Transition between Instability and Seeded Self-Modulation of a Relativistic Particle Bunch in Plasma
Plasma Physics
2021-04-28 v1 Accelerator Physics
Abstract
We use a relativistic ionization front to provide various initial transverse wakefield amplitudes for the self-modulation of a long proton bunch in plasma. We show experimentally that, with sufficient initial amplitude ( MV/m), the phase of the modulation along the bunch is reproducible from event to event, with 3 to 7% (of 2) rms variations all along the bunch. The phase is not reproducible for lower initial amplitudes. We observe the transition between these two regimes. Phase reproducibility is essential for deterministic external injection of particles to be accelerated.
Keywords
Cite
@article{arxiv.2012.09676,
title = {Transition between Instability and Seeded Self-Modulation of a Relativistic Particle Bunch in Plasma},
author = {F. Batsch and P. Muggli and R. Agnello and C. C. Ahdida and M. C. Amoedo Goncalves and Y. Andrebe and O. Apsimon and R. Apsimon and A. -M. Bachmann and M. A. Baistrukov and P. Blanchard and F. Braunmüller and P. N. Burrows and B. Buttenschön and A. Caldwell and J. Chappell and E. Chevallay and M. Chung and D. A. Cooke and H. Damerau and C. Davut and G. Demeter and H. L. Deubner 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. Furno and L. Garolfi and S. Gessner and I. Gorgisyan and A. A. Gorn and E. Granados and M. Granetzny and T. Graubner and O. Grulke and E. Gschwendtner and V. Hafych and A. Helm and J. R. Henderson and M. Hüther and I. Yu. Kargapolov and S. -Y. Kim and F. Kraus and M. Krupa and T. Lefevre 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 K. Moon and P. I. Morales Guzmán and M. Moreira and T. Nechaeva and E. Nowak and C. Pakuza and H. Panuganti and A. Pardons and A. Perera and J. Pucek and A. Pukhov and R. L. Ramjiawan and S. Rey and K. Rieger and O. Schmitz and E. Senes and L. O. Silva and R. Speroni and R. I. Spitsyn and C. Stollberg and A. Sublet and A. Topaloudis and N. Torrado and P. V. Tuev and M. Turner and F. Velotti and L. Verra and V. A. Verzilov and J. Vieira and H. Vincke and C. P. Welsch and M. Wendt and M. Wing and P. Wiwattananon and J. Wolfenden and B. Woolley and G. Xia and M. Zepp and G. Zevi Della Porta},
journal= {arXiv preprint arXiv:2012.09676},
year = {2021}
}
Comments
Letter and Supplemental Material, 6 figures, 8 pages