OSIRIS: A Three-Dimensional, Fully Relativistic Particle in Cell Code for Modeling Plasma Based Accelerators

Fonseca, Ricardo; Silva, L. O.; Tsung, F. S.; Decyk, Viktor K.; Lü, Wei; Ren, C.; Mori, W. B.; Deng, S.; Lee, S.; Katsouleas, T.; Adam, J. C.

doi:10.1007/3-540-47789-6_36

Cited by 643 publications

(494 citation statements)

References 14 publications

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“…This is shown in Fig. 1, which depicts the result of a threedimensional (3D) PIC simulation with OSIRIS [12], indicating that hosing can be far less pronounced than what has been reported so far. Yet unnoticed, this intriguing result suggests that the blowout regime can provide a saturation mechanism for the HI, which strongly damps the beamcentroid oscillations during the propagation, thereby contributing to the stabilization of the beam propagation over long distances.…”

mentioning

confidence: 78%

Mitigation of the Hose Instability in Plasma-Wakefield Accelerators

et al. 2017

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Current models predict the hose instability to crucially limit the applicability of plasma-wakefield accelerators. By developing an analytical model which incorporates the evolution of the hose instability over long propagation distances, this work demonstrates that the inherent drive-beam energy loss, along with an initial beam-energy spread, detunes the betatron oscillations of beam electrons and thereby mitigates the instability. It is also shown that tapered plasma profiles can strongly reduce initial hosing seeds. Hence, we demonstrate that the propagation of a drive beam can be stabilized over long propagation distances, paving the way for the acceleration of high-quality electron beams in plasma-wakefield accelerators. We find excellent agreement between our models and particle-in-cell simulations. DOI: 10.1103/PhysRevLett.118.174801 Plasma-based accelerators can provide accelerating fields in excess of 10 GV=m [1,2]. As a result, these devices can potentially contribute to a future generation of more compact particle accelerators and radiation sources. Plasma-wakefield accelerators (PWFAs) [3,4] employ charged particle beams as drivers of large-amplitude plasma waves. Significant experimental results [2,5] were obtained in the blowout regime, in which a particle beam with a charge density greater than the ambient plasma density expels all plasma electrons within its vicinity, thereby generating a copropagating ion channel with linear electron focusing and extreme accelerating fields [6].Identified by Whittum et al. in the early 1990s [7], the hose instability (HI) remains a long-standing challenge for PWFAs. Hosing is seeded by initial transverse asymmetries of the beam or plasma phase-space distributions. According to current models, the beam-centroid displacement is amplified exponentially during propagation in the plasma [7][8][9][10][11], ultimately leading to a beam breakup. The most recent description for the coupled evolution of the ionchannel centroid X c ðξ; tÞ and the beam centroid X b ðξ; tÞ in the blowout regime is given by [11]with the time t and the comoving coordinate ξ ¼ ct − z, where z is the longitudinal coordinate and c is the speed of light. The plasma wave number is denoted by k p ¼ ω p =c, and the betatron frequency by ω β ¼ ω p = ffiffiffiffiffi 2γ p , with the Lorentz factor γ, where ω p ¼ ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi 4πn 0 e 2 =m p is the plasma frequency with the ambient plasma density n 0 , the elementary charge e, and the electron rest mass m. The coefficients c ψ ðξÞ and c r ðξÞ account for the relativistic motion of electrons in the blowout sheath and for a ξ dependence of the blowout radius and the beam current [11]. According to Eq. (1), a beam-centroid displacement X b leads to a displacement of the ion-channel centroid X c along the beam. The displacement X c couples back to the temporal evolution of X b according to Eq. (2). The case where c ψ ¼ c r ¼ 1 recovers the seminal hosing model [7]. This limit, which accounts for a linear resp...

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confidence: 78%

Mitigation of the Hose Instability in Plasma-Wakefield Accelerators

et al. 2017

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“…Three dimensional particle-in-cell simulations performed using the mas- sively parallel code OSIRIS [28] -utilizing a moving window and an ADK [2] ionization model -demonstrate the essential features of this injector-accelerator concept. The simulations were initialized with the nominal experimental parameters, where the 40 TW laser beam was focused to a Gaussian diffraction limited spot size of 15 microns at the top of a plasma density ramp followed by a uniform 8 mm long (3 mm He/N 2 gas, 5 mm He Only) 3.0x10 18 cm −3 plasma.…”

Section: Two-stage Lwfa Experimentsmentioning

confidence: 97%

“…[1], and through a series of 3D particle in cell (PIC) simulations using the code OSIRIS [28] the condition relating the focused laser spot size to the electron density was found to be [1] …”

Section: The Wake Electric Fieldmentioning

confidence: 99%

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Energy Spread Reduction of Electron Beams Produced via Laser Wake

Pollock

2012

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“…Large full 3D parallel electromagnetic simulation codes like VLPL [3], OSIRIS [4], VORPAL [5], OOPIC [6], and others contributed remarkably in our understanding of the complex laser-plasma physics. Adding new physical processes in the codes, as well as doing large scale high density plasma simulations are becoming more and more computationally expensive.…”

Section: Introductionmentioning

confidence: 99%

One-dimensional electromagnetic relativistic PIC-hydrodynamic hybrid simulation code H-VLPL (hybrid virtual laser plasma lab)

Liljo

Karmakar

Pukhov

et al. 2008

Computer Physics Communications

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In this paper we present a new one dimensional full electromagnetic relativistic hybrid plasma model. The full kinetic particle-in cell (PIC) and hydrodynamic model have been combined in the single hybrid plasma code H-VLPL (hybrid virtual laser plasma laboratory). The semi-implicit algorithm allows to simulate plasmas of arbitrary densities via automatic reduction of the highest plasma frequencies down to the numerically stable range. At the same time, the model keeps the correct spatial scales like the plasma skin depth. We discuss the numerically efficient implementation of this model. Further, we carefully test the hybrid model validity by applying it to a series of physical examples. The new mathematical method allows to overcome the typical time step restrictions of explicit PIC codes.

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OSIRIS: A Three-Dimensional, Fully Relativistic Particle in Cell Code for Modeling Plasma Based Accelerators

Cited by 643 publications

References 14 publications

Mitigation of the Hose Instability in Plasma-Wakefield Accelerators

Mitigation of the Hose Instability in Plasma-Wakefield Accelerators

Energy Spread Reduction of Electron Beams Produced via Laser Wake

One-dimensional electromagnetic relativistic PIC-hydrodynamic hybrid simulation code H-VLPL (hybrid virtual laser plasma lab)

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