celeritas::ImportData Struct Reference

Store imported physics data from external sources. More...

#include <ImportData.hh>

Public Types
Type aliases
using	ZInt = int
using	GeoMatIndex = unsigned int
using	ImportSBMap = std::map< ZInt, ImportPhysics2DVector >
using	ImportLivermorePEMap = std::map< ZInt, ImportLivermorePE >
using	ImportAtomicRelaxationMap = std::map< ZInt, ImportAtomicRelaxation >
using	ImportNeutronElasticMap = std::map< ZInt, ImportPhysicsVector >

Public Attributes
std::string	units
	Unit system of the stored data: "cgs", "clhep", or "si".
Material data
std::vector< ImportIsotope >	isotopes
std::vector< ImportElement >	elements
std::vector< ImportGeoMaterial >	geo_materials
std::vector< ImportPhysMaterial >	phys_materials
Spatial region data
std::vector< ImportRegion >	regions
std::vector< ImportVolume >	volumes
Physics data
std::vector< ImportParticle >	particles
std::vector< ImportProcess >	processes
std::vector< ImportMscModel >	msc_models
ImportSBMap	sb_data
ImportLivermorePEMap	livermore_pe_data
ImportNeutronElasticMap	neutron_elastic_data
ImportAtomicRelaxationMap	atomic_relaxation_data
ImportMuPairProductionTable	mu_pair_production_data
Physics configuration options
ImportEmParameters	em_params
ImportTransParameters	trans_params
Optical data
ImportOpticalParameters	optical_params
std::vector< ImportOpticalModel >	optical_models
std::vector< ImportOpticalMaterial >	optical_materials

Detailed Description

Store imported physics data from external sources.

All the data imported to Celeritas is stored in this single entity. This struct can be used in memory or recorded in a ROOT TBranch as a single TTree entry, which will be read by RootImporter to load the data into Celeritas. Currently, the TTree and TBranch names are hardcoded as geant4_data and ImportData in RootImporter .

Each entity's id is defined by its vector position. An ImportElement with id = 3 is stored at elements[3] . The same is true for geometry/physics/materials (all of which have an independent index!) and volumes.

Seltzer-Berger, Livermore PE, and atomic relaxation data are loaded based on atomic numbers, and thus are stored in maps. To retrieve specific data use find(atomic_number) .

The unit system of the data is stored in the "units" string. If empty (backward compatibility) or "cgs" the embedded contents are in CGS. If "clhep" the units are CLHEP (the native Geant4 unit system). The convert_to_native function will convert a data structure in place and update the units label. Refer to base/Units.hh for further information on unit systems.

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

• ImportData.hh