dorsal/arxiv
View SchemaGenerating multi-GeV electron bunches using single stage laser wakefield acceleration in a 3D nonlinear regime
| Authors | W. Lu, M. Tzoufras, C. Joshi, F. S. Tsung, W. B. Mori, J. Vieira, R. A. Fonseca, L. O. Silva |
|---|---|
| Categories | |
| ArXiv ID | physics/0612227 |
| URL | https://arxiv.org/abs/physics/0612227 |
| DOI | 10.1103/PhysRevSTAB.10.061301 |
| Journal | Phys.Rev.STAccel.Beams10:061301,2007 |
Abstract
The extraordinary ability of space-charge waves in plasmas to accelerate charged particles at gradients that are orders of magnitude greater than in current accelerators has been well documented. We develop a phenomenological framework for Laser WakeField Acceleration (LWFA) in the 3D nonlinear regime, in which the plasma electrons are expelled by the radiation pressure of a short pulse laser, leading to nearly complete blowout. Our theory provides a recipe for designing a LWFA for given laser and plasma parameters and estimates the number and the energy of the accelerated electrons whether self-injected or externally injected. These formulas apply for self-guided as well as externally guided pulses (e.g. by plasma channels). We demonstrate our results by presenting a sample Particle-In-Cell (PIC) simulation of a 30f sec, 200T W laser interacting with a 0.75cm long plasma with density 1.5*10^18 cm^-3 to produce an ultra-short (10f s) mono-energetic bunch of self-injected electrons at 1.5 GeV with 0.3nC of charge. For future higher-energy accelerator applications we propose a parameter space, that is distinct from that described by Gordienko and Pukhov [Physics of Plasmas 12, 043109 (2005)] in that it involves lower densities and wider spot sizes while keeping the intensity relatively constant. We find that this helps increase the output electron beam energy while keeping the efficiency high.
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"abstract": "The extraordinary ability of space-charge waves in plasmas to accelerate\ncharged particles at gradients that are orders of magnitude greater than in\ncurrent accelerators has been well documented. We develop a phenomenological\nframework for Laser WakeField Acceleration (LWFA) in the 3D nonlinear regime,\nin which the plasma electrons are expelled by the radiation pressure of a short\npulse laser, leading to nearly complete blowout. Our theory provides a recipe\nfor designing a LWFA for given laser and plasma parameters and estimates the\nnumber and the energy of the accelerated electrons whether self-injected or\nexternally injected. These formulas apply for self-guided as well as externally\nguided pulses (e.g. by plasma channels). We demonstrate our results by\npresenting a sample Particle-In-Cell (PIC) simulation of a 30f sec, 200T W\nlaser interacting with a 0.75cm long plasma with density 1.5*10^18 cm^-3 to\nproduce an ultra-short (10f s) mono-energetic bunch of self-injected electrons\nat 1.5 GeV with 0.3nC of charge. For future higher-energy accelerator\napplications we propose a parameter space, that is distinct from that described\nby Gordienko and Pukhov [Physics of Plasmas 12, 043109 (2005)] in that it\ninvolves lower densities and wider spot sizes while keeping the intensity\nrelatively constant. We find that this helps increase the output electron beam\nenergy while keeping the efficiency high.",
"arxiv_id": "physics/0612227",
"authors": [
"W. Lu",
"M. Tzoufras",
"C. Joshi",
"F. S. Tsung",
"W. B. Mori",
"J. Vieira",
"R. A. Fonseca",
"L. O. Silva"
],
"categories": [
"physics.plasm-ph",
"physics.acc-ph"
],
"doi": "10.1103/PhysRevSTAB.10.061301",
"journal_ref": "Phys.Rev.STAccel.Beams10:061301,2007",
"title": "Generating multi-GeV electron bunches using single stage laser wakefield acceleration in a 3D nonlinear regime",
"url": "https://arxiv.org/abs/physics/0612227"
},
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