Abstract
The EuPRAXIA (European Particle Research Accelerator with excellence In Applications) project aims at producing a conceptual design for the worldwide plasma-based accelerator facility, capable of delivering multi-GeV electron beams with high quality. This accelerator facility will be used for various user applications such as compact X-ray sources for medical imaging and high-energy physics detector tests. EuPRAXIA explores different approaches to plasma acceleration techniques. Laser-driven plasma wakefield acceleration with external injection of an RF-generated electron beam is one of the basic research directions of EuPRAXIA. We present studies of electron beam acceleration to GeV energies by a two-stage laser wakefield acceleration with external injection from an RF accelerator. Electron beam injection, acceleration and extraction from the plasma, using particle-in-cell simulations, are investigated.
Highlights
The remarkable progress in laser technology over the past decade [1, 2] allows Laser-plasma accelerators (LPA) to be seen as the leading technology in advanced accelerators standing out through enormous accelerating gradients on the order of 10-100 GV/m [3]
Despite prominent experimental and theoretical achievements in the field of laser wakefield acceleration (LWFA), among others the demonstration of the production of GeV-class electron beams [4, 5], the realization of a LPA matching the demanding requirements on beam quality and stability for applications such as FreeElectron-Lasers (FEL) remains a challenge
Key parameters of electron beams delivered by LPAs, such as energy spread and normalized emittance, are still worse than those achieved in conventional accelerators
Summary
The remarkable progress in laser technology over the past decade [1, 2] allows Laser-plasma accelerators (LPA) to be seen as the leading technology in advanced accelerators standing out through enormous accelerating gradients on the order of 10-100 GV/m [3]. We present an extension of numerical studies reported in [6] on quality-preserving acceleration of an electron beam by a laser-driven plasma accelerator with external injection from an RF linac.
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