@article{14a6f6cb49224440b022b9a2e179f355,
title = "Tunable High Spatio-Spectral Purity Undulator Radiation from a Transported Laser Plasma Accelerated Electron Beam",
abstract = "Undulator based synchrotron light sources and Free Electron Lasers (FELs) are valuable modern probes of matter with high temporal and spatial resolution. Laser Plasma Accelerators (LPAs), delivering GeV electron beams in few centimeters, are good candidates for future compact light sources. However the barriers set by the large energy spread, divergence and shot-to-shot fluctuations require a specific transport line, to shape the electron beam phase space for achieving ultrashort undulator synchrotron radiation suitable for users and even for achieving FEL amplification. Proof-of-principle LPA based undulator emission, with strong electron focusing or transport, does not yet exhibit the full specific radiation properties. We report on the generation of undulator radiation with an LPA beam based manipulation in a dedicated transport line with versatile properties. After evidencing the specific spatio-spectral signature, we tune the resonant wavelength within 200–300 nm by modification of the electron beam energy and the undulator field. We achieve a wavelength stability of 2.6\%. We demonstrate that we can control the spatio-spectral purity and spectral brightness by reducing the energy range inside the chicane. We have also observed the second harmonic emission of the undulator.",
author = "A. Ghaith and D. Oumbarek and E. Roussel and S. Corde and M. Labat and T. Andre and A. Loulergue and Andriyash, \{I. A.\} and O. Chubar and O. Kononenko and S. Smartsev and O. Marcouille and C. Kitegi and F. Marteau and M. Valleau and C. Thaury and J. Gautier and S. Sebban and A. Tafzi and F. Blache and F. Briquez and K. Tavakoli and A. Carcy and F. Bouvet and Y. Dietrich and G. Lambert and N. Hubert and \{El Ajjouri\}, M. and F. Polack and D. Dennetiere and N. Leclercq and P. Rommeluere and Duval, \{J. -P.\} and M. Sebdaoui and C. Bourgoin and A. Lestrade and C. Benabderrahmane and J. Veteran and P. Berteaud and \{De Oliveira\}, C. and Goddet, \{J. P.\} and C. Herbeaux and C. Szwaj and S. Bielawski and V. Malka and Couprie, \{M. -E.\}",
note = "This work was partially supported by the FP7 Ideas: European Research Council for the Advanced Grants COXINEL (340015, PI: M.-E. Couprie) and X-Five (339128, PI: V. Malka), the EuPRAXIA design study (653782), the Fondation de la Coop{\'e}ration Scientifique (QUAPEVA-2012-058T), the Agence Nationale de la Recherche (ANR-10-LABX-0039-PALM, LABEX CEMPI ANR-11-LABX-0007), Ministry of Higher Education and Research, Hauts de France council and European Regional Development Fund (Contrat de Projets Etat-R{\'e}gion CPER Photonics for Society P4S). The authors acknowledge J. Daillant, A. Nadji, A. Taleb and A. Rousse for their support. The authors thank A. Thompson and S. Podgorny for English check. The authors would like also to thank members of the Accelerator and Engineering Division and of the Experimental Division of SOLEIL for their help, J. L. Lancelot and his team at Sigmaphi for the joint development of the QUAPEVA magnets. S.C., J.G., J.P.G., O. K. G.L., B.M., V.M., S. Se., S.Sm., A.T., C.T. worked on the laser based electron acceleration. The optics was designed by A. Lo., simulations of the transport were done by T. A., A. Lo, D.O. and E.R. Undulator radiation was modelised by A.G., O.C. with the help of M.E.C., O.M., M.L. Equipments were prepared by C. Be., P.B., F.Bl., F. Bo, F.Br, M.E.C., Y.D., A.G., C.K., A. Lo, F.M., M.V., J.V. for the magnetic elements and the undulator, T.A., M.E.C., M.E.A., D.D., N.H., G.L., A. Lo, M.L., F.P., C.T. for the diagnostics, with in particular T.A., A.G., D.D., M.L., D.O., F.P., E.R. for the photon spectrometer and S.C., D.O., S.S., E.R., C.T. for the electron spectrometer. A.C., K.T., C.D.O. worked on the mechanical design and assembly, J.P.D., C.H., P. Rommelu{\`e}re on the vacuum, T.A., C. Bo., M.E.C., M.L., A. Le, F.M., M.S., M.V. on the alignment, T.A., I.A.A., F. Bl., F. Br, L.C., C.E., M.L., N.L., A. Lo, E.R., M.V. on the control system and high level application. T.A., I.A.A., S.C., M.E.C., M.E.A., J.G., J.P.G., A.G., N.H., O.K., A. Lo, G.L., D.O., E.R., S. Sm., C.T. worked on the experiment. Data were analysed by M.E.C., A.G., E.R., S.B., C.S., C.E. (undulator radiation), T.A., S.C., M.E.C., A. Lo, D.O., E.R., S. Sm., S. Se. (electron beam), T.A., E.C., A. Lo, D.O., E.R. (beam transport). The paper was written by M.E.C., A.G., D.O., S.B.E.R.",
year = "2019",
month = dec,
day = "13",
doi = "10.1038/s41598-019-55209-4",
language = "الإنجليزيّة",
volume = "9",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",
}