Application of the Ceptre Code to Cable SGEMP Problems

A computational capability has been developed for cable System Generated Electromagnetic Pulse (SGEMP) simulations. Specifically, CEPTRE (Coupled Electron-Photon Transport for Radiation Effects) is used to perform the radiation transport and provide charge and energy deposition profiles along with the net electron current off the conductors to the electrical response simulation code CABANA (CABle ANAlysis). An overview of CEPTRE is presented. An introduction to cable SGEMP analysis is given. The very nature of cable SGEMP calculations results in numerical difficulties for the unique solution strategy employed by CEPTRE and speed-up strategies have been developed. These strategies are discussed and demonstrated here for a specific cable SGEMP application.