Propagates avalanches with the 2d (axi-symmetric) space-charge routine from Lippmann, Riegler (2004) in uniform background fields. More...

#include <AvalancheGridSpaceCharge.hh>

Classes
struct	GridNode
struct	Point

Public Member Functions
	AvalancheGridSpaceCharge ()
	Default constructor.
	AvalancheGridSpaceCharge (Sensor *sensor)
	Constructor.
	~AvalancheGridSpaceCharge ()=default
	Destructor.
void	Reset ()
	Reset the charges.
void	EnableDebugging (const bool option=true)
	Enable/disable debugging (log messages) (default off)
void	EnableStickyAnode (const bool option=true)
	Enable sticky anode (default on)
void	EnableTOF (const bool option=true)
	Enable to use TOF swarm parameters (default on)
void	EnableDiffusion (const bool option=true)
	Enable diffusion (default off)
void	EnableSpaceChargeEffect (const bool option=true)
	Enable space charge calculations (default on)
void	EnableAdaptiveTimeStepping (const bool option=true)
	Enable adaptive time stepping (default on)
void	EnableMC (const bool option=true)
	Enable Monte Carlo (gain/diffusion) up to a certain total number of electrons e.g.
void	SetNCrit (const long NCrit=1e8)
	Set electron saturation value applied for each gas gap if space charge effect is turned off (default 1e8)
void	SetFieldCalculation (const std::string &option="coulomb", const int nof_approx=1.)
	Sets the different options to calculate the space charge field coulomb: free field approximation (relaxation: fdm-relaxation methode (with a condition to stop)) mirror: symmetric 3 layer single gap rpc with metal - resistive layer - gas gap - r.
void	SetK (float option=0.95)
	Set the streamer-inception criterion constant K in the interval (0, ∞) s.t.
void	SetStopAtK (bool option=true)
	Stop the avalanche if K % field is reached.
void	SetSensor (Sensor *sensor)
	Set the sensor (and determine if it includes a parallel-plate component).
void	Set2dGrid (double zmin, double zmax, int zsteps, double rmax, int rsteps)
void	AddElectrons (AvalancheMicroscopic *avmc)
	Import electron (no ions) data from AvalancheMicroscopic class to axi-symmetric grid.
void	AddElectron (double x, double y, double z, double t=0, int n=1)
	Set n electrons onto the grid.
void	AddExtraElectron (double y, int n=1)
	After calling AddElectron, add more electrons on the same transversal line (y-freedom).
void	StartGridAvalanche (double dtime=-1)
	Starts the simulation with the imported electrons for a time step dt (dt = -1 until there are no electrons left in the gap).
long	GetAvalancheSize () const
	Returns the total positive charge in the gap's.
double	GetMeanDistance ()
	Return current mean distance of the electrons on the grid.
long	ReachedKPercent () const
	Returns if 100 * K % background charge has been reached.
const std::vector< std::pair< double, long > >	GetElectronEvolution () const
	Returns the total electron number evolution.
void	ExportGrid (const std::string &filename)
	Export the current grid to a txt file (electron, ions numbers and field magnitude) Take care: only where electrons are located is the space-charge field evaluated!

Private Types
enum class	Elliptic : std::size_t { X , K , E }

Private Member Functions
void	PrepareElectronsFromMicroscopicAvalanche ()
bool	SnapTo2dGrid (double x, double y, double z, long n=1, int gasLayer=0)
void	Prepare2dMesh ()
bool	TransportTimeStep ()
void	DiffuseTimeStep (double dx, long nElectron, double nPosIon, double nNegIon, int iz, int ir, int gasGap)
void	DistributeCharges (long nElectron, double nPosIon, double nNegIon, int iz, int ir, double stepZ, double stepR, int gasGap)
void	GetLocalField (int iz, int ir, double &eFieldZ, double &eFieldR, const std::string &fieldOption, int gasGap)
void	GetFreeChargedRing (int iz, int ir, int fz, int fr, double &eFieldZ, double &eFieldR)
void	GetFreeChargedRing (double zi, double ri, double zf, double rf, double &eFieldZ, double &eFieldR)
bool	AddFieldFromChargeAt (int iz, int ir, int fz, int fr, double N, double &eFieldZ, double &eFieldR)
bool	AddFieldFromChargeAt (int iz, int ir, double zf, double rf, double N, double &eFieldZ, double &eFieldR)
void	GetSwarmParameters (double MagEField, double &alpha, double &eta, double &drift, double &dSigmaL, double &dSigmaT, double &wv, double &wr, double &alphaPT, double &etaPT, int gasGap)
void	GetGlobalCoordinates (double r, double z, double phi, double &xg, double &yg, double &zg, int gasGap)
void	ImportEllipticIntegralValues (const std::string &filename)
void	GetEllipticIntegrals (double x, double &K, double &E)
int	GetGasGapNumber (int layerIndex)

