Downramp-assisted underdense photocathode electron bunch generation in plasma wakefield accelerators
Accelerator Physics
2014-12-17 v1 Plasma Physics
Abstract
It is shown that the requirements for high quality electron bunch generation and trapping from an underdense photocathode in plasma wakefield accelerators can be substantially relaxed through localizing it on a plasma density downramp. This depresses the phase velocity of the accelerating electric field until the generated electrons are in phase, allowing for trapping in shallow trapping potentials. As a consequence the underdense photocathode technique is applicable by a much larger number of accelerator facilities. Furthermore, dark current generation is effectively suppressed.
Keywords
Cite
@article{arxiv.1412.4844,
title = {Downramp-assisted underdense photocathode electron bunch generation in plasma wakefield accelerators},
author = {Alexander Knetsch and Oliver Karger and Georg Wittig and Henning Groth and Yunfeng Xi and Aihua Deng and James Benjamin Rosenzweig and David Leslie Bruhwiler and Johnathan Smith and Dino Anthony Jaroszynski and Zheng-Ming Sheng and Grace Gloria Manahan and Guoxing Xia and Steven Jamison and Bernhard Hidding},
journal= {arXiv preprint arXiv:1412.4844},
year = {2014}
}
Comments
4 pages, 3 figures