Electron trapping and acceleration by the plasma wakefield of a self-modulating proton beam
arXiv:1408.4448 · doi:10.1063/1.4904365
Abstract
It is shown that co-linear injection of electrons or positrons into the wakefield of the self-modulating particle beam is possible and ensures high energy gain. The witness beam must co-propagate with the tail part of the driver, since the plasma wave phase velocity there can exceed the light velocity, which is necessary for efficient acceleration. If the witness beam is many wakefield periods long, then the trapped charge is limited by beam loading effects. The initial trapping is better for positrons, but at the acceleration stage a considerable fraction of positrons is lost from the wave. For efficient trapping of electrons, the plasma boundary must be sharp, with the density transition region shorter than several centimeters. Positrons are not susceptible to the initial plasma density gradient.
arXiv comment9 pages, 9 figures, 1 table, 44 references
References in corpus (11)
- Proton Driven Plasma Wakefield Acceleration
- Self-modulation instability of a long proton bunch in plasmas
- Growth and phase velocity of self-modulated beam-driven plasma waves
- Phase velocity and particle injection in a self-modulated proton-driven plasma wakefield accelerator
- Plasma Wakefield Acceleration with a Modulated Proton Bunch
- Transverse self-modulation of ultra-relativistic lepton beams in the plasma wakefield accelerator
- Hosing Instability Suppression in Self-Modulated Plasma Wakefields
- Effect of plasma inhomogeneity on plasma wakefield acceleration driven by long bunches
- Excitation of two-dimensional plasma wakefields by trains of equidistant particle bunches
- Ion motion in the wake driven by long particle bunches in plasmas
- Optimum angle for side injection of electrons into linear plasma wakefields
Cited by in corpus (14)
- Experimental observation of plasma wakefield growth driven by the seeded self-modulation of a proton bunch
- Path to AWAKE: Evolution of the concept
- AWAKE readiness for the study of the seeded self-modulation of a 400\,GeV proton bunch
- Physics of beam self-modulation in plasma wakefield accelerators
- LCODE: a parallel quasistatic code for computationally heavy problems of plasma wakefield acceleration
- Numerical Studies of Electron Acceleration Behind Self-Modulating Proton Beam in Plasma with a Density Gradient
- Effect of beam emittance on self-modulation of long beams in plasma wakefield accelerators
- Indirect Self-Modulation Instability Measurement Concept for the AWAKE Proton Beam
- Response of narrow cylindrical plasmas to dense charged particle beams
- First fully kinetic three-dimensional simulation of the AWAKE baseline scenario
- Witness emittance growth caused by driver density fluctuations in plasma wakefield accelerators
- AWAKE-related benchmarking tests for simulation codes
- Experimental study of extended timescale dynamics of a plasma wakefield driven by a self-modulated proton bunch
- Quasi-stable injection channels in a wakefield accelerator