celeritas::optical::TrackInitializer Struct Reference

Optical photon data used to initialize a photon track state. More...

#include <TrackInitializer.hh>

Public Attributes
units::MevEnergy	energy
	Photon energy (MeV for consistency with the main Celeritas loop)
Real3	position {0, 0, 0}
	Position [len].
Real3	direction {0, 0, 0}
	Direction.
Real3	polarization {0, 0, 0}
	Polarization vector.
real_type	time {}
	Global lab frame time.
PrimaryId	primary
	Geant4 primary ID for MC truth.
ImplVolumeId	volume {}
	Starting volume.

Detailed Description

Optical photon data used to initialize a photon track state.

These are created in one of two ways:

• by the Generator classes (e.g., celeritas::CherenkovGenerator ) via the OpticalCollector from the main Celeritas EM tracking loop, or from the LocalOpticalGenOffload Geant4 interface class
• directly by the user (for testing or direct Geant4 offloading) for use with the DirectGeneratorAction .

These are converted to tracks in the detail::DirectGeneratorExecutor and detail::GeneratorExecutor classes. In the latter, used for scintillation and cherenkov generation, the TrackInitializer is ephemeral (created locally, never stored).

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The documentation for this struct was generated from the following file:

• TrackInitializer.hh