Combined plasma lens and rephasing stage for a laser wakefield accelerator

被引：0

作者：

Gustafsson, Cornelia ^{[1
]}

Lofquist, Erik ^{[1
]}

Svendsen, Kristoffer ^{[1
]}

Angella, Andrea ^{[1
]}

Persson, Anders ^{[1
]}

Lundh, Olle ^{[1
]}

机构：

[1] Lund Univ, Dept Phys, POB 118, S-22100 Lund, Sweden

来源：

SCIENTIFIC REPORTS | 2024年 / 14卷 / 01期

基金：

瑞典研究理事会; 欧盟地平线“2020”;

关键词：

ELECTRONS; BEAMS;

D O I：

10.1038/s41598-024-78143-6

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页数：8

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