Private Attributes
std::string	m_className = "AvalancheGridSpaceCharge"
bool	m_bDebug = false
bool	m_bDiffusion = false
bool	m_bStick = true
bool	m_bDriftAvalanche = false
bool	m_bImportAvalanche = false
bool	m_bPreparedImportAvalanche = false
long	m_lNCrit = 1e8
bool	m_bSpaceCharge = true
float	m_fStreamerK = 0.95
bool	m_bStopAtK = false
bool	m_bFieldK = false
long	m_lElectronsK
bool	m_bAdaptiveTime = true
bool	m_bImportElliptic = false
bool	m_bUseTOF = true
	Flag if TOF parameters should be used, else Magboltz drift and SST spatial coefficients.
bool	m_bWrAvailable = true
	Flag if bulk drift velocity is available to the simulation.
bool	m_bRatesAvailable = true
	Flag if temporal rates are available to the simulation.
bool	m_bMC = true
int	m_iFieldApprox = 1
double	m_dMinGroups = 50
ComponentParallelPlate *	m_pp = nullptr
Sensor *	m_sensor = nullptr
std::vector< double >	m_zGrid
	Grid points of z-coordinate.
int	m_zSteps = 0
	Number of grid points.
double	m_zStepSize = 0.
std::vector< double >	m_rGrid
	Distance between the grid points.
int	m_rSteps = 0.
	Number of grid points.
double	m_rStepSize = 0.
bool	m_isgridset = false
	Distance between the grid points.
long	m_nTotElectron = 0
	Total amount of electrons at time step.
long	m_nTotPosIons = 0
	total amount of charge created
double	m_time = 0.
	Clock.
double	m_time0 = 0.
	Initial time.
double	m_dt = 0.
	Time step.
bool	m_run = true
	Tracking if the charges are still in the drift gap.
std::vector< std::vector< int > >	m_zGasGapBoundaries
	[k] -> {izLeft, ..., izRight}
std::vector< std::vector< GridNode > >	m_grid
	grid with nodes on it
std::vector< std::vector< Point > >	m_vElectrons
	Electrons to transfer onto grid.
std::vector< std::pair< double, long > >	m_vNElectronEvolution
std::vector< long >	m_vGroupSizes
	same values as Lippmann & Riegler
std::vector< int >	m_vIndexGasGaps = {0}
	Which layer indices are gas layers.
std::vector< std::vector< double > >	m_vCoNGasLayer {}
	Coordinates of center of electron number.
std::vector< double >	m_vYPointInGasGap {}
	Example point (y-coord) in each gas gap.
std::vector< double >	m_ezBkg = {0}
	Uniform background field in z direction, can be negative.
std::vector< int >	m_vSaturatedGaps {}
	Which gas gaps are saturated if saturation is on.
std::string	m_sFieldOption = "coulomb"

Static Private Attributes
static const constexpr std::size_t	elliptic_size {29981}
static const std::array< std::array< double, 3 >, elliptic_size >	m_elliptic

Detailed Description

Propagates avalanches with the 2d (axi-symmetric) space-charge routine from Lippmann, Riegler (2004) in uniform background fields.

Different options to calculate space-charge-fields can be chosen.

Definition at line 18 of file AvalancheGridSpaceCharge.hh.

