GPU-Accelerated Ray Tracing for Radiation Dose Mapping
Topic:
GPU-Accelertaed Ray Tracing for Radiation Dose Mapping
Presenter:
Colin Brennan, EMA Scientist II
Abstract:
A core problem in radiation hardening analysis is the prediction of cumulative ionizing dose in electronics while exposed to the space environment. The most common techniques for modeling this problem rely on either Monte Carlo particle transport, or ray-tracing sector analysis using dose-depth curves. For years, Ansys Charge Plus has been capable of producing ionizing dose profiles in 3-D finite element meshes by the Monte Carlo method. To complement this capability, a new ray-tracing dose estimation tool has been developed and released in the most recent version of Charge Plus (2024R2). This tool is built on OptiX, a highly optimized GPU ray-tracing engine developed by Nvidia. This allows for the fast creation of ionizing dose maps for sensitive components in arbitrarily complex CAD geometries. Along with this, Charge Plus provides a convenient interface with Ansys STK for producing characteristic dose-depth curves for different orbital scenarios. Join us to learn about the underlying algorithms employed by this tool, and how the combined capabilities of the STK coupling, Monte Carlo transport module, and ray-tracing tool can be used in a complete workflow for shielding analysis.
