Combined plasma lens and rephasing stage for a laser wakefield accelerator.

Autor:	Gustafsson, Cornelia, Löfquist, Erik, Svendsen, Kristoffer, Angella, Andrea, Persson, Anders, Lundh, Olle
Předmět:	LASER plasma accelerators PARTICLE beam bunching PLASMA density ELECTRON plasma ELECTRONS
Zdroj:	Scientific Reports; 11/1/2024, Vol. 14 Issue 1, p1-8, 8p
Abstrakt:	Electrons from a laser wakefield accelerator have a limited energy gain due to dephasing and are prone to emittance growth, causing a large divergence. In this paper, we experimentally show that adjusting the plasma density profile can address both issues. Shock-assisted ionisation injection is used to produce 100 MeV quasi-monoenergetic electron bunches in the primary part of the accelerator. Downstream from the accelerator, a second, independently tuneable density region is added, which can be used to either boost the energy of the electron bunches or as a plasma lens for significant divergence reduction. An additional energy gain of 25% and a 40% divergence reduction are obtained. Theoretical models validate the effects. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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