Matching-based fresh-slice method for generating two-color x-ray free-electron lasers

被引：22
|
作者：
Qin, Weilun [1 ,2 ]
Ding, Yuantao [2 ]
Lutman, Alberto A. [2 ]
Chao, Yu-Chiu [2 ]
机构：
[1] Peking Univ, Inst Heavy Ion Phys, Sch Phys, Beijing 100871, Peoples R China
[2] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA
来源：
PHYSICAL REVIEW ACCELERATORS AND BEAMS | 2017年 / 20卷 / 09期
关键词：
SPECTROSCOPY; SCATTERING;
D O I：
10.1103/PhysRevAccelBeams.20.090701
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
Two-color high intensity x-ray free-electron lasers (FELs) provide powerful tools for probing ultrafast dynamic systems. A novel concept of realizing fresh-slice two-color lasing through slice-dependent transverse mismatch has been proposed by one of the authors [Y. Chao, SLAC Report No. SLAC-PUB-16935, 2016]. In this paper we present a feasible example following this concept based on the Linac Coherent Light Source parameters. Time-dependent mismatch along the bunch is generated by a passive dechirper module and controlled by downstream matching sections, enabling FEL lasing at different wavelength with a split undulator configuration. Simulations for soft x-ray FELs show that tens of gigawatts pulses with femtosecond duration can be generated.
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页数：9
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