Member Enumeration Documentation

◆ Elliptic

enum class Garfield::AvalancheGridSpaceCharge::Elliptic : std::size_t

strongprivate

Enumerator
X
K
E

Definition at line 334 of file AvalancheGridSpaceCharge.hh.

  {
    X,
    K,
    E
  };

Constructor & Destructor Documentation

◆ AvalancheGridSpaceCharge() [1/2]

Garfield::AvalancheGridSpaceCharge::AvalancheGridSpaceCharge ( )

inline

Default constructor.

Definition at line 21 of file AvalancheGridSpaceCharge.hh.

21: AvalancheGridSpaceCharge(nullptr) {}

Garfield::AvalancheGridSpaceCharge::AvalancheGridSpaceCharge

AvalancheGridSpaceCharge()

Default constructor.

Definition AvalancheGridSpaceCharge.hh:21

◆ AvalancheGridSpaceCharge() [2/2]

Garfield::AvalancheGridSpaceCharge::AvalancheGridSpaceCharge ( Sensor * sensor )

Constructor.

◆ ~AvalancheGridSpaceCharge()

Garfield::AvalancheGridSpaceCharge::~AvalancheGridSpaceCharge ( )

default

Destructor.

Member Function Documentation

◆ AddElectron()

void Garfield::AvalancheGridSpaceCharge::AddElectron	(	double	x,
		double	y,
		double	z,
		double	t = 0,
		int	n = 1 )

Set n electrons onto the grid.

◆ AddElectrons()

void Garfield::AvalancheGridSpaceCharge::AddElectrons ( AvalancheMicroscopic * avmc )

Import electron (no ions) data from AvalancheMicroscopic class to axi-symmetric grid.

◆ AddExtraElectron()

void Garfield::AvalancheGridSpaceCharge::AddExtraElectron	(	double	y,
		int	n = 1 )

After calling AddElectron, add more electrons on the same transversal line (y-freedom).

◆ AddFieldFromChargeAt() [1/2]

bool Garfield::AvalancheGridSpaceCharge::AddFieldFromChargeAt	(	int	iz,
		int	ir,
		double	zf,
		double	rf,
		double	N,
		double &	eFieldZ,
		double &	eFieldR )

private

◆ AddFieldFromChargeAt() [2/2]

bool Garfield::AvalancheGridSpaceCharge::AddFieldFromChargeAt	(	int	iz,
		int	ir,
		int	fz,
		int	fr,
		double	N,
		double &	eFieldZ,
		double &	eFieldR )

private

◆ DiffuseTimeStep()

void Garfield::AvalancheGridSpaceCharge::DiffuseTimeStep	(	double	dx,
		long	nElectron,
		double	nPosIon,
		double	nNegIon,
		int	iz,
		int	ir,
		int	gasGap )

private

◆ DistributeCharges()

void Garfield::AvalancheGridSpaceCharge::DistributeCharges	(	long	nElectron,
		double	nPosIon,
		double	nNegIon,
		int	iz,
		int	ir,
		double	stepZ,
		double	stepR,
		int	gasGap )

private

◆ EnableAdaptiveTimeStepping()

void Garfield::AvalancheGridSpaceCharge::EnableAdaptiveTimeStepping ( const bool option = true )

inline

Enable adaptive time stepping (default on)

Definition at line 48 of file AvalancheGridSpaceCharge.hh.

                                                            {
    m_bAdaptiveTime = option;
  }

◆ EnableDebugging()

void Garfield::AvalancheGridSpaceCharge::EnableDebugging ( const bool option = true )

inline

Enable/disable debugging (log messages) (default off)

Definition at line 31 of file AvalancheGridSpaceCharge.hh.

31{ m_bDebug = option; }

Garfield::AvalancheGridSpaceCharge::m_bDebug

bool m_bDebug

Definition AvalancheGridSpaceCharge.hh:256

◆ EnableDiffusion()

void Garfield::AvalancheGridSpaceCharge::EnableDiffusion ( const bool option = true )

inline

Enable diffusion (default off)

Definition at line 40 of file AvalancheGridSpaceCharge.hh.

