Control of the Lasing Slice by Transverse Mismatch in an X-Ray Free-Electron Laser

被引：15
|
作者：
Chao, Yu-Chiu [1 ]
Qin, Weilun [1 ,2 ]
Ding, Yuantao [1 ]
Lutman, Alberto A. [1 ]
Maxwell, Timothy [1 ]
机构：
[1] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA
[2] Peking Univ, Inst Heavy Ion Phys, Sch Phys, Beijing 100871, Peoples R China
来源：
PHYSICAL REVIEW LETTERS | 2018年 / 121卷 / 06期
关键词：
All Open Access; Bronze;
D O I：
10.1103/PhysRevLett.121.064802
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We demonstrated selective slice-dependent lasing by controlling the matching to the undulator of different slices within an electron bunch. The slice-dependent mismatch was realized through quadrupole wakefield generated in a corrugated structure. A deterministic procedure based on empirical beam transport and phase space information is used to match selected slices by turns to lase in the undulator while keeping all other slices from lasing, thus staying fresh. Measurements of time-resolved electron bunch energy loss by a transverse deflecting cavity confirmed the predicted behavior.
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页数：5
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