Design considerations for a SASE X-ray FEL

被引:17
作者
Pellegrini, C [1 ]
机构
[1] Univ Calif Los Angeles, Dept Phys, Los Angeles, CA 90095 USA
关键词
free-electron laser; X-ray laser; radiation from relativistic electrons;
D O I
10.1016/S0168-9002(01)01527-3
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
The well developed theory of short wavelength SASE-FELs is now being used to design two X-ray lasers, LCLS and Tesla-FEL. However, the physics and technology of these projects present some unique challenges, related to the very high peak current of the electron beam, the very long undulator needed to reach saturation, and the importance of preserving the beam phase-space density even in the presence of large wake-field effects. In the first part of this paper, we review the basic elements of the theory, the scaling laws for an X-ray SASE-FEL, and the status of the experimental verification of the theory. We then discuss some of the most important issues for the design of these systems, including wake-field effects in the undulator, and the choice of undulator type and beam parameters. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:1 / 12
页数:12
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