Tunable monoenergetic electron beams from independently controllable laser-wakefield acceleration and injection

Authors

Grigory V. Golovin, University of Nebraska-LincolnFollow
Shouyuan Chen, University of Nebraska-LincolnFollow
Nathan D. Powers, University of Nebraska-LincolnFollow
Cheng Liu, University of Nebraska-LincolnFollow
Sudeep Banerjee, University of Nebraska–LincolnFollow
J Zhang, University of Nebraska-Lincoln
M Zeng, University of Nebraska-Lincoln
Z Sheng, University of Nebraska-Lincoln
Donald P. Umstadter, University of Nebraska-LincolnFollow

Date of this Version

2015

Citation

PHYSICAL REVIEW SPECIAL TOPICS - ACCELERATORS AND BEAMS 18, 011301 (2015)

Comments

Copyright 2015 Used by permission

Abstract

We report the results of experiments on laser-wakefield acceleration in a novel two-stage gas target with independently adjustable density and atomic-composition profiles.We were able to tailor these profiles in a way that led to the separation of the processes of electron injection and acceleration and permitted independent control of both. This resulted in the generation of stable, quasimonoenergetic electron beams with central energy tunable in 50–300 MeV range. For the first time, we are able to independently control the beam charge and energy spread over the entire tunability range.