학술논문
Gas-dynamic density downramp injection in a beam-driven plasma wakefield accelerator
Document Type
article
Author
J. P. Couperus Cabadağ; R. Pausch; S. Schöbel; M. Bussmann; Y.-Y. Chang; S. Corde; A. Debus; H. Ding; A. Döpp; F. M. Foerster; M. Gilljohann; F. Haberstroh; T. Heinemann; B. Hidding; S. Karsch; A. Koehler; O. Kononenko; A. Knetsch; T. Kurz; A. Martinez de la Ossa; A. Nutter; G. Raj; K. Steiniger; U. Schramm; P. Ufer; A. Irman
Source
Physical Review Research, Vol 3, Iss 4, p L042005 (2021)
Subject
Language
English
ISSN
2643-1564
Abstract
We present the experimental demonstration of density downramp injection at a gas-dynamic shock in a beam-driven plasma accelerator. The ultrashort driver electron beam with a peak-current exceeding 10 kA allows operation in the blowout regime and enables injection of electron witness bunches at gentle density ramps, i.e., longer than the plasma wavelength, which nurtures prospects for ultralow bunch emittance. By precision control over the position of injection we show that these bunches can be energy-tuned in acceleration gradients of near 120 GV m^{−1}.