TH2C —  Working Group C: Compact Light Sources   (31-Aug-23   11:00—12:30)
Chair: P. Piot, Northern Illinois University, DeKalb, Illinois, USA
Paper Title Page
TH2C1 The COXINEL Seeded Free Electron Laser Driven by the Laser Plasma Accelerator at HZDR 232
 
  • M.-E. Couprie, T. André, A. Berlioux, P. Berteaud, F. Blache, F. Bouvet, F. Briquez, Y. Dietrich, J.P. Duval, M. El Ajjouri, C. Herbeaux, N. Hubert, C.A. Kitégi, M. Labat, S. Lê, B. Leluan, A. Loulergue, F. Marteau, M.-H. Nguyen, D. Oumbarek Espinos, D. Pereira, J.P. Ricaud, P. Rommeluère, M. Sebdaoui, K. Tavakoli, M. Valléau, M.V. Vandenberghe, J. Vétéran, C. de Oliveira
    SOLEIL, Gif-sur-Yvette, France
  • I.A. Andriyash, J. Gautier, J.-P. Goddet, O.S. Kononenko, G. Lambert, J.P. Rousseau, A. Tafzi, C. Thaury
    LOA, Palaiseau, France
  • S. Bock, Y.Y. Chang, A.D. Debus, C. Eisenmann, R. Gebhardt, A. Ghaith, S. Grams, U. Helbig, A. Irman, M. Kuntzsch, R.G. Pausch, T. Püschel, S. Schöbel, U. Schramm, K. Steiniger, P. Ufer
    HZDR, Dresden, Germany
  • M. LaBerge
    The University of Texas at Austin, Austin, Texas, USA
  • V. Malka
    Weizmann Institute of Science, Physics, Rehovot, Israel
  • E. Roussel
    PhLAM/CERLA, Villeneuve d’Ascq, France
  
  Laser Plasma Accelerators know a tremendous development these recent years. Being able to reach up to ~100 GV/m, they open new perspectives for compact accelerators. Their performance can be qualified by a Free Electron Laser Application. We report here on the COXINEL seeded Free Electron Laser in the UV using the using high-quality electron beam generated by the 150 TW DRACO laser. The COXINEL line developed at Synchrotron SOLEIL (France) is first introduced. First electron beam transport and undulator radiation observation using electrons from the Laser Plasma Accelerator developed at Laboratoire d’Optique Appliquée (France) are described. Then, we present the first COXINEL results driven by the DRACO laser high performance plasma accelerator after its move to Helmholtz-Zentrum Dresden-Rossendorf (HZDR) (Germany): proper electron beam transport, undulator seed and undulator radiation temporal, spectral and spatial overlaps, allowing the seeded Free Electron Laser to be observed in the UV. Good agreement is found between measurements and simulations.  
DOI • reference for this paper ※ doi:10.18429/JACoW-FLS2023-TH2C1  
About • Received ※ 22 August 2023 — Revised ※ 29 August 2023 — Accepted ※ 30 August 2023 — Issued ※ 02 December 2023
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TH2C2 Development of Laser-Driven Plasma Accelerator Undulator Radiation Source at ELI-Beamlines 237
 
  • A.Y. Molodozhentsev
    Czech Republic Academy of Sciences, Institute of Physics, Prague, Czech Republic
  • J.T. Green, P. Zimmermann
    ELI-BEAMS, Prague, Czech Republic
  • A. Jancarek, S.M. Maity, A. Mondal, S.N. Niekrasz, E. Vishnyakov
    ELI ERIC, Dolni Brezany, Czech Republic
  
  Over the last decade, the mechanism of the laser-plasma acceleration of electrons was studied intensively by many experimental teams aiming to achieve high-energy, high-quality electron beams required to generate high-brilliance incoherent and, as the next step, coherent undulator photon radiation for wide-range applications. The laser-driven plasma accelerator based compact undulator radiation source is currently under commissioning at ELI-Beamlines (Institute of Physics CAS, Czech Republic) in the frame of the LUIS project, which aims to deliver stable and reliable incoherent photon beam with a wavelength around 5 nm to an user-station. As the result of this project, the electron beam parameters should be improved to generate the coherent photon radiation reaching the saturation of the photon pulse energy in a single-unit dedicated undulator (LPA-based FEL). An overview of the current status of the LUIS project will be presented, including the high-power high-repetition rate laser, acceleration of the electron beam in the plasma channel, the electron and photon beam-lines with relevant diagnostics. Challenges and future development beyond the LUIS project also being discussed.  
slides icon Slides TH2C2 [3.474 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-FLS2023-TH2C2  
About • Received ※ 23 August 2023 — Revised ※ 29 August 2023 — Accepted ※ 31 August 2023 — Issued ※ 02 December 2023
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TH2C3
 A Novel X-ray Free-electron Laser Scheme Based on Cascaded Laser Wakefield Accelerators  
 
  • H.Y. Xiao, J.F. Hua, F. Lipresenter, W. Lu
    TUB, Beijing, People’s Republic of China
  
  Laser wakefield accelerators (LWFA) present great potential to drive a free-electron laser (FEL) in a compact footprint because of the extremely high accelerating gradient. However, there are still many obstacles to overcome before the LWFA-driven FEL device can truly achieve exponential amplification and saturated output. These problems include how to resolve the phase slippage effect caused by the fs-level length of LWFA beams, and how to stably generate high-quality beams and preserve the quality during the transport. In this presentation, a novel scheme of X-ray FEL based on cascaded LWFAs is proposed aiming at addressing the above issues. High-quality electron beams with stable central energy and relatively long beam length can be generated using staged LWFAs. With a dedicated beamline design, the longitudinal phase space, beam length and inter-stage coupling are optimized, and start-to-end simulations show that such beams can drive the XFEL to saturation. In addition, the proposed scheme also possesses the capability to adjust FEL radiation bandwidth through precise longitudinal phase space steering. Our scheme provides a highly viable new route to realize LWFA-driven compact XFEL devices.  
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