MaterialScanSpherical Class Reference

Specific implementation of MaterialScan to do Spherical scanning. More...

#include <MaterialScan.h>

Inheritance diagram for MaterialScanSpherical:

Collaboration diagram for MaterialScanSpherical:

Public Member Functions
	MaterialScanSpherical (TFile *rootFile, const G4ThreeVector &origin, const ScanParams &params, bool doCosTheta)
	Create a Spherical Scan object with the given parameters. More...
bool	createNext (G4ThreeVector &origin, G4ThreeVector &direction) override
	Get the origin and direction for the next scan particle. More...
int	getNRays () const override
	Return the number of rays in this scan.
void	UserSteppingAction (const G4Step *step) override
	Record the material budget for each step of the particles.
std::string	getName () const
	Return the name of the scan.

Protected Member Functions
void	getRay (G4ThreeVector &origin, G4ThreeVector &direction) override
	Create a ray with the current parameter values according to a spherical distribution.
TH2D *	getHistogram (const std::string &name)
	get histogram for a given name, create if needed. More...
void	fillValue (const std::string &name, double value)
	Fill the recorded material budget into the corresponding histogram. More...
bool	checkStep (const G4Step *step)
	check for stuck tracks by looking at the step length

Protected Attributes
G4ThreeVector	m_origin
	Origin for the spherical scan.
bool	m_doCosTheta
	Flag to indicate if polar-angular sampling is uniform in cos(theta) rather than theta.
ScanParams	m_params
	Parameters for the scan.
double	m_curU
	Current value of the parametetr u.
double	m_stepU
	Stepsize for the parameter u.
double	m_curV
	Current value of the parametetr v.
double	m_stepV
	Stepsize for the parameter v.
double	m_curDepth
	Tracklength of the current Ray.
std::map< std::string, std::unique_ptr< TH2D > >	m_regions
	Map holding pointers to all created histograms.
TFile *	m_rootFile
	Pointer to the root file for the histograms.
std::string	m_name
	Name of the scan, will be prefixed to all histogram names.
std::string	m_axisLabel
	Labels for the coordinate axes.

Private Attributes
int	m_zeroSteps {0}
	Count the number of steps with (almost) zero length.

Static Private Attributes
static constexpr double	c_zeroTolerance = 1e-6
	maximum Step length to be considered zero
static constexpr int	c_maxZeroStepsNudge = 10
	maximum number of consecutive zero steps before nudging the track along
static constexpr int	c_maxZeroStepsKill = 20
	maximum number of consecutive zero steps before killing the track

Detailed Description

Specific implementation of MaterialScan to do Spherical scanning.

That is shooting rays from the origin with varying aximuth and polar angle.

Definition at line 167 of file MaterialScan.h.

Constructor & Destructor Documentation

MaterialScanSpherical()

MaterialScanSpherical ( TFile *  rootFile, const G4ThreeVector &  origin, const ScanParams &  params, bool  doCosTheta  )

inline

Create a Spherical Scan object with the given parameters.

Parameters

rootFile	pointer to the ROOT File containing the histograms
origin	Origin for the spherical scan
params	Parameters of the scan
doCosTheta

Definition at line 175 of file MaterialScan.h.

Member Function Documentation

createNext()

bool createNext ( G4ThreeVector &  origin, G4ThreeVector &  direction  )

overridevirtualinherited

Get the origin and direction for the next scan particle.

Parameters

[out]	origin	Origin of the next scan particle
[out]	direction	Direction of the next scan particle

Returns

false if the scan is finished

Implements MaterialScanBase.

Definition at line 99 of file MaterialScan.cc.

fillValue()

void fillValue ( const std::string &  name, double  value  )

protectedinherited

Fill the recorded material budget into the corresponding histogram.

Parameters

name	Name of the histogram
value	Value to store

Definition at line 140 of file MaterialScan.cc.

getHistogram()

TH2D * getHistogram ( const std::string &  name )

protectedinherited

get histogram for a given name, create if needed.

Parameters

name	Name of the histogram

Definition at line 127 of file MaterialScan.cc.

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

• simulation/modules/include/MaterialScan.h
• simulation/modules/src/MaterialScan.cc