Direct observation of plasma waves and dynamics induced by laser-accelerated electron beams

M. F. Gilljohann, H. Ding, A. Döpp, J. Götzfried, S. Schindler, G. Schilling, S. Corde, A. Debus, T. Heinemann, B. Hidding, S. M. Hooker, A. Irman, O. Kononenko, T. Kurz, A. Martinez De La Ossa, U. Schramm, S. Karsch

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Plasma wakefield acceleration (PWFA) is a novel acceleration technique with promising prospects for both particle colliders and light sources. However, PWFA research has so far been limited to a few large-scale accelerator facilities worldwide. Here, we present first results on plasma wakefield generation using electron beams accelerated with a 100-TW-class Ti:sapphire laser. Because of their ultrashort duration and high charge density, the laser-accelerated electron bunches are suitable to drive plasma waves at electron densities in the order of 1019 cm-3. We capture the beam-induced plasma dynamics with femtosecond resolution using few-cycle optical probing and, in addition to the plasma wave itself, we observe a distinctive transverse ion motion in its trail. This previously unobserved phenomenon can be explained by the ponderomotive force of the plasma wave acting on the ions, resulting in a modulation of the plasma density over many picoseconds. Because of the scaling laws of plasma wakefield generation, results obtained at high plasma density using high-current laser-accelerated electron beams can be readily scaled to low-density systems. Laser-driven PWFA experiments can thus act as miniature models for their larger, conventional counterparts. Furthermore, our results pave the way towards a novel generation of laser-driven PWFA, which can potentially provide ultralow emittance beams within a compact setup.

LanguageEnglish
Article number011046
Number of pages13
JournalPhysical Review X
Volume9
Issue number1
DOIs
Publication statusPublished - 12 Mar 2019

Fingerprint

plasma dynamics
plasma acceleration
plasma waves
electron beams
plasma generators
lasers
plasma density
ion motion
ponderomotive forces
emittance
scaling laws
high current
light sources
sapphire
accelerators
modulation
cycles
ions
electrons

Keywords

  • photonics
  • plasma physics
  • plasma wakefield acceleration

Cite this

Gilljohann, M. F., Ding, H., Döpp, A., Götzfried, J., Schindler, S., Schilling, G., ... Karsch, S. (2019). Direct observation of plasma waves and dynamics induced by laser-accelerated electron beams. Physical Review X, 9(1), [011046]. https://doi.org/10.1103/PhysRevX.9.011046
Gilljohann, M. F. ; Ding, H. ; Döpp, A. ; Götzfried, J. ; Schindler, S. ; Schilling, G. ; Corde, S. ; Debus, A. ; Heinemann, T. ; Hidding, B. ; Hooker, S. M. ; Irman, A. ; Kononenko, O. ; Kurz, T. ; Martinez De La Ossa, A. ; Schramm, U. ; Karsch, S. / Direct observation of plasma waves and dynamics induced by laser-accelerated electron beams. In: Physical Review X. 2019 ; Vol. 9, No. 1.
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abstract = "Plasma wakefield acceleration (PWFA) is a novel acceleration technique with promising prospects for both particle colliders and light sources. However, PWFA research has so far been limited to a few large-scale accelerator facilities worldwide. Here, we present first results on plasma wakefield generation using electron beams accelerated with a 100-TW-class Ti:sapphire laser. Because of their ultrashort duration and high charge density, the laser-accelerated electron bunches are suitable to drive plasma waves at electron densities in the order of 1019 cm-3. We capture the beam-induced plasma dynamics with femtosecond resolution using few-cycle optical probing and, in addition to the plasma wave itself, we observe a distinctive transverse ion motion in its trail. This previously unobserved phenomenon can be explained by the ponderomotive force of the plasma wave acting on the ions, resulting in a modulation of the plasma density over many picoseconds. Because of the scaling laws of plasma wakefield generation, results obtained at high plasma density using high-current laser-accelerated electron beams can be readily scaled to low-density systems. Laser-driven PWFA experiments can thus act as miniature models for their larger, conventional counterparts. Furthermore, our results pave the way towards a novel generation of laser-driven PWFA, which can potentially provide ultralow emittance beams within a compact setup.",
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Gilljohann, MF, Ding, H, Döpp, A, Götzfried, J, Schindler, S, Schilling, G, Corde, S, Debus, A, Heinemann, T, Hidding, B, Hooker, SM, Irman, A, Kononenko, O, Kurz, T, Martinez De La Ossa, A, Schramm, U & Karsch, S 2019, 'Direct observation of plasma waves and dynamics induced by laser-accelerated electron beams' Physical Review X, vol. 9, no. 1, 011046. https://doi.org/10.1103/PhysRevX.9.011046

Direct observation of plasma waves and dynamics induced by laser-accelerated electron beams. / Gilljohann, M. F.; Ding, H.; Döpp, A.; Götzfried, J.; Schindler, S.; Schilling, G.; Corde, S.; Debus, A.; Heinemann, T.; Hidding, B.; Hooker, S. M.; Irman, A.; Kononenko, O.; Kurz, T.; Martinez De La Ossa, A.; Schramm, U.; Karsch, S.

In: Physical Review X, Vol. 9, No. 1, 011046, 12.03.2019.

Research output: Contribution to journalArticle

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T1 - Direct observation of plasma waves and dynamics induced by laser-accelerated electron beams

AU - Gilljohann, M. F.

AU - Ding, H.

AU - Döpp, A.

AU - Götzfried, J.

AU - Schindler, S.

AU - Schilling, G.

AU - Corde, S.

AU - Debus, A.

AU - Heinemann, T.

AU - Hidding, B.

AU - Hooker, S. M.

AU - Irman, A.

AU - Kononenko, O.

AU - Kurz, T.

AU - Martinez De La Ossa, A.

AU - Schramm, U.

AU - Karsch, S.

PY - 2019/3/12

Y1 - 2019/3/12

N2 - Plasma wakefield acceleration (PWFA) is a novel acceleration technique with promising prospects for both particle colliders and light sources. However, PWFA research has so far been limited to a few large-scale accelerator facilities worldwide. Here, we present first results on plasma wakefield generation using electron beams accelerated with a 100-TW-class Ti:sapphire laser. Because of their ultrashort duration and high charge density, the laser-accelerated electron bunches are suitable to drive plasma waves at electron densities in the order of 1019 cm-3. We capture the beam-induced plasma dynamics with femtosecond resolution using few-cycle optical probing and, in addition to the plasma wave itself, we observe a distinctive transverse ion motion in its trail. This previously unobserved phenomenon can be explained by the ponderomotive force of the plasma wave acting on the ions, resulting in a modulation of the plasma density over many picoseconds. Because of the scaling laws of plasma wakefield generation, results obtained at high plasma density using high-current laser-accelerated electron beams can be readily scaled to low-density systems. Laser-driven PWFA experiments can thus act as miniature models for their larger, conventional counterparts. Furthermore, our results pave the way towards a novel generation of laser-driven PWFA, which can potentially provide ultralow emittance beams within a compact setup.

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KW - photonics

KW - plasma physics

KW - plasma wakefield acceleration

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Gilljohann MF, Ding H, Döpp A, Götzfried J, Schindler S, Schilling G et al. Direct observation of plasma waves and dynamics induced by laser-accelerated electron beams. Physical Review X. 2019 Mar 12;9(1). 011046. https://doi.org/10.1103/PhysRevX.9.011046