Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Volume 737, Issue -, Pages 237-241Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nima.2013.11.020
Keywords
FEL; Slippage effect; Phase error; HGHG; EEHG; Noise degradation
Categories
Funding
- Major State Basic Research Development Program of China [2011CB808300]
- National Natural Science Foundation of China [11175240, 11205234, 11322550]
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Seeded free-electron lasers (FELs) hold a great promise for generating high brilliant radiation with a narrow bandwidth. However, it has been pointed out that the initial seed laser noise will be amplified in the harmonic up-conversion process, which may degrade the output radiation pulse quality of a seeded FEL. In this paper, theoretical and simulation studies of seeded FEL schemes with seed laser imperfections are presented. It is found that the slippage effect in the modulator will slow down the multiplication process of the seed laser phase error, which may aid in the production of transform-limited short-wavelength pulses for seeded FELs. (C) 2013 Elsevier B.V. All rights reserved.
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