Scheme for stabilization of output power of an x-ray self-amplified spontaneous emission free-electron laser

被引：3

作者：

Geloni, Gianluca ^{[1
]}

Saldin, Evgeni ^{[1
]}

Schneidmiller, Evgeni ^{[1
]}

Yurkov, Mikhail ^{[1
]}

机构：

[1] DESY, D-22607 Hamburg, Germany

来源：

PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS | 2008年 / 11卷 / 12期

关键词：

D O I：

10.1103/PhysRevSTAB.11.120701

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：

Output stability of an XFEL setup is naturally linked to the stability of the linac rf system through the bunch compression process. This fact leads to very tight tolerances for rf amplitudes and phases. We propose a feedback scheme using an optically modulated electron beam where the compression factor is self-stabilized due to the action of longitudinal space charge fields. Our scheme allows loosening rf tolerances by an order of magnitude. Alternatively, for the same variations of rf parameters, stability of the FEL pulse energy could be improved by an order of magnitude.

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页数：5

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