Author: Bahls, C.R.
Paper Title Page
MOADC3 An Application of the Non-conforming Crouzeix-Raviart Finite Element Method to Space Charge Calculations 51
 
  • C.R. Bahls, U. van Rienen
    Rostock University, Faculty of Computer Science and Electrical Engineering, Rostock, Germany
 
  The calculation of space charge effects in linear accellerators is an important prerequisite to understand the interaction between charged particles and the surrounding environment. These calculations should be as efficient as possible. In this work we explore the suitability of the Crouzeix-Raviart Finite Element Method for the computation of the self-field of an electron bunch.  
slides icon Slides MOADC3 [1.028 MB]  
 
FRAAC2 Arbitrary High-Order Discontinuous Galerkin Method for Electromagnetic Field Problems 275
 
  • K. Papke, C.R. Bahls, U. van Rienen
    Rostock University, Faculty of Computer Science and Electrical Engineering, Rostock, Germany
 
  Funding: Work supported by Federal Ministry for Research and Education BMBF under contract 05K10HRC
For the design and optimization of Higher-Order-Mode Coupler, used in RF accelerator structures, numerical computations of electromagnetic fields as well as scattering parameter are essential. These computations can be carried out in time domain. In this work the implementation and investigation of a time integration scheme, using the Arbitrary high-order DERivatives (ADER) approach, applied on the Discontinuous Galerkin finite-element method (DG-FEM) is demonstrated for solving 3-D electromagnetic problems in time domain. This scheme combines the advantage of high accuracy with the possibility of an efficient implementation as local time stepping scheme, which reduces the calculation time for special applications considerable. It is implemented in NUDG++*, a framework written in C++ that deals with the DG-FEM for spatial discretization of the Maxwell equations. Accuracy and performance is analyzed by a suitable benchmark.
* Nodal Unstructured Discontinuous Galerkin in C++
 
slides icon Slides FRAAC2 [6.767 MB]