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.

引用

页数：7

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