Nonlinear plasma waves driven by short ultrarelativistic electron bunches

Wang, Tianhong; Khudik, Vladimir; Breǐzman, B. N.; Shvets, Gennady

doi:10.1063/1.4999629

Cited by 10 publications

(9 citation statements)

References 27 publications

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“…Therefore we conduct the full three-dimensional quasi-static simulations by using the code: WAND-PIC [27]. WAND-PIC uses a quasi-static approach [28,29] to model the motion of bubble-forming plasma particles and laser envelope, thus reduces the major resolution to plasma wavelength scale, and uses full description to model the interaction between driver electrons and high-frequency laser fields. The code is able to capture sophisticated laser-electrons resonance i.e.…”

Section: Three-dimensional Simulation Resultsmentioning

confidence: 99%

Laser-Pulse and Electron-Bunch Plasma Wakefield Accelerator

Wang,

Khudik,

Shvets

2020

Preprint

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We report a novel wakefield acceleration scheme where a laser pulse and an electron driver bunch are overlapped to drive a wakefield in the blowout regime. The laser pulse can provide direct laser acceleration (DLA) to the driver bunch. The driver bunch is then accelerated through the DLA mechanism instead of being decelerated by its wakefield, and its propagation distance is extended by several times. Additionally, the plasma channel sustained by the driver bunch also helps to guide the laser pulse by creating a deeper plasma bubble. The reciprocal relation between the laser pulse and driver bunch would boost the energy gain greatly compare to the laser-only wakefield acceleration or beam-only plasma wakefield acceleration when only ≤ 3% of laser energy is carried by the driver bunch. We demonstrate that a combination of a 380T W laser pulse and a 1nC driver bunch can achieve 4.5 energy gain of the electron at a single stage.

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Section: Three-dimensional Simulation Resultsmentioning

confidence: 99%

Laser-Pulse and Electron-Bunch Plasma Wakefield Accelerator

Wang,

Khudik,

Shvets

2020

Preprint

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“…All quantities except the longitudinal derivatives ∂ ζ J x and ∂ ζ J y are directly accessible after the current deposition. These derivatives can be obtained with a predictor-corrector loop [12,14] or by explicit integration [26,27] HiPACE++ is written considering modern GPU architectures with tens-of-GB global memory, relatively slow transfers between host (CPU) and device (GPU) memories, and fast atomic operations. The algorithm was designed to reduce host-device transfers whenever possible.…”

Section: The Quasi-static Particle-in-cell Algorithmmentioning

confidence: 99%

“…The second option for the B x/y field solver is an explicit field solver using analytic integration, as done in Ref. [26,27]. A 2D non-homogeneous Helmholtz-like equation must be solved (see equation (19) in Ref.…”

Section: B Implementationmentioning

confidence: 99%

HiPACE++: a portable, 3D quasi-static Particle-in-Cell code

Diederichs,

Benedetti,

Huebl

et al. 2021

Preprint

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Modeling plasma accelerators is a computationally challenging task and the quasi-static particlein-cell algorithm is a method of choice in a wide range of situations. In this work, we present the first performance-portable, quasi-static, three-dimensional particle-in-cell code HiPACE++. By decomposing all the computation of a 3D domain in successive 2D transverse operations and choosing appropriate memory management, HiPACE++ demonstrates orders-of-magnitude speedups on modern scientific GPUs over CPU-only implementations. The 2D transverse operations are performed on a single GPU, avoiding time-consuming communications. The longitudinal parallelization is done through temporal domain decomposition, enabling near-optimal strong scaling from 1 to 512 GPUs. HiPACE++ is a modular, open-source code enabling efficient modeling of plasma accelerators from laptops to state-of-the-art supercomputers.

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“…In this section, we design a numerical experiment that clearly the longitudinal laser electric field can significantly change the energy balance of DLA electrons accelerated simultaneously by the laser pulse and the wakefield in the small plasma bubble. The electron dynamics is modeled in realistic 3D geometry using the first-principle self-consistent relativistic 3D PIC code VLPL [31] and quasistatic inhome PIC code (QS-DLA) [32]. The latter can be used as a convenient tool for analyzing the contribution to the electron energy from wake-and laser fields.…”

Section: Pic Simulationsmentioning

confidence: 99%

Direct laser acceleration of electrons in the plasma bubble by tightly focused laser pulses

et al. 2019

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We present an analytical theory that reveals the importance of the longitudinal laser electric field in the resonant acceleration of relativistic electrons by the tightly confined laser beam. It is shown that this field always counterworks to the laser transverse component and effectively decreases the final energy gain of electrons through direct laser acceleration mechanism. This effect is demonstrated by carrying out the particle-in-cell simulations in the setup where the wakefield in the plasma bubble is compensated by the longitudinal laser electric field experienced by the accelerated electrons. The derived scalings and estimates are in good agreement with numerical simulations.

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Nonlinear plasma waves driven by short ultrarelativistic electron bunches

Cited by 10 publications

References 27 publications

Laser-Pulse and Electron-Bunch Plasma Wakefield Accelerator

Laser-Pulse and Electron-Bunch Plasma Wakefield Accelerator

HiPACE++: a portable, 3D quasi-static Particle-in-Cell code

Direct laser acceleration of electrons in the plasma bubble by tightly focused laser pulses

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