GPhysics Class Reference

Builds and exposes a Geant4 modular physics list based on runtime options. More...

#include <gphysics.h>

Public Member Functions
	GPhysics (const std::shared_ptr< GOptions > &gopts)
	Constructs the physics list builder and (unless requested otherwise) instantiates the physics list.
G4VModularPhysicsList *	getPhysList () const
	Returns the instantiated Geant4 modular physics list.
Public Member Functions inherited from GBase< GPhysics >
	GBase (const std::shared_ptr< GOptions > &gopt, std::string logger_name="")
virtual	~GBase ()
GBase &	operator= (const GBase &)=default

Additional Inherited Members
Protected Attributes inherited from GBase< GPhysics >
std::shared_ptr< GLogger >	log

Detailed Description

GPhysics is a thin integration layer between GEMC options and the Geant4 extensible physics list factory. It is not derived from G4VModularPhysicsList; instead, it creates a physics list instance and exposes it through a runtime modular list returned by getPhysList().

The physics list selection is driven by options defined in gphysics::defineOptions(), most notably:

• phys_list : the reference physics list string (with optional extensions).
• showPhysics : a switch that prints the available physics lists and constructors and exits early.

Ownership note: The run manager owns the returned runtime list. That list retains its factory lists and constructors until shutdown, preserving Geant4's global particle and EM-cache lifetimes. This builder owns neither.

Definition at line 27 of file gphysics.h.

Constructor & Destructor Documentation

GPhysics()

GPhysics::GPhysics

(

const std::shared_ptr< GOptions > &

gopts

)

The constructor reads the relevant options from the provided GOptions instance:

• If the showPhysics switch is enabled, the constructor prints the available Geant4 lists/constructors and returns without creating a physics list.
• Otherwise, it requests the reference physics list specified by the phys_list option and registers additional constructors required by the module defaults.

Parameters

gopts

Shared options container used to retrieve phys_list and showPhysics.

Definition at line 32 of file gphysics.cc.

Member Function Documentation

getPhysList()

G4VModularPhysicsList * GPhysics::getPhysList ( ) const

inlinenodiscard

Returns

Pointer to the G4VModularPhysicsList created by this module, or nullptr if the list could not be created or if showPhysics was requested.

Definition at line 48 of file gphysics.h.

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The documentation for this class was generated from the following files:

• gphysics.h
• gphysics.cc