Experimental study of extended timescale dynamics of a plasma wakefield driven by a self-modulated proton bunch
Abstract
Plasma wakefield dynamics over timescales up to 800 ps, approximately 100 plasma periods, are studied experimentally at the Advanced Wakefield Experiment (AWAKE). The development of the longitudinal wakefield amplitude driven by a self-modulated proton bunch is measured using the external injection of witness electrons that sample the fields. In simulation, resonant excitation of the wakefield causes plasma electron trajectory crossing, resulting in the development of a potential outside the plasma boundary as electrons are transversely ejected. Trends consistent with the presence of this potential are experimentally measured and their dependence on wakefield amplitude are studied via seed laser timing scans and electron injection delay scans.
Keywords
Cite
@article{arxiv.2010.05715,
title = {Experimental study of extended timescale dynamics of a plasma wakefield driven by a self-modulated proton bunch},
author = {J. Chappell and E. Adli and R. Agnello and M. Aladi and Y. Andrebe and O. Apsimon and R. Apsimon and A. -M. Bachmann and M. A. Baistrukov and F. Batsch and M. Bergamaschi and P. Blanchard and P. N. Burrows and B. Buttenschön and A. Caldwell and E. Chevallay and M. Chung and D. A. Cooke and H. Damerau and C. Davut and G. Demeter and L. H. Deubner and A. Dexter and G. P. Djotyan and S. Doebert and J. Farmer and A. Fasoli and V. N. Fedosseev and R. Fiorito and R. A. Fonseca and F. Friebel and I. Turno and L. Garolfi and S. Gessner and B. Goddard and I. Gorgisyan and A. A. Gorn and E. Granados and M. Granetzny and O. Grulke and E. Gschwendtner and V. Hafych and A. Hartin and A. Helm and J. R. Henderson and A. Howling and M. Hüther and R. Jacquier and S. Jolly and I. Yu. Kargapolov and M. Á. Kedves and F. Keeble and M. D. Kelisani and S. -Y. Kim and F. Kraus and M. Krupa and T. Lefevre and Y. Li and L. Liang and S. Liu and N. Lopes and K. V. Lotov and M. Martyanov and S. Mazzoni and D. Medina Godoy and V. A. Minakov and J. T. Moody and P. I. Morales Guzmán and M. Moreira and H. Panuganti and A. Pardons and F. Peña Asmus and A. Perera and A. Petrenko and J. Pucek and A. Pukhov and B. Ráczkevi and R. L. Ramjiawan and S. Rey and H. Ruhl and H. Saberi and O. Schmitz and E. Senes and P. Sherwood and L. O. Silva and R. I. Spitsyn and P. V. Tuev and F. Velotti and L. Verra and V. A. Verzilov and J. Vieira and C. P. Welsch and B. Williamson and M. Wing and J. Wolfenden and B. Woolley and G. Dia and M. Zepp and G. Zevi Della Porta},
journal= {arXiv preprint arXiv:2010.05715},
year = {2021}
}
Comments
11 pages, 8 figures