40{ m_bDiffusion = option; }

Garfield::AvalancheGridSpaceCharge::m_bDiffusion

bool m_bDiffusion

Definition AvalancheGridSpaceCharge.hh:257

◆ EnableMC()

void Garfield::AvalancheGridSpaceCharge::EnableMC ( const bool option = true )

inline

Enable Monte Carlo (gain/diffusion) up to a certain total number of electrons e.g.

(1e5) (default on) if disabled: Mean values are considered instead of the statistical processes

Definition at line 56 of file AvalancheGridSpaceCharge.hh.

56{ m_bMC = option; }

Garfield::AvalancheGridSpaceCharge::m_bMC

bool m_bMC

Definition AvalancheGridSpaceCharge.hh:282

◆ EnableSpaceChargeEffect()

void Garfield::AvalancheGridSpaceCharge::EnableSpaceChargeEffect ( const bool option = true )

inline

Enable space charge calculations (default on)

Definition at line 43 of file AvalancheGridSpaceCharge.hh.

                                                         {
    m_bSpaceCharge = option;
  }

◆ EnableStickyAnode()

void Garfield::AvalancheGridSpaceCharge::EnableStickyAnode ( const bool option = true )

inline

Enable sticky anode (default on)

Definition at line 34 of file AvalancheGridSpaceCharge.hh.

34{ m_bStick = option; }

Garfield::AvalancheGridSpaceCharge::m_bStick

bool m_bStick

Definition AvalancheGridSpaceCharge.hh:258

◆ EnableTOF()

void Garfield::AvalancheGridSpaceCharge::EnableTOF ( const bool option = true )

inline

Enable to use TOF swarm parameters (default on)

Definition at line 37 of file AvalancheGridSpaceCharge.hh.

37{ m_bUseTOF = option; }

Garfield::AvalancheGridSpaceCharge::m_bUseTOF

bool m_bUseTOF

Flag if TOF parameters should be used, else Magboltz drift and SST spatial coefficients.

Definition AvalancheGridSpaceCharge.hh:276

◆ ExportGrid()

void Garfield::AvalancheGridSpaceCharge::ExportGrid ( const std::string & filename )

Export the current grid to a txt file (electron, ions numbers and field magnitude) Take care: only where electrons are located is the space-charge field evaluated!

◆ GetAvalancheSize()

long Garfield::AvalancheGridSpaceCharge::GetAvalancheSize ( ) const

inline

Returns the total positive charge in the gap's.

Definition at line 109 of file AvalancheGridSpaceCharge.hh.

109{ return m_nTotPosIons; }

Garfield::AvalancheGridSpaceCharge::m_nTotPosIons

long m_nTotPosIons

total amount of charge created

Definition AvalancheGridSpaceCharge.hh:300

◆ GetElectronEvolution()

const std::vector< std::pair< double, long > > Garfield::AvalancheGridSpaceCharge::GetElectronEvolution ( ) const

inlinenodiscard

Returns the total electron number evolution.

Definition at line 124 of file AvalancheGridSpaceCharge.hh.

                               {
    return m_vNElectronEvolution;
  }

◆ GetEllipticIntegrals()

void Garfield::AvalancheGridSpaceCharge::GetEllipticIntegrals	(	double	x,
		double &	K,
		double &	E )

private

◆ GetFreeChargedRing() [1/2]

void Garfield::AvalancheGridSpaceCharge::GetFreeChargedRing	(	double	zi,
		double	ri,
		double	zf,
		double	rf,
		double &	eFieldZ,
		double &	eFieldR )

private

◆ GetFreeChargedRing() [2/2]

void Garfield::AvalancheGridSpaceCharge::GetFreeChargedRing	(	int	iz,
		int	ir,
		int	fz,
		int	fr,
		double &	eFieldZ,
		double &	eFieldR )

private

◆ GetGasGapNumber()

int Garfield::AvalancheGridSpaceCharge::GetGasGapNumber ( int layerIndex )

inlineprivate

Definition at line 245 of file AvalancheGridSpaceCharge.hh.

