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Transition between Instability and Seeded Self-Modulation of a Relativistic Particle Bunch in Plasma

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arxiv 2012.09676 v1 pith:Q7RQTIHO submitted 2020-12-17 physics.plasm-ph physics.acc-ph

F. Batsch , P. Muggli , R. Agnello , C.C. Ahdida , M.C. Amoedo Goncalves , Y. Andrebe , O. Apsimon , R. Apsimon
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A.-M. Bachmann M.A. Baistrukov P. Blanchard F. Braunmüller P.N. Burrows B. Buttenschön A. Caldwell J. Chappell E. Chevallay M. Chung D.A. Cooke H. Damerau C. Davut G. Demeter H.L. Deubner S. Doebert J. Farmer A. Fasoli V.N. Fedosseev R. Fiorito R.A. Fonseca F. Friebel I. Furno L. Garolfi S. Gessner I. Gorgisyan A.A. Gorn E. Granados M. Granetzny T. Graubner O. Grulke E. Gschwendtner V. Hafych A. Helm J.R. Henderson M. Hüther I.Yu. Kargapolov S.-Y. Kim F. Kraus M. Krupa T. Lefevre L. Liang S. Liu N. Lopes K.V. Lotov M. Martyanov S. Mazzoni D. Medina Godoy V.A. Minakov J.T. Moody K. Moon P.I. Morales Guzmán M. Moreira T. Nechaeva E. Nowak C. Pakuza H. Panuganti A. Pardons A. Perera J. Pucek A. Pukhov R.L. Ramjiawan S. Rey K. Rieger O. Schmitz E. Senes L.O. Silva R. Speroni R.I. Spitsyn C. Stollberg A. Sublet A. Topaloudis N. Torrado P.V. Tuev M. Turner F. Velotti L. Verra V.A. Verzilov J. Vieira H. Vincke C.P. Welsch M. Wendt M. Wing P. Wiwattananon J. Wolfenden B. Woolley G. Xia M. Zepp G. Zevi Della Porta (The AWAKE Collaboration)
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classification physics.plasm-phphysics.acc-ph
keywords bunchinitialphasealongamplitudeseventplasmarelativistic
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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 ($\ge(4.1\pm0.4)$ MV/m), the phase of the modulation along the bunch is reproducible from event to event, with 3 to 7% (of 2$\pi$) 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.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Numerical simulations of electron acceleration driven by heavy ion beams in plasma with alternating density gradients

    physics.acc-ph 2025-07 conditional novelty 5.0 of 10

    An alternating density gradient profile keeps the witness electron bunch in the accelerating phase of a heavy-ion-driven plasma wakefield, reaching about 1.2 GeV over one meter in simulation.

  2. Numerical investigations of heavy ion driven plasma wakefield acceleration

    physics.acc-ph 2025-06 conditional novelty 4.0 of 10

    Heavy-ion beams, especially a 0.1 mm bismuth bunch at HIAF-like parameters, can excite multi-GV/m plasma wakefields and accelerate electrons to hundreds of MeV in meter-scale plasmas, according to LCODE simulations.

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