam quality has been improved by developing the shock injection scheme enabling a precise injection control and a stable plasma condition. This development has dramatically improved the reproducibility and stability of the LWFA electron beam. The preliminary proof-of-concept experiment has recently demonstrated the clear amplification of the undulator radiation and the possibility of LWFA based FEL in XUV range. The talk will be presenting the outline of the LWFA platform, the setup of a proof-of-concept experiment focusing on key improvements and obtained results. |