                                      {
    auto it =
        std::find(m_vIndexGasGaps.begin(), m_vIndexGasGaps.end(), layerIndex);
    return (it != m_vIndexGasGaps.end())
               ? std::distance(m_vIndexGasGaps.begin(), it)
               : -1;
  }

◆ GetGlobalCoordinates()

void Garfield::AvalancheGridSpaceCharge::GetGlobalCoordinates	(	double	r,
		double	z,
		double	phi,
		double &	xg,
		double &	yg,
		double &	zg,
		int	gasGap )

private

◆ GetLocalField()

void Garfield::AvalancheGridSpaceCharge::GetLocalField	(	int	iz,
		int	ir,
		double &	eFieldZ,
		double &	eFieldR,
		const std::string &	fieldOption,
		int	gasGap )

private

◆ GetMeanDistance()

double Garfield::AvalancheGridSpaceCharge::GetMeanDistance ( )

Return current mean distance of the electrons on the grid.

◆ GetSwarmParameters()

void Garfield::AvalancheGridSpaceCharge::GetSwarmParameters	(	double	MagEField,
		double &	alpha,
		double &	eta,
		double &	drift,
		double &	dSigmaL,
		double &	dSigmaT,
		double &	wv,
		double &	wr,
		double &	alphaPT,
		double &	etaPT,
		int	gasGap )

private

◆ ImportEllipticIntegralValues()

void Garfield::AvalancheGridSpaceCharge::ImportEllipticIntegralValues ( const std::string & filename )

private

◆ Prepare2dMesh()

void Garfield::AvalancheGridSpaceCharge::Prepare2dMesh ( )

private

◆ PrepareElectronsFromMicroscopicAvalanche()

void Garfield::AvalancheGridSpaceCharge::PrepareElectronsFromMicroscopicAvalanche ( )

private

◆ ReachedKPercent()

long Garfield::AvalancheGridSpaceCharge::ReachedKPercent ( ) const

inlinenodiscard

Returns if 100 * K % background charge has been reached.

Definition at line 115 of file AvalancheGridSpaceCharge.hh.

                                             {
    if (m_bFieldK)
      return m_lElectronsK;
    else
      return -1;
  }

◆ Reset()

void Garfield::AvalancheGridSpaceCharge::Reset ( )

Reset the charges.

◆ Set2dGrid()

void Garfield::AvalancheGridSpaceCharge::Set2dGrid	(	double	zmin,
		double	zmax,
		int	zsteps,
		double	rmax,
		int	rsteps )

Parameters

zmin	coordinate along direction of background field
zmax	should more or less be at the end of the gap
zsteps	number of steps
rmax	coordinate perpendicular to background field
rsteps	number of steps

◆ SetFieldCalculation()

void Garfield::AvalancheGridSpaceCharge::SetFieldCalculation	(	const std::string &	option = "coulomb",
		const int	nof_approx = 1. )

inline

Sets the different options to calculate the space charge field coulomb: free field approximation (relaxation: fdm-relaxation methode (with a condition to stop)) mirror: symmetric 3 layer single gap rpc with metal - resistive layer - gas gap - r.

l. - m.

Definition at line 67 of file AvalancheGridSpaceCharge.hh.

                                                      {
    m_sFieldOption = std::move(option);
    m_iFieldApprox = std::move(nof_approx);
  }

◆ SetK()

void Garfield::AvalancheGridSpaceCharge::SetK ( float option = 0.95 )

inline

Set the streamer-inception criterion constant K in the interval (0, ∞) s.t.

1 = 100%

Definition at line 75 of file AvalancheGridSpaceCharge.hh.

75{ m_fStreamerK = option; }

Garfield::AvalancheGridSpaceCharge::m_fStreamerK

float m_fStreamerK

Definition AvalancheGridSpaceCharge.hh:267

◆ SetNCrit()

void Garfield::AvalancheGridSpaceCharge::SetNCrit ( const long NCrit = 1e8 )

inline

Set electron saturation value applied for each gas gap if space charge effect is turned off (default 1e8)

Definition at line 60 of file AvalancheGridSpaceCharge.hh.

