Skip navigation
Logo
User training | Reference and search service

Library catalog

Retrievo
EDS
b-on
More
resources
Content aggregators
Please use this identifier to cite or link to this item:

acessibilidade

http://hdl.handle.net/10071/8161
acessibilidade
Title: Modeling of laser wakefield acceleration in Lorentz boosted frame using EM-PIC code with spectral solver
Authors: Yu, P.
Xu, X.
Decyk, V. K.
An, W.
Vieira, J.
Tsung, F. S.
Fonseca, R. A.
Lu, W.
Silva, L. O.
Mori, W. B.
Keywords: Particle-in-cell
Plasma simulation
Laser wakefield accelerator
Boosted frame simulation
Spectral solver
Numerical Cerenkov instability
Issue Date: 2014
Publisher: Academic Press/Elsevier
Abstract: Simulating laser wakefield acceleration (LWFA) in a Lorentz boosted frame in which the plasma drifts towards the laser with nu(b) can speed up the simulation by factors of gamma(2)(b) = (1 nu(2)(b)/c(2))(-1). In these simulations the relativistic drifting plasma inevitably induces a high frequency numerical instability that contaminates the interesting physics. Various approaches have been proposed to mitigate this instability. One approach is to solve Maxwell equations in Fourier space (a spectral solver) as this has been shown to suppress the fastest growing modes of this instability in simple test problems using a simple low pass or "ring" or "shell" like filters in Fourier space. We describe the development of a fully parallelized, multi-dimensional, particle-in-cell code that uses a spectral solver to solve Maxwell's equations and that includes the ability to launch a laser using a moving antenna. This new EM-PIC code is called UPIC-EMMA and it is based on the components of the UCLA PIC framework (UPIC). We show that by using UPIC-EMMA, LWFA simulations in the boosted frames with arbitrary yb can be conducted without the presence of the numerical instability. We also compare the results of a few LWFA cases for several values of yb, including lab frame simulations using OSIRIS, an EM-PIC code with a finite-difference time domain (FDTD) Maxwell solver. These comparisons include cases in both linear and nonlinear regimes. We also investigate some issues associated with numerical dispersion in lab and boosted frame simulations and between FDTD and spectral solvers.
Description: WOS:000333403900007 (Nº de Acesso Web of Science)
Peer reviewed: Sim
URI: https://ciencia.iscte-iul.pt/public/pub/id/17805
http://hdl.handle.net/10071/8161
ISSN: 0021-9991
Publisher version: The definitive version is available at: http://dx.doi.org/10.1016/j.jcp.2014.02.016
Appears in Collections:CTI-RI - Artigos em revistas científicas internacionais com arbitragem científica

Files in This Item:
acessibilidade
File Description SizeFormat 
pre_print_JCP1310_2622_2.pdf861.89 kBAdobe PDFView/Open


FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote Currículo DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.