Method of an enhanced self-amplified spontaneous emission for x-ray free electron lasers

被引:138
作者
Zholents, AA [1 ]
机构
[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
来源
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS | 2005年 / 8卷 / 04期
关键词
D O I
10.1103/PhysRevSTAB.8.040701
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
We describe a technique by which an energy modulation of electrons via interaction with a laser pulse in a wiggler magnet is used for a significant increase of the electron peak current prior to entering a long self-amplified spontaneous emission (SASE) free electron laser undulator. This results in a reduction of the gain length for the SASE process and a modification of the structure of the output x-ray radiation. It also temporally links the output x-ray pulse to the initial laser pulse, thus providing an opportunity for accurate synchronization between the laser pump pulse and x-ray probe pulse for pump-probe experiments.
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页码:8 / 13
页数:6
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