Generation of High-Current Proton Beams With a Low Energy Spread by Phase-Stable Acceleration (PSA)

Author

Liu, B.C. ; He, Z.H. ; Yan, X.Q. ; Sheng, Z.M. ; Guo, Z.Y. ; Lu, Y.R. ; Chen, J.E.

Author_Institution

State Key Lab. of Nucl. Phys. & Technol., Peking Univ., Beijing

Volume

36

Issue

4

fYear

2008

Firstpage

1854

Lastpage

1856

Abstract

The acceleration of protons in the interaction of a circularly polarized laser pulse with a thin foil is investigated. For circular-polarization laser pulses, the quasi-equilibrium for electrons is established due to the light pressure and the electrostatic field built up at the interacting front of the laser pulse. The protons located within the skin depth of the laser pulse can be synchronously accelerated and bunched like phase-stable acceleration in a conventional radio-frequency accelerator, so that a high-current proton beam with a low energy spread is generated. It has been proved by 1-D particle-in-cell simulations.

Keywords

accelerator RF systems; linear accelerators; plasma accelerators; plasma production by laser; plasma simulation; proton accelerators; proton beams; PSA; circularly polarized laser pulse; conventional radio-frequency accelerator; electrostatic field; high-current proton beams generation; laser-plasma interaction; linac; particle-in-cell simulations; phase-stable acceleration; protons acceleration; Acceleration; Electrons; Electrostatics; Optical polarization; Optical pulse generation; Optical pulses; Particle beams; Protons; Radio frequency; Skin; Circularly polarized (CP) laser; particle-in-cell (PIC); phase stable; radio-frequency accelerator;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2008.927161

Filename

4599042