KAD12D-A particle-in-cell code based on finite-volume methods

C. D. Munz, P. Omnes, R. Schneider, E. Sonnendrucker, E. Stein, U. Voss, T. Westermann

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Pulsed-power diodes have been developed at the Forschungszentrum Karlsruhe and are the objects of extensive experimental as well as numerical investigations. The electrical behavior of the diodes is substantially influenced by a charged particle flow forming a non-neutral plasma inside these devices. A detailed understanding of the fundamental time-dependent phenomena (e.g., the origin of instabilities) caused by this plasma requires the solution of the Maxwell-Lorentz equations for realistic configurations with a very accurate replica of the border of the domain, where several kinds of boundary conditions are imposed. An attractive method to attack this non-linear equations numerically is the particle-in-cell (PIC) technique. As a preliminary to use the PIC approach, the relevant diode domain has to be covered by an appropriate computational mesh. Therefore, we adopt a grid model based on boundary-fitted coordinates resulting in a quadrilateral mesh zone arrangement with regular data structure. The numerical solution of the Maxwell equations in time domain is obtained by using a finite-volume (FV) approach on a non-rectangular quadrilateral mesh in two space dimensions. A very favorable property of these modern FV schemes consists in the fact that they combine inherent robustness at steep gradients with accurate resolution. In the context of self-consistent charged particle simulation in electromagnetic fields the coupling of a high-resolution FV Maxwell solver with the PIC method is a new way of approximation.

Original languageEnglish
Title of host publicationBEAMS 1998 - Proceedings of the 12th International Conference on High-Power Particle Beams
EditorsMeir Markovitis, Joseph Shiloh
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages541-544
Number of pages4
ISBN (Electronic)0780342879, 9780780342873
DOIs
StatePublished - 1998
Externally publishedYes
Event12th International Conference on High-Power Particle Beams, BEAMS 1998 - Haifa, Israel
Duration: 12 Jun 1998 → …

Publication series

NameBEAMS 1998 - Proceedings of the 12th International Conference on High-Power Particle Beams
Volume1

Conference

Conference12th International Conference on High-Power Particle Beams, BEAMS 1998
Country/TerritoryIsrael
CityHaifa
Period12/06/98 → …

Keywords

  • Boundary conditions
  • Context modeling
  • Data structures
  • Diodes
  • Electromagnetic fields
  • Finite volume methods
  • Maxwell equations
  • Nonlinear equations
  • Plasma devices
  • Robustness

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