Low-Emittance Electron Bunches from a Laser-Plasma Accelerator Measured using Single-Shot X-Ray Spectroscopy

Plateau, G. R.; Geddes, C. G. R.; Thorn, D. B.; Chen, Min; Benedetti, C.; Esarey, E.; Gonsalves, A. J.; Matlis, Nicholas H.; Nakamura, Kei; Schroeder, C. B.; Shiraishi, S.; Sokollik, Thomas; Tilborg, J. van; Tóth, Csaba; Trotsenko, S.; Kim, T. S.; Battaglia, Marina; Stöhlker, Th.; Leemans, Wim

doi:10.1103/physrevlett.109.064802

Cited by 164 publications

(129 citation statements)

References 35 publications

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“…The code has also been used as a diagnostic method to detect the beam transverse size inside the wakefield [29]. By using some experimental results such as final electron charge, energy spread, and betatron radiation spectrum, we set different beam sizes in the code and get the radiation on a faraway x-ray CCD camera.…”

Section: A Betatron Radiation From a Lpamentioning

confidence: 99%

“…Dependent on the beam energy, both Thomson or Compton scattering processes can occur. Besides working as a radiation source, the radiation can also be used as a diagnostic for the beam itself [29][30][31]. Because of the unique character of the electron beam in LPA, the beam size and internal structure inside the plasma are important and cannot be directly detected by normal diagnosis techniques.…”

Section: Introductionmentioning

confidence: 99%

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Modeling classical and quantum radiation from laser-plasma accelerators

Chen

Esarey

Geddes

et al. 2013

Phys. Rev. ST Accel. Beams

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The development of models and the ''Virtual Detector for Synchrotron Radiation'' (VDSR) code that accurately describe the production of synchrotron radiation are described. These models and code are valid in the classical and linear (single-scattering) quantum regimes and are capable of describing radiation produced from laser-plasma accelerators (LPAs) through a variety of mechanisms including betatron radiation, undulator radiation, and Thomson/Compton scattering. Previous models of classical synchrotron radiation, such as those typically used for undulator radiation, are inadequate in describing the radiation spectra from electrons undergoing small numbers of oscillations. This is due to an improper treatment of a mathematical evaluation at the end points of an integration that leads to an unphysical plateau in the radiation spectrum at high frequencies, the magnitude of which increases as the number of oscillation periods decreases. This is important for betatron radiation from LPAs, in which the betatron strength parameter is large but the number of betatron periods is small. The code VDSR allows the radiation to be calculated in this regime by full integration over each electron trajectory, including end-point effects, and this code is used to calculate betatron radiation for cases of experimental interest. Radiation from Thomson scattering and Compton scattering is also studied with VDSR. For Thomson scattering, radiation reaction is included by using the Sokolov method for the calculation of the electron dynamics. For Compton scattering, quantum recoil effects are considered in VDSR by using Monte Carlo methods. The quantum calculation has been benchmarked with the classical calculation in a classical regime.

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Section: A Betatron Radiation From a Lpamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modeling classical and quantum radiation from laser-plasma accelerators

Chen

Esarey

Geddes

et al. 2013

Phys. Rev. ST Accel. Beams

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“…The accelerated electrons in a LWFA have been measured to have very small normalized emittance of ~ 0.1mm-mrad while still being trapped. This was done by studying the energy spectrum of the x-rays generated by the electrons' betatron oscillations inside the plasma wave [14]. However, it was also measured that the charge per bunch was only ~0.4 pC and the energy spread was also relatively large at ~2.8%.…”

Section: -3mentioning

confidence: 99%

“…It should be noted in ref. [14], a CO 2 laser ( = 10.6 m) with a wavelength more than 10 times that of the conventional Ti:Sapphire laser ( = 0.8 m) is used to drive the LWFA. It may not be surprising that the CO 2 laser has an apparent edge over a shorter wavelength laser in this respect.…”

Section: -3mentioning

confidence: 99%

Prospects of coherent Compton backscattered X-rays from self-generated wiggler in a laser wakefield accelerator

Ting¹,

Kaganovich²,

Hafizi³

et al. 2016

AIP Conference Proceedings

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“…the well-known laser-Compton scattering light sources [6,11,[16][17][18][19]. On the other hand, the laser-plasma accelerators (LPAs) have made a great breakthrough in the generation of electron beam with peak current above 10 kA, low emittance less than 0.1 µm and beam energy of 1 GeV [20][21][22][23][24][25]. Taking the great advantages of the laser undulator and the LPA, novel tabletop all-optical Compton gamma-ray source has already been experimentally demonstrated [18].…”

mentioning

confidence: 99%

Compensating the electron beam energy spread by the natural transverse gradient of laser undulator in all-optical x-ray light sources

Zhang¹,

Feng²,

Deng³

et al. 2014

Opt. Express

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All-optical ideas provide a potential to dramatically cut off the size and cost of x-ray light sources to the university-laboratory scale, with the combination of the laser-plasma accelerator and the laser undulator. However, the large longitudinal energy spread of the electron beam from laser-plasma accelerator may hinder the way to high brightness of these all-optical light sources. In this paper, the beam energy spread effect is proposed to be significantly compensated by the natural transverse gradient of a laser undulator when properly transverse-dispersing the electron beam. Theoretical analysis and numerical simulations on conventional laserCompton scattering sources and high-gain all-optical x-ray free-electron lasers with the electron beams from laser-plasma accelerators are presented.

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Low-Emittance Electron Bunches from a Laser-Plasma Accelerator Measured using Single-Shot X-Ray Spectroscopy

Cited by 164 publications

References 35 publications

Modeling classical and quantum radiation from laser-plasma accelerators

Modeling classical and quantum radiation from laser-plasma accelerators

Prospects of coherent Compton backscattered X-rays from self-generated wiggler in a laser wakefield accelerator

Compensating the electron beam energy spread by the natural transverse gradient of laser undulator in all-optical x-ray light sources

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