High-quality electron beams from a laser wakefield accelerator using plasma-channel guiding

Geddes, C. G. R.; Tóth, Cs.; Tilborg, van J Jeroen; Esarey, E.; Schroeder, C. B.; Bruhwiler, David L.; Nieter, C.; Cary, John R.; Leemans, W.P.

doi:10.1038/nature02900

Cited by 1,918 publications

(1,229 citation statements)

References 48 publications

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“…Laser-plasma acceleration has gained rapidly increasing interest since several years ago, when high-quality electron beams were produced by self-trapping and accelerated to $100 MeV in a few millimeters [13][14][15]. Since then, efforts have focused on obtaining beams useful for highenergy particle colliders [9] and radiation sources [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Generalized algorithm for control of numerical dispersion in explicit time-domain electromagnetic simulations

Cowan

Bruhwiler

Cary

et al. 2013

Phys. Rev. ST Accel. Beams

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We describe a modification to the finite-difference time-domain algorithm for electromagnetics on a Cartesian grid which eliminates numerical dispersion error in vacuum for waves propagating along a grid axis. We provide details of the algorithm, which generalizes previous work by allowing 3D operation with a wide choice of aspect ratio, and give conditions to eliminate dispersive errors along one or more of the coordinate axes. We discuss the algorithm in the context of laser-plasma acceleration simulation, showing significant reduction-up to a factor of 280, at a plasma density of 10 23 m À3 -of the dispersion error of a linear laser pulse in a plasma channel. We then compare the new algorithm with the standard electromagnetic update for laser-plasma accelerator stage simulations, demonstrating that by controlling numerical dispersion, the new algorithm allows more accurate simulation than is otherwise obtained. We also show that the algorithm can be used to overcome the critical but difficult challenge of consistent initialization of a relativistic particle beam and its fields in an accelerator simulation.

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Section: Introductionmentioning

confidence: 99%

Generalized algorithm for control of numerical dispersion in explicit time-domain electromagnetic simulations

Cowan

Bruhwiler

Cary

et al. 2013

Phys. Rev. ST Accel. Beams

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“…results have reinforced this idea [10,11]. The plasma waves generated during the laser-plasma interaction can also be used to accelerate photons [12,13]; here the frequency of the radiation is continuously upshifted, in analogy with the energy gain of the trailing electrons in the original concept of plasma accelerators.…”

mentioning

confidence: 60%

Equivalent charge of photons in a very dense quantum plasma

Rios¹,

Shukła

2008

J. Plasma Phys.

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Abstract. The equivalent charge of photons in dense unmagnetized and magnetized Fermi plasmas is determined through the plasma physics method. This charge is associated with the polarization of the medium caused by the ponderomotive force of the electromagnetic waves. Relations for the coupling between the electron plasma density perturbation and the radiation fields are derived for unmagnetized and magnetized plasmas, taking into account the quantum force associated with the quantum Bohm potential in dense Fermi plasmas. The effective photon charge is then determined. The effects of the ion motion are also included in the investigation.Astronomical [1-3] and experimental [4] methods allow one to set limits on the hypothetical electric charge of photons. The existence of a small photon charge would result in charge asymmetry of the Universe and would contribute to the observed cosmic microwave background (CMB) anisotropy [5], for example. However, it is possible to define an equivalent electric charge for an intense laser pulse propagating in a plasma [6,7]. The laser pulse can be thought as a packet of photons, each moving with the group velocity of the laser and possessing an effective mass m eff = ω pe /c 2 , where is the Planck constant divided by 2π, ω pe is the electron plasma frequency, and c is the speed of light in vacuum. This is possible due to the fact that electromagnetic radiation with a large spectral width can be described as a gas of photons; in this case, phase effects are negligible and the photons moving through the plasma can be considered as point-like particles. The photon electric charge is associated with the ponderomotive force (radiation pressure) of the photons, which pushes the electrons out of the region occupied by the pulse and causes the polarization of the medium. In a homogeneous plasma, this equivalent charge induces a time-dependent electric field which moves with the photon group velocity and can eventually be measured. There is also evidence that intense magnetic fields are produced during the laser-plasma interactions [8], which can affect the propagation of photons and the transport of energy in plasmas.During the last few decades, there has been a great deal of interest in investigating the nonlinear interactions between powerful lasers and plasmas in the hope of producing a particle accelerator at the highest energies [9]. Recent experimental at https://www.cambridge.org/core/terms. https://doi

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“…Meanwhile, in a linear collider such as an International Linear Collider(ILC) one can reach to higher energies about E = 1 TeV or even more. Furthermore, in laser-plasma accelerators, electron can be accelerated to energies from hundreds of MeV [57][58][59] to multi-GeV energies [60,61].…”

Section: Charged Lepton Beamsmentioning

confidence: 99%

Using an intense laser beam in interaction with muon/electron beam to probe the noncommutative QED

Tizchang¹,

Batebi²,

Haghighat³

et al. 2017

J. High Energ. Phys.

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It is known that the linearly polarized photons can partly transform to circularly polarized ones via forward Compton scattering in a background such as the external magnetic field or noncommutative space time. Based on this fact we explore the effects of the NC-background on the scattering of a linearly polarized laser beam from an intense beam of charged leptons. We show that for a muon/electron beam flux ε µ,e ∼ 10 12 /10 10 TeV cm −2 sec −1 and a linearly polarized laser beam with energy k 0 ∼1 eV and average powerP laser 10 3 KW, the generation rate of circularly polarized photons is about R V ∼ 10 4 /sec for noncommutative energy scale Λ NC ∼ 10 TeV. This is fairly large and can grow for more intense beams in near future.

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High-quality electron beams from a laser wakefield accelerator using plasma-channel guiding

Cited by 1,918 publications

References 48 publications

Generalized algorithm for control of numerical dispersion in explicit time-domain electromagnetic simulations

Generalized algorithm for control of numerical dispersion in explicit time-domain electromagnetic simulations

Equivalent charge of photons in a very dense quantum plasma

Using an intense laser beam in interaction with muon/electron beam to probe the noncommutative QED

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