期刊
IEEE TRANSACTIONS ON PLASMA SCIENCE
卷 46, 期 6, 页码 1900-1912出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPS.2018.2827301
关键词
Accelerator; free-electron laser; high-brightness electron beam; light source
资金
- U.S. Department of Energy through the LANL/LDRD Program
This paper provides a tutorial on X-ray freeelectron lasers (XFELs) which are currently being designed, built, commissioned, and operated as fourth-generation light sources to enable discovery science in materials science, biology, and chemistry. XFELs are complex devices, driven by high-energy, high-brightness electron accelerators and cost on the order of $B. Here, we provide a basic introduction to their operating physics and a description of their main accelerator components. To make their basic operating principle accessible to the electrical engineering community, we rederive the FEL dispersion relation in a manner similar to that done for traveling-wave tubes. We finish with sections describing some unique features of the X-rays generated and on the physics that lead to the main design limitations, including approaches for mitigation.
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