Study of the Electron Transport in the COXINEL FEL Beamline Using a Laser-Plasma Accelerated Electron Beam
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Thomas André
- Function : Author
- PersonId : 183870
- IdHAL : tandre
- ORCID : 0000-0002-7650-4999
- IdRef : 23467511X
Sebastien Corde
- Function : Author
- PersonId : 4412
- IdHAL : sebastien-corde
- ORCID : 0000-0002-5015-0387
- IdRef : 168213613
Victor Malka
- Function : Author
- PersonId : 4336
- IdHAL : victor-malka
- ORCID : 0000-0002-0488-2587
- IdRef : 108077799
Cedric Thaury
- Function : Author
- PersonId : 4363
- IdHAL : cedric-thaury
- ORCID : 0000-0002-6537-8392
- IdRef : 134340183
Abstract
The ERC Advanced Grant COXINEL aims at demonstrating free electron laser (FEL) at 200 nm, based on a laser-plasma accelerator (LPA). To achieve the FEL amplification a transport line was designed to manipulate the beam properties. The 10 m long COXINEL line comprises a first triplet of permanent-magnet variable-strength quadrupoles (QUAPEVA), which handles the large divergence of LPA electrons, a magnetic chicane, which reduces the slice energy spread, and finally a set of electromagnetic quadrupoles, which provides a chromatic focusing in a 2-m undulator. Electrons were successfully transported through the line from LPA with ionization-assisted self-injection (broad energy spectra up to~250 MeV, few-milliradian divergence).