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Title: Fully Coherent X-Ray Pulses from a Regenerative-Amplifier Free-Electron Laser

Abstract

We propose and analyze a regenerative-amplifier free-electron laser (FEL) to produce fully coherent, hard x-ray pulses. The method makes use of narrow-bandwidth Bragg crystals to form an x-ray feedback loop around a relatively short undulator. Self-amplified spontaneous emission (SASE) from the leading electron bunch in a bunch train is spectrally filtered by the Bragg reflectors and is brought back to the beginning of the undulator to interact repeatedly with subsequent bunches in the bunch train. The FEL interaction with these short bunches regeneratively amplifies the radiation intensity and broadens its spectrum, allowing for effective transmission of the x rays outside the crystal bandwidth. The spectral brightness of these x-ray pulses is about 2 to 3 orders of magnitude higher than that from a single-pass SASE FEL.

Authors:
;  [1]
  1. Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309 (United States)
Publication Date:
OSTI Identifier:
20777143
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 96; Journal Issue: 14; Other Information: DOI: 10.1103/PhysRevLett.96.144801; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AMPLIFIERS; BEAM BUNCHING; BRAGG REFLECTION; BRIGHTNESS; CRYSTALS; ELECTRON EMISSION; ELECTRONS; FEEDBACK; FREE ELECTRON LASERS; HARD X RADIATION; INTERACTIONS; PULSES; TRANSMISSION; WIGGLER MAGNETS; X-RAY LASERS

Citation Formats

Zhirong, Huang, and Ruth, Ronald D. Fully Coherent X-Ray Pulses from a Regenerative-Amplifier Free-Electron Laser. United States: N. p., 2006. Web. doi:10.1103/PhysRevLett.96.144801.
Zhirong, Huang, & Ruth, Ronald D. Fully Coherent X-Ray Pulses from a Regenerative-Amplifier Free-Electron Laser. United States. doi:10.1103/PhysRevLett.96.144801.
Zhirong, Huang, and Ruth, Ronald D. Fri . "Fully Coherent X-Ray Pulses from a Regenerative-Amplifier Free-Electron Laser". United States. doi:10.1103/PhysRevLett.96.144801.
@article{osti_20777143,
title = {Fully Coherent X-Ray Pulses from a Regenerative-Amplifier Free-Electron Laser},
author = {Zhirong, Huang and Ruth, Ronald D},
abstractNote = {We propose and analyze a regenerative-amplifier free-electron laser (FEL) to produce fully coherent, hard x-ray pulses. The method makes use of narrow-bandwidth Bragg crystals to form an x-ray feedback loop around a relatively short undulator. Self-amplified spontaneous emission (SASE) from the leading electron bunch in a bunch train is spectrally filtered by the Bragg reflectors and is brought back to the beginning of the undulator to interact repeatedly with subsequent bunches in the bunch train. The FEL interaction with these short bunches regeneratively amplifies the radiation intensity and broadens its spectrum, allowing for effective transmission of the x rays outside the crystal bandwidth. The spectral brightness of these x-ray pulses is about 2 to 3 orders of magnitude higher than that from a single-pass SASE FEL.},
doi = {10.1103/PhysRevLett.96.144801},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 14,
volume = 96,
place = {United States},
year = {2006},
month = {4}
}