Numerical Studies of Electron Acceleration Behind Self-Modulating Proton Beam in Plasma with a Density Gradient
arXiv:1511.04360 · doi:10.1016/j.nima.2016.01.063
Abstract
Presently available high-energy proton beams in circular accelerators carry enough momentum to accelerate high-intensity electron and positron beams to the TeV energy scale over several hundred meters of the plasma with a density of about 1e15 1/cm^3. However, the plasma wavelength at this density is 100-1000 times shorter than the typical longitudinal size of the high-energy proton beam. Therefore the self-modulation instability (SMI) of a long (~10 cm) proton beam in the plasma should be used to create the train of micro-bunches which would then drive the plasma wake resonantly. Changing the plasma density profile offers a simple way to control the development of the SMI and the acceleration of particles during this process. We present simulations of the possible use of a plasma density gradient as a way to control the acceleration of the electron beam during the development of the SMI of a 400 GeV proton beam in a 10 m long plasma. This work is done in the context of the AWAKE project --- the proof-of-principle experiment on proton driven plasma wakefield acceleration at CERN.
4 pages, 5 figures,
References in corpus (4)
Cited by in corpus (7)
- Acceleration of electrons in the plasma wakefield of a proton bunch
- AWAKE, The Advanced Proton Driven Plasma Wakefield Acceleration Experiment at CERN
- Path to AWAKE: Evolution of the concept
- Interferometer-based high-accuracy white light measurement of neutral rubidium density and gradient at AWAKE
- Highly efficient electromagnetic emission during 100 keV electron beam relaxation in a thin magnetized plasma
- Proton Driven Plasma Wakefield Acceleration in AWAKE
- First fully kinetic three-dimensional simulation of the AWAKE baseline scenario