摘要
Beam quality degradation during the transition from a laser wakefield accelerator to the vacuum is one of the reasons that cause the beam transport distortion, which hinders the way to compact free-electron-lasers. Here,we performed transition simulation to initialize the beam parameters for beam optics transport. This initialization was crucial in matching the experimental results and the designed evolution of the beamline. We experimentally characterized properties of high-quality laser-wakefield-accelerated electron beams, such as transverse beam profile, divergence, and directionality after long-distance transport. By installing magnetic quadrupole lenses with tailored strength gradients, we successfully collimated the electron beams with tunable energies from 200 to 600 MeV.
Beam quality degradation during the transition from a laser wakefield accelerator to the vacuum is one of the reasons that cause the beam transport distortion, which hinders the way to compact free-electron-lasers. Here,we performed transition simulation to initialize the beam parameters for beam optics transport. This initialization was crucial in matching the experimental results and the designed evolution of the beamline. We experimentally characterized properties of high-quality laser-wakefield-accelerated electron beams, such as transverse beam profile, divergence, and directionality after long-distance transport. By installing magnetic quadrupole lenses with tailored strength gradients, we successfully collimated the electron beams with tunable energies from 200 to 600 MeV.
作者
Ming Fang
Wentao Wang
Zhijun Zhang
Jiansheng Liu
Changhai Yu
Rong Qi
Zhiyong Qin
Jiaqi Liu
Ke Feng
Cheng Wang
Tao Liu
Dong Wang
Yi Xu
Fenxiang Wu
Yuxin Leng
Ruxin Li
Zhizhan Xu
方明;王文涛;张志钧;刘建胜;余昌海;齐荣;秦志勇;刘佳琦;冯珂;吴颖;王成;刘涛;王东;许毅;吴分翔;冷雨欣;李儒新;徐至展(Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;University of Chinese Academy of Sciences, Beijing 100049, China;Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiao Tong University, Shanghai 200240, China;Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;School of Physical Science and Technology, Shanghai Tech University, Shanghai 200031, China)
基金
supported by the National Natural Science Foundation of China(Nos.11127901,11425418,61521093,11304271,11205228,and 11505263)
the Strategic Priority Research Program(B)(No.XDB16)
the Youth Innovation Promotion Association CAS
the State Key Laboratory Program of the Chinese Ministry of Science and Technology
