Accurate modeling of plasma acceleration with arbitrary order pseudospectral particleincell methods
Particle in Cell (PIC) simulations are a widely used tool for the investigation of both laser and beamdriven plasma acceleration. It is a known issue that the beam quality can be artificially degraded by numerical Cherenkov radiation (NCR) resulting primarily from an incorrectly modeled dispersion relation. Pseudospectral solvers featuring infinite order stencils can strongly reduce NCR  or even suppress it  and are therefore well suited to correctly model the beam properties. For efficient parallelization of the PIC algorithm, however, localized solvers are inevitable. Arbitrary order pseudospectral methods provide this needed locality. Yet, these methods can again be prone to NCR. Here in this paper, we show that acceptably low solver orders are sufficient to correctly model the physics of interest, while allowing for parallel computation by domain decomposition.
 Authors:

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 Univ. of Hamburg (Germany). Center for FreeElectron Laser Science & Dept. of Physics
 Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
 Publication Date:
 Grant/Contract Number:
 AC0205CH11231
 Type:
 Accepted Manuscript
 Journal Name:
 Physics of Plasmas
 Additional Journal Information:
 Journal Volume: 24; Journal Issue: 3; Journal ID: ISSN 1070664X
 Publisher:
 American Institute of Physics (AIP)
 Research Org:
 Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
 Sponsoring Org:
 USDOE Office of Science (SC), High Energy Physics (HEP) (SC25)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Finite difference time domain calculations; Particleincell method; Dispersion relations; Fourier transforms; Maxwell equations
 OSTI Identifier:
 1393128
 Alternate Identifier(s):
 OSTI ID: 1349384
Jalas, S., Dornmair, I., Lehe, R., Vincenti, H., Vay, J. L., Kirchen, M., and Maier, A. R.. Accurate modeling of plasma acceleration with arbitrary order pseudospectral particleincell methods. United States: N. p.,
Web. doi:10.1063/1.4978569.
Jalas, S., Dornmair, I., Lehe, R., Vincenti, H., Vay, J. L., Kirchen, M., & Maier, A. R.. Accurate modeling of plasma acceleration with arbitrary order pseudospectral particleincell methods. United States. doi:10.1063/1.4978569.
Jalas, S., Dornmair, I., Lehe, R., Vincenti, H., Vay, J. L., Kirchen, M., and Maier, A. R.. 2017.
"Accurate modeling of plasma acceleration with arbitrary order pseudospectral particleincell methods". United States.
doi:10.1063/1.4978569. https://www.osti.gov/servlets/purl/1393128.
@article{osti_1393128,
title = {Accurate modeling of plasma acceleration with arbitrary order pseudospectral particleincell methods},
author = {Jalas, S. and Dornmair, I. and Lehe, R. and Vincenti, H. and Vay, J. L. and Kirchen, M. and Maier, A. R.},
abstractNote = {Particle in Cell (PIC) simulations are a widely used tool for the investigation of both laser and beamdriven plasma acceleration. It is a known issue that the beam quality can be artificially degraded by numerical Cherenkov radiation (NCR) resulting primarily from an incorrectly modeled dispersion relation. Pseudospectral solvers featuring infinite order stencils can strongly reduce NCR  or even suppress it  and are therefore well suited to correctly model the beam properties. For efficient parallelization of the PIC algorithm, however, localized solvers are inevitable. Arbitrary order pseudospectral methods provide this needed locality. Yet, these methods can again be prone to NCR. Here in this paper, we show that acceptably low solver orders are sufficient to correctly model the physics of interest, while allowing for parallel computation by domain decomposition.},
doi = {10.1063/1.4978569},
journal = {Physics of Plasmas},
number = 3,
volume = 24,
place = {United States},
year = {2017},
month = {3}
}