Abstract
The use of external injection in plasma acceleration is attractive due to the high control over the electron beam parameters, which can be tailored to meet the plasma requirements and therefore preserve its quality during acceleration. However, using this technique requires an extremely fine synchronization between the driver and witness beams. In this paper, we present a new scheme for external injection in a laser-driven plasma accelerator that would allow, for the first time, sub-femtosecond timing jitter between laser pulse and electron beam.
Highlights
Over the last decades, laser-driven plasma wakefield acceleration (LWFA) [1] has been positioned as a possible alternative to conventional RF technology for future compact accelerators
One of the proposed methods for improving the beam quality is to use an external injection scheme, where the electron beam is provided by an external RF linac, rather than produced within the plasma
Operating a plasma accelerator with external injection brings in new technical challenges
Summary
Laser-driven plasma wakefield acceleration (LWFA) [1] has been positioned as a possible alternative to conventional RF technology for future compact accelerators. One of the proposed methods for improving the beam quality is to use an external injection scheme, where the electron beam is provided by an external RF linac, rather than produced within the plasma. This allows a better control of the beam properties so that the emittance and energy spread growth during acceleration can be minimized by properly shaping [10] and matching [11,12] the beam into the plasma. Operating a plasma accelerator with external injection brings in new technical challenges It requires an extremely low timing jitter between the drive laser and witness beam. Due to the small size of the accelerating plasma buckets (typically on the order of 10 – 100 μm) and the steep field gradients in them, an accuracy on the femtosecond level is required, smaller than what is available today in state-of-the-art setups
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
