Self-modulation instability of a long proton bunch in plasmas.

  title={Self-modulation instability of a long proton bunch in plasmas.},
  author={Naveen Kumar and A. Pukhov and K. V. Lotov},
  journal={Physical review letters},
  volume={104 25},
An analytical model for the self-modulation instability of a long relativistic proton bunch propagating in uniform plasmas is developed. The self-modulated proton bunch resonantly excites a large amplitude plasma wave (wakefield), which can be used for acceleration of plasma electrons. Analytical expressions for the linear growth rates and the number of exponentiations are given. We use full three-dimensional particle-in-cell (PIC) simulations to study the beam self-modulation and transition to… 

Figures from this paper

Controlled Growth of the Self-Modulation of a Relativistic Proton Bunch in Plasma.
A long, narrow, relativistic charged particle bunch propagating in plasma is subject to the self-modulation (SM) instability. We show that SM of a proton bunch can be seeded by the wakefields driven
Experimental Observation of Proton Bunch Modulation in a Plasma at Varying Plasma Densities.
Direct experimental evidence is given for the observation of the full transverse self-modulation of a long, relativistic proton bunch propagating through a dense plasma and the modulation frequency scales with the expected dependence on the plasma density.
Observation of the Self-Modulation Instability via Time-Resolved Measurements.
Demonstrating the modulation of a long electron bunch into three bunches with an approximately 200  keV/c amplitude momentum modulation is a breakthrough for proton-driven plasma accelerator schemes aiming to utilize the same physical effect.
Controlled self-modulation of high energy beams in a plasma
A high energy particle beam propagating in a uniform plasma is subject to the transverse two-stream instability that first transforms the beam into the train of microbunches and then quickly destroys
Transverse self-modulation of ultra-relativistic lepton beams in the plasma wakefield accelerator
The transverse self-modulation of ultra-relativistic, long lepton bunches in high-density plasmas is explored through full-scale particle-in-cell simulations. We demonstrate that long SLAC-type
Hosing Instability Suppression in Self-Modulated Plasma Wakefields
We show that the hosing instability can be suppressed after the saturation of the self-modulation instability of a long particle bunch if the plasma density perturbation is linear. We derive scalings
Seeding of the self-modulation in a long proton bunch by charge cancellation with a short electron bunch
  • M. HutherP. Muggli
  • Physics
    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
  • 2018
Ion motion in the wake driven by long particle bunches in plasmasa)
We explore the role of the background plasma ion motion in self-modulated plasma wakefield accelerators. We employ Dawson's plasma sheet model to derive expressions for the transverse plasma electric
Particle beam self-modulation instability in tapered and inhomogeneous plasma
The particle beam self-modulation instability in tapered and inhomogeneous plasmas is analyzed via an evolution equation for the beam radius. For a sufficiently fast taper, the instability is
Plasma density measurement by means of self-modulation of long electron bunches
We present a new method to determine the electron density of a plasma by measuring the periodicity of modulations introduced to the longitudinal phase space of a relativistic particle bunch by the


GeV electron beams from a centimetre-scale accelerator
Gigaelectron volt (GeV) electron accelerators are essential to synchrotron radiation facilities and free-electron lasers, and as modules for high-energy particle physics. Radiofrequency-based
m LIK arreci of aiuminum powder i n d:unping solid propellant instability had been investigated in a vortex burner developed previously. was composed of a main chamber having a shallow
  • Livy
  • Tao te Ching
  • 1961
Plasma Sci
  • 24,, 252
  • 1996
  • Fluids 30, 252
  • 1987
  • Fluids B 5, 4432
  • 1993
Basic Plasma Physics I (North-Holland Publishing Company, 1983), vol. 1 of Handbook of Plasma Physics, chap
  • 1983
  • Rev. Lett. 101, 054801
  • 2008
  • Rev. Lett. 72, 2887
  • 1994
Nat Phys 5
  • 363
  • 2009