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Title: A Review of X-ray Free-Electron Laser Theory

Abstract

High-gain free-electron lasers (FELs) are being developed as extremely bright sources for a next-generation x-ray facility. In this paper, we review the basic theory of the startup, the exponential growth, and the saturation of the high-gain process, emphasizing the self-amplified spontaneous emission (SASE). The radiation characteristics of an x-ray FEL, including its transverse coherence, temporal characteristics, and harmonic content, are discussed. FEL performance in the presence of machine errors and undulator wakefields is examined. Various enhancement schemes through seeding and beam manipulations are summarized.

Authors:
; ; ;
Publication Date:
Research Org.:
Stanford Linear Accelerator Center (SLAC)
Sponsoring Org.:
USDOE
OSTI Identifier:
896722
Report Number(s):
SLAC-PUB-12262
TRN: US0700877
DOE Contract Number:
AC02-76SF00515
Resource Type:
Journal Article
Resource Relation:
Journal Name: Phys. Rev. ST Accel. Beams
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; FREE ELECTRON LASERS; HARMONICS; LASERS; PERFORMANCE; RADIATIONS; SATURATION; WIGGLER MAGNETS; Accelerators,ACCPHY, OPTICS, XFEL

Citation Formats

Huang, Zhirong, /SLAC, Kim, Kwang-Je, and /ANL, APS. A Review of X-ray Free-Electron Laser Theory. United States: N. p., 2006. Web.
Huang, Zhirong, /SLAC, Kim, Kwang-Je, & /ANL, APS. A Review of X-ray Free-Electron Laser Theory. United States.
Huang, Zhirong, /SLAC, Kim, Kwang-Je, and /ANL, APS. Mon . "A Review of X-ray Free-Electron Laser Theory". United States. doi:. https://www.osti.gov/servlets/purl/896722.
@article{osti_896722,
title = {A Review of X-ray Free-Electron Laser Theory},
author = {Huang, Zhirong and /SLAC and Kim, Kwang-Je and /ANL, APS},
abstractNote = {High-gain free-electron lasers (FELs) are being developed as extremely bright sources for a next-generation x-ray facility. In this paper, we review the basic theory of the startup, the exponential growth, and the saturation of the high-gain process, emphasizing the self-amplified spontaneous emission (SASE). The radiation characteristics of an x-ray FEL, including its transverse coherence, temporal characteristics, and harmonic content, are discussed. FEL performance in the presence of machine errors and undulator wakefields is examined. Various enhancement schemes through seeding and beam manipulations are summarized.},
doi = {},
journal = {Phys. Rev. ST Accel. Beams},
number = ,
volume = ,
place = {United States},
year = {Mon Dec 18 00:00:00 EST 2006},
month = {Mon Dec 18 00:00:00 EST 2006}
}
  • High-gain free-electron lasers (FELs) are being developed as extremely bright sources for a next-generation x-ray facility. In this paper, we review the basic theory of the start-up, the exponential growth, and the saturation of the high-gain process, emphasizing the self-amplified spontaneous emission. The radiation characteristics of an x-ray FEL, including its transverse coherence, temporal characteristics, and harmonic content, are discussed. FEL performance in the presence of machine errors and undulator wakefields is examined. Various enhancement schemes through seeding and beam manipulations are summarized.
  • Classical 1D X-ray Free Electron Laser (X-ray FEL) theory has stood the test of time by guiding FEL design and development prior to any full-scale analysis. Future X-ray FELs and inverse-Compton sources, where photon recoil approaches an electron energy spread value, push the classical theory to its limits of applicability. After substantial efforts by the community to find what those limits are, there is no universally agreed upon quantum approach to design and development of future X-ray sources. We offer a new approach to formulate the quantum theory for 1D X-ray FELs that has an obvious connection to the classicalmore » theory, which allows for immediate transfer of knowledge between the two regimes. In conclusion, we exploit this connection in order to draw quantum mechanical conclusions about the quantum nature of electrons and generated radiation in terms of FEL variables.« less