Decoding Sources of Energy Variability in a Laser-Plasma Accelerator

被引：125
|
作者：
Maier, Andreas R. [1 ,2 ,3 ]
Delbos, Niels M. [1 ,2 ]
Eichner, Timo [1 ,2 ]
Huebner, Lars [1 ,2 ,3 ]
Jalas, Soeren [1 ,2 ]
Jeppe, Laurids [1 ,2 ]
Jolly, Spencer W. [1 ,2 ,4 ]
Kirchen, Manuel [1 ,2 ]
Leroux, Vincent [1 ,2 ,3 ,4 ]
Messner, Philipp [1 ,2 ,5 ]
Schnepp, Matthias [1 ,2 ]
Trunk, Maximilian [1 ,2 ]
Walker, Paul A. [1 ,2 ,3 ]
Werle, Christian [1 ,2 ]
Winkler, Paul [1 ,2 ,3 ]
机构：
[1] Univ Hamburg, Ctr Free Electron Laser Sci, Luruper Chaussee 149, D-22761 Hamburg, Germany
[2] Univ Hamburg, Dept Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany
[3] DESY, Notkestr 85, D-22607 Hamburg, Germany
[4] ASCR, Inst Phys, ELI Beamlines Project, Na Slovance 2, Prague 18221, Czech Republic
[5] Int Max Planck Res Sch Ultrafast Imaging & Struct, Luruper Chaussee 149, D-22761 Hamburg, Germany
来源：
PHYSICAL REVIEW X | 2020年 / 10卷 / 03期
关键词：
31;
D O I：
10.1103/PhysRevX.10.031039
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Laser-plasma acceleration promises compact sources of high-brightness relativistic electron beams. However, the limited stability often associated with laser-plasma acceleration has previously prevented a detailed mapping of the drive laser and electron performance and represents a major obstacle towards advancing laser-plasma acceleration for applications. Here, we correlate drive laser and electron-beam parameters with high statistics to identify and quantify sources of electron energy drift and jitter. Based on our fmdings, we provide a parametrization to predict the electron energy drift with subpercent accuracy for many hours from measured laser parameters, which opens a path for performance improvements by active stabilization. Our results arc enabled by the first stable 24-h operation of a laser-plasma accelerator and the statistics from 100 000 consecutive electron beams, which, by itself, marks an important milestone.
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页数：7
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