60{ m_lNCrit = NCrit; }

Garfield::AvalancheGridSpaceCharge::m_lNCrit

long m_lNCrit

Definition AvalancheGridSpaceCharge.hh:264

◆ SetSensor()

void Garfield::AvalancheGridSpaceCharge::SetSensor ( Sensor * sensor )

Set the sensor (and determine if it includes a parallel-plate component).

◆ SetStopAtK()

void Garfield::AvalancheGridSpaceCharge::SetStopAtK ( bool option = true )

inline

Stop the avalanche if K % field is reached.

Definition at line 78 of file AvalancheGridSpaceCharge.hh.

78{ m_bStopAtK = option; }

Garfield::AvalancheGridSpaceCharge::m_bStopAtK

bool m_bStopAtK

Definition AvalancheGridSpaceCharge.hh:268

◆ SnapTo2dGrid()

bool Garfield::AvalancheGridSpaceCharge::SnapTo2dGrid	(	double	x,
		double	y,
		double	z,
		long	n = 1,
		int	gasLayer = 0 )

private

◆ StartGridAvalanche()

void Garfield::AvalancheGridSpaceCharge::StartGridAvalanche ( double dtime = -1 )

Starts the simulation with the imported electrons for a time step dt (dt = -1 until there are no electrons left in the gap).

◆ TransportTimeStep()

bool Garfield::AvalancheGridSpaceCharge::TransportTimeStep ( )

private

Member Data Documentation

◆ elliptic_size

const constexpr std::size_t Garfield::AvalancheGridSpaceCharge::elliptic_size {29981}

staticconstexprprivate

Definition at line 340 of file AvalancheGridSpaceCharge.hh.

340{29981};

◆ m_bAdaptiveTime

bool Garfield::AvalancheGridSpaceCharge::m_bAdaptiveTime = true

private

Definition at line 272 of file AvalancheGridSpaceCharge.hh.

◆ m_bDebug

bool Garfield::AvalancheGridSpaceCharge::m_bDebug = false

private

Definition at line 256 of file AvalancheGridSpaceCharge.hh.

◆ m_bDiffusion

bool Garfield::AvalancheGridSpaceCharge::m_bDiffusion = false

private

Definition at line 257 of file AvalancheGridSpaceCharge.hh.

◆ m_bDriftAvalanche

bool Garfield::AvalancheGridSpaceCharge::m_bDriftAvalanche = false

private

Definition at line 260 of file AvalancheGridSpaceCharge.hh.

◆ m_bFieldK

bool Garfield::AvalancheGridSpaceCharge::m_bFieldK = false

private

Definition at line 269 of file AvalancheGridSpaceCharge.hh.

◆ m_bImportAvalanche

bool Garfield::AvalancheGridSpaceCharge::m_bImportAvalanche = false

private

Definition at line 262 of file AvalancheGridSpaceCharge.hh.

◆ m_bImportElliptic

bool Garfield::AvalancheGridSpaceCharge::m_bImportElliptic = false

private

Definition at line 273 of file AvalancheGridSpaceCharge.hh.

◆ m_bMC

bool Garfield::AvalancheGridSpaceCharge::m_bMC = true

private

Definition at line 282 of file AvalancheGridSpaceCharge.hh.

◆ m_bPreparedImportAvalanche

bool Garfield::AvalancheGridSpaceCharge::m_bPreparedImportAvalanche = false

private

Definition at line 263 of file AvalancheGridSpaceCharge.hh.

◆ m_bRatesAvailable

bool Garfield::AvalancheGridSpaceCharge::m_bRatesAvailable = true

private

Flag if temporal rates are available to the simulation.

Definition at line 280 of file AvalancheGridSpaceCharge.hh.

◆ m_bSpaceCharge

bool Garfield::AvalancheGridSpaceCharge::m_bSpaceCharge = true

private

Definition at line 265 of file AvalancheGridSpaceCharge.hh.

◆ m_bStick

bool Garfield::AvalancheGridSpaceCharge::m_bStick = true

private

Definition at line 258 of file AvalancheGridSpaceCharge.hh.

◆ m_bStopAtK

bool Garfield::AvalancheGridSpaceCharge::m_bStopAtK = false

private

Definition at line 268 of file AvalancheGridSpaceCharge.hh.

