Polarized Laser-WakeField-Accelerated Kiloampere Electron Beams

Area of Science:

• Particle Physics
• Material Science
• Accelerator Physics

Background:

• High-flux polarized particle beams are crucial for studying spin-dependent phenomena.
• Applications include searches for physics beyond the Standard Model and materials analysis.

Purpose of the Study:

• To demonstrate the production of kiloampere polarized electron beams via laser-wakefield acceleration.
• To present a theoretical model for electron beam polarization and validate it with simulations.

Main Methods:

• Laser-wakefield acceleration of electrons from a gas target.
• Development of a theoretical model for electron beam polarization.
• Self-consistent three-dimensional particle-in-cell simulations incorporating spin dynamics.

Main Results:

• Kiloampere polarized electron beams achieved.
• Depolarization as low as 10% demonstrated by optimizing laser and gas parameters.
• Flux increased by 4 orders of magnitude compared to existing sources.

Conclusions:

• Laser-wakefield acceleration offers a promising new pathway for generating high-flux polarized electron beams.
• This advancement has significant implications for fundamental physics research and materials science applications.