Transportation and Manipulation of a Laser Plasma Acceleration Beam
- Fonction : Auteur
- PersonId : 183870
- IdHAL : tandre
- ORCID : 0000-0002-7650-4999
- IdRef : 23467511X
- Fonction : Auteur
- PersonId : 1168204
- IdHAL : igor-andriyash
- Fonction : Auteur
- PersonId : 4412
- IdHAL : sebastien-corde
- ORCID : 0000-0002-5015-0387
- IdRef : 168213613
- Fonction : Auteur
- PersonId : 4336
- IdHAL : victor-malka
- ORCID : 0000-0002-0488-2587
- IdRef : 108077799
- Fonction : Auteur
- PersonId : 4363
- IdHAL : cedric-thaury
- ORCID : 0000-0002-6537-8392
- IdRef : 134340183
Résumé
The ERC Advanced Grant COXINEL aims at demonstrating free electron laser amplification, at a resonant wavelength of 200 nm, based on a laser plasma acceleration source. To achieve the amplification, a 10 m long dedicated transport line was designed to manipulate the beam qualities. It starts with a triplet of permanent magnet with tunable gradient quadrupoles (QUAPEVA) that handles the highly divergent electron beam, a demixing chicane with a slit to reduce the energy spread per slice, and a set of electromagnetic quadrupoles to provide a chromatic focusing in a 2 m long cryogenic undulator. Electrons of energy 176 MeV were successfully transported throughout the line, where the beam positioning and dispersion were controlled efficiently thanks to a specific beam based alignment method, as well as the energy range by varying the slit width. Observations of undulator radiation for different undulator gaps are reported.