Independent control of laser wakefield-accelerated electron-beam parameters

被引：0

作者：

Golovin, G. ^{[1
]}

Chen, S. ^{[1
]}

Powers, N. ^{[1
]}

Liu, C. ^{[1
]}

Banerjee, S. ^{[1
]}

Zhang, J. ^{[1
]}

Zeng, M. ^{[2
]}

Sheng, Z. ^{[2
]}

Umstadter, D. ^{[1
]}

机构：

[1] Univ Nebraska, Diocles Extreme Light Lab, Lincoln, NE 68508 USA

[2] Shanghai Jiao Tong Univ, Shanghai 200240, Peoples R China

来源：

LASER ACCELERATION OF ELECTRONS, PROTONS, AND IONS III; AND MEDICAL APPLICATIONS OF LASER-GENERATED BEAMS OF PARTICLES III | 2015年 / 9514卷

关键词：

laser; wakefield; acceleration; ionization-assisted injection; INJECTION; RAYS;

D O I：

10.1117/12.2182707

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

By employing a pair of partially overlapped supersonic gas jets, we separated injection and acceleration stages of laser wakefield acceleration to produce stable, monoenergetic, and tunable electron beams. The first jet (injector) utilized a He/N-2 mixture and resulted in electrons injected into the wake via ionization-assisted injection. These electrons were then accelerated in the second jet (accelerator) using pure He. By changing length and plasma density of the accelerator jet, we were able to tune electron energy in the 50 - 300 MeV range with energy spread of 10-30% and 20 pC charge. Simulations show that the injection region is limited within the overlap of the jets.

引用

页数：7

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