Core physics¶ The core of celeritas provides the physics and stepping loop implementation for the Celeritas codebase. Problem definition GeoParamsInterface MaterialParams ParticleParams PhysicsParams CutoffParams Stepping mechanics Actions Initialization and execution Track sort order Propagation and magnetic field Propagation Field data input and options Random number generation Engines Distributions Imported data Material and geometry properties Physics properties Diagnostics ActionDiagnostic StepDiagnostic SlotDiagnostic Step writers