Comparisons of Time Explicit Hybrid Kinetic-Fluid Code Architect for Plasma Wakefield Acceleration with a full PIC code

Massimo, F.; Marocchino, A.; Atzeni, S.

doi:10.1016/j.jcp.2016.09.067

Journal Article

PUBDB-2016-04600

Comparisons of Time Explicit Hybrid Kinetic-Fluid Code Architect for Plasma Wakefield Acceleration with a full PIC code

Massimo, F. (Corresponding author) ; Atzeni, S.Extern* ; Marocchino, A.Extern*

2016
Elsevier Amsterdam

Journal of computational physics 327, 841 - 850 (2016) [10.1016/j.jcp.2016.09.067]

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Please use a persistent id in citations: doi:10.1016/j.jcp.2016.09.067 doi:10.3204/PUBDB-2016-04600

Abstract: Architect, a time explicit hybrid code designed to perform quick simulations for electron driven plasma wakefield acceleration, is described. In order to obtain beam quality acceptable for applications, control of the beam-plasma-dynamics is necessary. Particle in Cell (PIC) codes represent the state-of-the-art technique to investigate the underlying physics and possible experimental scenarios; however PIC codes demand the necessity of heavy computational resources. Architect code substantially reduces the need for computational resources by using a hybrid approach: relativistic electron bunches are treated kinetically as in a PIC code and the background plasma as a fluid. Cylindrical symmetry is assumed for the solution of the electromagnetic fields and fluid equations. In this paper both the underlying algorithms as well as a comparison with a fully three dimensional particle in cell code are reported. The comparison highlights the good agreement between the two models up to the weakly non-linear regimes. In highly non-linear regimes the two models only disagree in a localized region, where the plasma electrons expelled by the bunch close up at the end of the first plasma oscillation.

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