Measurements of plasma wake-fields in the blow-out regime

Author

Barov, N. ; Conde, M. ; Rosenzweig, J.B. ; Schoessow, P. ; Cox, G. ; Gai, W. ; Konecny, R. ; Power, J. ; Simpson, J.

Author_Institution

Dept. of Phys. & Astron., California Univ., Los Angeles, CA, USA

Volume

1

fYear

1995

fDate

1-5 May 1995

Firstpage

631

Abstract

Initial results from nonlinear plasma wake-field experiments at the Argonne Wakefield Accelerator (AWA) test facility are reported. This nonlinear “blow-out” regime is characterized by the complete ejection of the plasma electrons from the beam channel. The wake-fields in this case are of notably high quality for acceleration of electrons, as the acceleration is independent of transverse position, and the focusing is linear and independent of longitudinal position within the electron depleted region, allowing self-consistent guiding of the majority of the driving electron beam. Initial measurements of the energy gain in a witness beam indicate a positive shift in its energy distribution of at least 0.5 MeV

Keywords

collective accelerators; electron accelerators; electron beam focusing; particle beam diagnostics; wakefield accelerators; AWA test facility; Argonne Wakefield Accelerator; beam channel; blow-out regime; complete ejection; electron depleted region; energy gain; focusing; nonlinear plasma wakefield experiments; plasma electrons; plasma wakefields measurements; positive energy distribution shift; self-consistent guiding; witness beam; Acceleration; Electron beams; Extraterrestrial measurements; Laser beams; Particle beam measurements; Particle beams; Plasma accelerators; Plasma density; Plasma measurements; Plasma waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1995., Proceedings of the 1995

Conference_Location

Dallas, TX

Print_ISBN

0-7803-2934-1

Type

conf

DOI

10.1109/PAC.1995.504739

Filename

504739