A laser wakefield acceleration facility using SG-II petawatt laser system

被引：2

作者：

Liang, Xiao ^{[1
]}

Yi, Youjian ^{[1
,2
]}

Li, Song ^{[3
,4
]}

Zhu, Ping ^{[1
]}

Xie, Xinglong ^{[1
,2
]}

Liu, Huiya ^{[1
]}

Mu, GuangJin ^{[1
]}

Liu, ZhiGang ^{[1
]}

Guo, Ailin ^{[1
]}

Kang, Jun ^{[1
]}

Yang, Qingwei ^{[1
]}

Zhu, Haidong ^{[1
]}

Gao, Qi ^{[1
]}

Sun, Meizhi ^{[1
]}

Lu, Haiyang ^{[5
]}

Ma, Yanyun ^{[6
]}

Mondal, Sudipta ^{[3
]}

Papp, Daniel ^{[3
]}

Majorosi, Szilard ^{[3
]}

Lecz, Zsolt ^{[3
]}

Andreev, Alexander ^{[3
,7
]}

Kahaly, Subhendu ^{[3
]}

Kamperidis, Christos ^{[3
]}

Hafz, Nasr A. M. ^{[3
]}

Zhu, Jianqiang ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Natl Lab High Power Laser & Phys, Shanghai 201800, Peoples R China

[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, 19 A Yuquan Rd, Beijing 100049, Peoples R China

[3] ELI HU Nonprofit Ltd, ELI ALPS, Wolfgang Sandner Utca 3, H-6728 Szeged, Hungary

[4] Deutsch Elekt Synchrotron DESY, Notkestr 85, D-22607 Hamburg, Germany

[5] Shenzhen Technol Univ, Coll Engn Phys, Ctr Adv Mat Diagnost Technol, Shenzhen 518118, Peoples R China

[6] Natl Univ Def Technol, Coll Adv Interdisciplinary Studies, Changsha 410073, Peoples R China

[7] Max Born Inst, Berlin, Germany

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2022年 / 93卷 / 03期

基金：

中国国家自然科学基金;

关键词：

ELECTRON-BEAMS; DRIVEN; RADIATION; PLASMAS; PHYSICS;

D O I：

10.1063/5.0071761

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Laser wakefield acceleration (LWFA) using PW-class laser pulses generally requires cm-scale laser-plasma interaction Rayleigh length, which can be realized by focusing such pulses inside a long underdense plasma with a large f-number focusing optic. Here, we present a new PW-based LWFA instrument at the SG-II 5 PW laser facility, which employs f/23 focusing. The setup also adapted an online probing of the plasma density via Nomarski interferometry using a probe laser beam having 30 fs pulse duration. By focusing 1-PW, 30-fs laser pulses down to a focal spot of 230 mu m, the peak laser intensity reached a mild-relativistic level of 2.6 x 10(18) W/cm(2), a level modest for standard LWFA experiments. Despite the large aspect ratio of >25:1 (transverse to longitudinal dimensions) of the laser pulse, electron beams were observed in our experiment only when the laser pulse experienced relativistic self-focusing at high gas-pressure thresholds, corresponding to plasma densities higher than 3 x 10(18) cm(-3). Published under an exclusive license by AIP Publishing.

引用

页数：11

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