A hard X-ray self-amplified spontaneous emission free-electron laser optimization using evolutionary algorithms for dedicated user applications

Authors

DİDEM KETENOĞLU
GAZİ ERKAN BOSTANCI
AYHAN AYDIN
BORA KETENOĞLU

DOI

10.3906/fiz-1909-5

Abstract

Accelerator-based fourth-generation light sources are utilized in a wide range of interdisciplinary applications such as nanotechnology, materials science, biosciences, and medicine. A hard X-ray free-electron laser (FEL), as a state-of-the-art light source, was optimized using evolutionary algorithms for dedicated user applications such as X-ray Raman scattering (XRS), resonant inelastic X-ray scattering (RIXS), and X-ray emission spectroscopies (XES). Optimal parameter sets were obtained for an in-vacuum planar undulator driven by an 8 GeV electron beam. Performance parameters of self-amplified spontaneous emission (SASE) operation (i.e. optimized SASE performance parameters through evolutionary algorithms) were found to be consistent with operating X-ray FEL facilities around the world. It is shown that FEL characteristics for specific user experiments can be optimized by finding several evolutionary algorithm solutions within the range of 5 keV to 10 keV.

Keywords

X-ray free-electron laser, undulator, evolutionary algorithms, optimization, inelastic X-ray scattering

First Page

551

Last Page

555

Recommended Citation

KETENOĞLU, DİDEM; BOSTANCI, GAZİ ERKAN; AYDIN, AYHAN; and KETENOĞLU, BORA (2019) "A hard X-ray self-amplified spontaneous emission free-electron laser optimization using evolutionary algorithms for dedicated user applications," Turkish Journal of Physics: Vol. 43: No. 6, Article 2. https://doi.org/10.3906/fiz-1909-5
Available at: https://journals.tubitak.gov.tr/physics/vol43/iss6/2