1 December 1991 Simulation of free-electron lasers in the presence of measured magnetic field errors of the undulator
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Abstract
The intrinsic errors of actual magnetic undulators yield a degraded performance of the free electron laser (FEL) with respect to that obtained from ideal models of the magnetic undulator. The impact of these errors have been theoretically and computationally investigated for simple error models, in which the field errors have uniform or sinusoidal spatial extent and amplitudes which are statistically independent for each magnet pole piece. These simple models have been recently extended to include more complicated spatial structures and statistically correlated field errors in the analysis of the FEL performance. The measured data of the National Institute of Standards and Technology (NIST) undulator will be fit by the more advanced models. We present numerical simulation of the FEL in the presence of measured field errors.
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William P. Marable, William P. Marable, Cha-Mei Tang, Cha-Mei Tang, Eric Esarey, Eric Esarey, } "Simulation of free-electron lasers in the presence of measured magnetic field errors of the undulator", Proc. SPIE 1552, Short-Wavelength Radiation Sources, (1 December 1991); doi: 10.1117/12.50595; https://doi.org/10.1117/12.50595
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