20th Advanced Accelerator Concepts Workshop

Seeded FEL lasing of the COXINEL beamline driven by the HZDR plasma accelerator

Nov 7, 2022, 1:30 PM

20m

Salon A

Contributed Oral WG7 Oral: Radiation Generation and Advanced Concepts WG7: Radiation Generation and Advanced Concepts

Speaker

Dr Arie Irman (Helmholtz-Zentrum Dresden - Rossendorf, Bautzner Landstrasse 400, 01328 Dresden, Germany)

Description

Laser Plasma Accelerators (LPAs), harnessing gigavolt-per-centimeter accelerating fields, can generate high peak current, low emittance and GeV class electron beams paving the way for the realization of future compact free-electron lasers (FELs). Here, we report on the commissioning of the COXINEL beamline driven by the HZDR plasma accelerator and experimental demonstration of FEL lasing at 270 nm in a seeded configuration[1]. Control over the radiation wavelength is achieved with an improved bandwidth stability. Furthermore, the appearance of interference fringes, resulting from the interaction between the phase-locked emitted radiation and the seed, confirms longitudinal coherence, representing a key feature of such a seeded FEL. These results are cross-checked with simulations, ELEGANT for beam optics and GENESIS for FEL radiation. We anticipate a navigable pathway toward smaller-scale free-electron lasers at extreme ultra-violet wavelengths.

[1] M. Labat, J.P. Couperus Cabadağ, A. Ghaith, A. Irman, “Seeded free-electron laser drive by a compact laser plasma accelerator” accepted Nature Photonics (2022)

Acknowledgments

The COXINEL project was supported by European Research Council for the Advanced Grants COXINEL (340015, PI: M.E. Couprie), the EuPRAXIA design study (653782) and the Fondation de la Cooperation Scientique (QUAPEVA-2012-058T). The preliminary experiments at LOA were supported by the European Research Council (ERC) under the European Unions Horizon 2020 Research and Innovation Programme (Grant Agreement No. 339128, project X517
Five, PI: V. Malka and Grant Agreement No. 715807, project M-PAC, PI: S. Corde). The laser-electron acceleration project at HZDR is fully supported by the Helmholtz association under program Matter and Technology, topic Accelerator Research and Development. M.E.C., M.Labat were partially financed during the experimental run via the user access program in Laserlab Europe V (contract no. 871124). A.G. is financed by the Germany's Federal Ministry of Education and Research (BMBF) through the Verbundforschung LADIAG. E.R. is supported by the METEOR CNRS Momentum grant, the LABEX CEMPI (ANR-11-LABX-0007), the Ministry of Higher Education and Research, Hauts de France council and European Regional Development Fund (ERDF) through the Contrat de Projets Etat-Region (CPER) Photonics for Society (P4S). E.R., M.E.C., M.Labat are supported by the Agence Nationale de la Recherche through the ANR-DFG ULTRASYNC project (ANR-19-CE30-0031) project. The authors also thank J. Daillant and A. Nadji for their support at SOLEIL, P. Evtushenko for the streak camera.