34 citations · 141 across the 12 of their papers we have counts for
12 papers
Reformulation and generalisation of the air-gap element
Herbert De Gersem, Thomas Weiland
The air-gap macro element is reformulated such that rotation, rotor or stator skewing and rotor eccentricity can be incorporated easily. The air-gap element is evaluated using Fast…
A Space-Time Approach for the Time-Domain Simulation in a Rotating Reference Frame
Marius Klimek, Stefan Kurz, Sebastian Schöps +1
We approach the discretisation of Maxwell's equations directly in space-time without making any non-relativistic assumptions with the particular focus on simulations in rotating re…
Discretization of Maxwell's Equations for Non-inertial Observers Using Space-Time Algebra
Mariusz Klimek, Stefan Kurz, Sebastian Schoeps +1
We employ Maxwell's equations formulated in Space-Time Algebra to perform discretization of moving geometries directly in space-time. All the derivations are carried out without an…
Stochastic Modeling and Regularity of the Nonlinear Elliptic Curl-Curl Equation
Ulrich Römer, Sebastian Schöps, Thomas Weiland
This paper addresses the nonlinear elliptic curl-curl equation with uncertainties in the material law. It is frequently employed in the numerical evaluation of magnetostatic fields…
A Space-Time Discontinuous Galerkin Trefftz Method for time dependent Maxwell's equations
Herbert Egger, Fritz Kretzschmar, Sascha M. Schnepp +1
We consider the discretization of electromagnetic wave propagation problems by a discontinuous Galerkin Method based on Trefftz polynomials. This method fits into an abstract frame…
Transparent boundary conditions in a Discontinuous Galerkin Trefftz method
Herbert Egger, Fritz Kretzschmar, Sascha M. Schnepp +2
The modeling and simulation of electromagnetic wave propagation is often accompanied by a restriction to bounded domains which requires the introduction of artificial boundaries. T…
Non-dissipative space-time -discontinuous Galerkin method for the time-dependent Maxwell Equations
Martin Lilienthal, Sascha M. Schnepp, Thomas Weiland
A finite element method for the solution of the time-dependent Maxwell equations in mixed form is presented. The method allows for local -refinement in space and in time. To th…
Discontinuous Galerkin Methods with Trefftz Approximation
Fritz Kretzschmar, Sascha Schnepp, Igor Tsukerman +1
We present a novel Discontinuous Galerkin Finite Element Method for wave propagation problems. The method employs space-time Trefftz-type basis functions that satisfy the underlyin…
Interpretation of transverse tune spectra in a heavy-ion synchrotron at high intensities
R. Singh, O. Boine-Frankenheim, O. Chorniy +6
Two different tune measurement systems have been installed in the GSI heavy-ion synchrotron SIS-18. Tune spectra are obtained with high accuracy using these fast and sensitive syst…
High Bandwidth Pickup Design for Bunch Arrival-time Monitors for Free-Electron Laser
Aleksandar Angelovski, Alexander Kuhl, Matthias Hansli +7
In this paper, we present the design and realization of high bandwidth pickup electrodes with a cutoff frequency above 40 GHz. The proposed cone-shaped pickups are part of a bunch…
Efficient Large Scale Electromagnetics Simulations Using Dynamically Adapted Meshes with the Discontinuous Galerkin Method
Sascha M. Schnepp, Thomas Weiland
A framework for performing dynamic mesh adaptation with the discontinuous Galerkin method (DGM) is presented. Adaptations include modifications of the local mesh step size (h-adapt…
Extension of the Finite Integration Technique including dynamic mesh refinement and its application to self-consistent beam dynamics simulations
Sascha M. Schnepp, Erion Gjonaj, Thomas Weiland
An extension of the framework of the Finite Integration Technique (FIT) including dynamic and adaptive mesh refinement is presented. After recalling the standard formulation of the…