| Literature DB >> 30735413 |
R D'Arcy1, S Wesch1, A Aschikhin1,2, S Bohlen1,2, C Behrens1, M J Garland1, L Goldberg1,2, P Gonzalez1,2, A Knetsch1, V Libov1,2, A Martinez de la Ossa1,2, M Meisel1,2, T J Mehrling1,3, P Niknejadi1, K Poder1, J-H Röckemann1,2, L Schaper1, B Schmidt1, S Schröder1,2, C Palmer1,4, J-P Schwinkendorf1,2, B Sheeran1,2, M J V Streeter1,5, G Tauscher1,2, V Wacker1, J Osterhoff1.
Abstract
A tunable plasma-based energy dechirper has been developed at FLASHForward to remove the correlated energy spread of a 681 MeV electron bunch. Through the interaction of the bunch with wakefields excited in plasma the projected energy spread was reduced from a FWHM of 1.31% to 0.33% without reducing the stability of the incoming beam. The experimental results for variable plasma density are in good agreement with analytic predictions and three-dimensional simulations. The proof-of-principle dechirping strength of 1.8 GeV/mm/m significantly exceeds those demonstrated for competing state-of-the-art techniques and may be key to future plasma wakefield-based free-electron lasers and high energy physics facilities, where large intrinsic chirps need to be removed.Year: 2019 PMID： 30735413 DOI： 10.1103/PhysRevLett.122.034801
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161