Projects per year
Abstract
A model of a Free Electron Laser operating with an elliptically polarised undulator is presented. The equations describing the FEL interaction, including resonant harmonic radiation fields, are averaged over an undulator period and generate a generalised Bessel function scaling factor, similar to that of planar undulator FEL theory. Comparison between simulations of the averaged model with those of an unaveraged model show very good agreement in the linear regime. Two unexpected results were found. Firstly, an increased coupling to harmonics for elliptical rather than planar polarisarised undulators. Secondly, and thought to be unrelated to the undulator polarisation, a signifcantly different evolution between the averaged and unaveraged simulations of the harmonic radiation evolution approaching FEL saturation.
Original language | English |
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Article number | 062003 |
Number of pages | 14 |
Journal | New Journal of Physics |
Volume | 18 |
DOIs | |
Publication status | Published - 20 Jun 2016 |
Keywords
- free electron laser
- harmonic radiation fields
- tunable radiation
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Dive into the research topics of 'Modelling elliptically polarised free electron lasers'. Together they form a unique fingerprint.Profiles
Projects
- 1 Finished
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Simulations for Future X-ray Free electron Lasers
McNeil, B. (Principal Investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/02/15 → 31/01/17
Project: Research
Datasets
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Designing Future X-ray FELs
McNeil, B. (Creator) & Campbell, L. (Contributor), University of Strathclyde, 25 Oct 2016
DOI: 10.15129/ab8ae74e-5de4-479f-a747-88c8d9f28dcc, http://www.xrayfels.co.uk/
Dataset