Characterization of undulator radiation from a compact laser plasma acceleration source

A. Ghaith; D. Oumbarek; M. Labat; O. Kononenko; A. Loulergue; E. Roussel; M. Valléau; S. Corde; C. Thaury; M. E. Couprie

doi:10.1117/12.2569386

21 August 2020 Characterization of undulator radiation from a compact laser plasma acceleration source

A. Ghaith, D. Oumbarek, M. Labat, O. Kononenko, A. Loulergue, E. Roussel, M. Valléau, S. Corde, C. Thaury, M. E. Couprie

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Proceedings Volume 11493, Advances in Computational Methods for X-Ray Optics V; 114930Y (2020) https://doi.org/10.1117/12.2569386
Event: SPIE Optical Engineering + Applications, 2020, Online Only

Abstract

While synchrotron light facilities and Free Electron Lasers (FELs) are widely used for matter investigation, Laser Plasma Acceleration (LPA), delivering nowadays GeV electron beams in few centimeter accelerating distance, can be considered to drive undulator radiation and FEL. We report on the generation of undulator radiation on the COXINEL dedicated manipulation line designed for an FEL application. The LPA large divergence is handled with variable gradient permanent magnet quadrupoles and the high energy spread is reduced via a magnetic chicane. We evidence the undulator spatio-spectral signature on the first and second harmonics while measuring the radiation focused onto the entrance slit of a spectrometer equipped with a CDD camera. A good agreement is found between measurements and SRW simulations, using electron beam parameters in the undulator deduced from the measured initial electron beam parameters transported along the beamline. In addition, ray optics approach is compared to Fourier optics for the radiation propagation through optical elements.

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A. Ghaith, D. Oumbarek, M. Labat, O. Kononenko, A. Loulergue, E. Roussel, M. Valléau, S. Corde, C. Thaury, and M. E. Couprie "Characterization of undulator radiation from a compact laser plasma acceleration source", Proc. SPIE 11493, Advances in Computational Methods for X-Ray Optics V, 114930Y (21 August 2020); https://doi.org/10.1117/12.2569386

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