ADVANCED ELECTRIC AND MAGNETIC MATERIAL MODELS FOR FDTD ELECTROMAGNETIC CODES
The modeling of dielectric and magnetic materials in the time domain is required for pulse power applications, pulsed induction accelerators, and advanced transmission lines. For example, most induction accelerator modules require the use of magnetic materials to provide adequate Volt-sec during the acceleration pulse. These models require hysteresis and saturation to simulate the saturation wavefront in a multipulse environment. In high voltage transmission line applications such as shock or soliton lines the dielectric is operating in a highly nonlinear regime, which require nonlinear models. Simple 1-D models are developed for fast parameterization of transmission line structures. In the case of nonlinear dielectrics, a simple analytic model describing the permittivity in terms of electric field is used in a 3-D finite difference time domain code (FDTD). In the case of magnetic materials, both rate independent and rate dependent Hodgdon magnetic material models have been implemented into 3-D FDTD codes and 1-D codes.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 15016257
- Report Number(s):
- UCRL-CONF-212095; TRN: US0502136
- Resource Relation:
- Conference: Presented at: 2005 Particle Accelerator Conference (PAC 2005), Knoxville, TN (US), 05/16/2005--05/29/2005; Other Information: PDF-FILE: 5 ; SIZE: 0.1 MBYTES; PBD: 5 May 2005
- Country of Publication:
- United States
- Language:
- English
Similar Records
3-D electromagnetic modeling of wakefields in accelerator components
3-D electromagnetic modeling of wakefields in accelerator components