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Control of laser plasma accelerated electrons for light sources
T André1,2, I A Andriyash1, A Loulergue1
1Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, 91192, France.
Nature Communications
|April 8, 2018
Summary
Laser wakefield acceleration (LWFA) produces high-quality electron beams. A dedicated transport line improves beam performance, enabling applications requiring precise electron beams for radiation generation.
Area of Science:
- Plasma Physics and Laser-driven Acceleration
Background:
- Laser wakefield acceleration (LWFA) generates high-energy, femtosecond electron beams with gigaelectron-volts per centimeter energy gains.
- Current LWFA applications are limited by beam quality issues, including energy spread, divergence, and shot-to-shot fluctuations.
Purpose of the Study:
- To demonstrate mitigation of inherent LWFA beam weaknesses using a dedicated transport line.
- To manipulate the longitudinal and transverse phase-space of LWFA electron beams.
- To enable applications requiring high-quality electron beams.
Main Methods:
- Utilized a dedicated transport line to correct orbit mis-steerings and minimize dispersion.
- Employed specially designed variable strength quadrupoles for beam manipulation.
- Selected a specific energy range using a magnetic chicane and slit.
Main Results:
- Successfully manipulated the phase-space of LWFA electron beams.
- Achieved a matched electron beam after an 8-meter transport path.
- Observed undulator synchrotron radiation, indicating improved beam quality.
Conclusions:
- A dedicated transport line can significantly improve LWFA electron beam quality.
- Phase-space manipulation techniques address key limitations of LWFA beams.
- The results pave the way for advanced applications demanding high-beam-quality electron sources.
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