Initial Experiments on Laser-Based Electron Acceleration at RRCAT, Indore

Author

Bobbili, Sanyasi Rao ; Naik, Prasad Anant ; Arora, Vipul ; Singhal, Himanshu ; Chakravarty, Uday ; Khan, Riyaz Ahmed ; Gupta, Parshotam Dass ; Nakajima, Kazuhisa ; Kameshima, Takashi

Author_Institution

Laser Plasma Div., Raja Ramanna Centre for Adv. Technol., Indore

Volume

36

Issue

4

fYear

2008

Firstpage

1694

Lastpage

1698

Abstract

Initial experiments on electron acceleration in self- modulated laser wake-field acceleration regime have been carried out at the Raja Ramanna Centre for Advanced Technology, Indore, India, using a 6-TW 45-fs Ti:sapphire laser. The laser beam was focused to an intensity >10¹⁸ W/cm² on a supersonic helium gas jet. Total charge and spatial profile of the electron beam produced were measured using an integrating current transformer and a phosphor screen, respectively. For a plasma density of 5 times 10¹⁹-10²⁰ cm^-3, electron beam was produced with a high charge of 2.5-2.7 nC/shot and a divergence of ~10-~100 mrad.

Keywords

electron accelerators; electron beams; laser beam applications; particle beam injection; plasma accelerators; plasma density; plasma jets; plasma light propagation; sapphire; solid lasers; titanium; wakefield accelerators; Al₂O₃:Ti; RRCAT; Raja Ramanna Centre for Advanced Technology; Ti:sapphire laser; current transformer; electron beam production; laser-based electron acceleration; phosphor screen; plasma density; self-injected electrons; self-modulated laser wake-field acceleration; supersonic helium gas jet; Acceleration; Charge measurement; Current measurement; Current transformers; Electron beams; Gas lasers; Helium; Laser beams; Phosphors; Plasma measurements; Electron acceleration; self-modulated laser; ultrashort-pulse laser; wake-field acceleration;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2008.928530

Filename

4598934