◆ m_bUseTOF

bool Garfield::AvalancheGridSpaceCharge::m_bUseTOF = true

private

Flag if TOF parameters should be used, else Magboltz drift and SST spatial coefficients.

Definition at line 276 of file AvalancheGridSpaceCharge.hh.

◆ m_bWrAvailable

bool Garfield::AvalancheGridSpaceCharge::m_bWrAvailable = true

private

Flag if bulk drift velocity is available to the simulation.

Definition at line 278 of file AvalancheGridSpaceCharge.hh.

◆ m_className

std::string Garfield::AvalancheGridSpaceCharge::m_className = "AvalancheGridSpaceCharge"

private

Definition at line 254 of file AvalancheGridSpaceCharge.hh.

◆ m_dMinGroups

double Garfield::AvalancheGridSpaceCharge::m_dMinGroups = 50

private

Definition at line 285 of file AvalancheGridSpaceCharge.hh.

◆ m_dt

double Garfield::AvalancheGridSpaceCharge::m_dt = 0.

private

Time step.

Definition at line 304 of file AvalancheGridSpaceCharge.hh.

◆ m_elliptic

const std::array< std::array< double, 3 >, AvalancheGridSpaceCharge::elliptic_size > Garfield::AvalancheGridSpaceCharge::m_elliptic

staticprivate

Definition at line 341 of file AvalancheGridSpaceCharge.hh.

◆ m_ezBkg

std::vector<double> Garfield::AvalancheGridSpaceCharge::m_ezBkg = {0}

private

Uniform background field in z direction, can be negative.

Definition at line 329 of file AvalancheGridSpaceCharge.hh.

329{0};

◆ m_fStreamerK

float Garfield::AvalancheGridSpaceCharge::m_fStreamerK = 0.95

private

Definition at line 267 of file AvalancheGridSpaceCharge.hh.

◆ m_grid

std::vector<std::vector<GridNode> > Garfield::AvalancheGridSpaceCharge::m_grid

private

grid with nodes on it

Definition at line 311 of file AvalancheGridSpaceCharge.hh.

◆ m_iFieldApprox

int Garfield::AvalancheGridSpaceCharge::m_iFieldApprox = 1

private

Definition at line 284 of file AvalancheGridSpaceCharge.hh.

◆ m_isgridset

bool Garfield::AvalancheGridSpaceCharge::m_isgridset = false

private

Distance between the grid points.

Keeps track if the grid has been defined.

Definition at line 298 of file AvalancheGridSpaceCharge.hh.

◆ m_lElectronsK

long Garfield::AvalancheGridSpaceCharge::m_lElectronsK

private

Definition at line 270 of file AvalancheGridSpaceCharge.hh.

◆ m_lNCrit

long Garfield::AvalancheGridSpaceCharge::m_lNCrit = 1e8

private

Definition at line 264 of file AvalancheGridSpaceCharge.hh.

◆ m_nTotElectron

long Garfield::AvalancheGridSpaceCharge::m_nTotElectron = 0

private

Total amount of electrons at time step.

Definition at line 299 of file AvalancheGridSpaceCharge.hh.

◆ m_nTotPosIons

long Garfield::AvalancheGridSpaceCharge::m_nTotPosIons = 0

private

total amount of charge created

Definition at line 300 of file AvalancheGridSpaceCharge.hh.

◆ m_pp

ComponentParallelPlate* Garfield::AvalancheGridSpaceCharge::m_pp = nullptr

private

Definition at line 287 of file AvalancheGridSpaceCharge.hh.

◆ m_rGrid

std::vector<double> Garfield::AvalancheGridSpaceCharge::m_rGrid

private

Distance between the grid points.

Grid points of r-coordinate.

Definition at line 294 of file AvalancheGridSpaceCharge.hh.

◆ m_rSteps

int Garfield::AvalancheGridSpaceCharge::m_rSteps = 0.

private

Number of grid points.

Definition at line 295 of file AvalancheGridSpaceCharge.hh.

◆ m_rStepSize

double Garfield::AvalancheGridSpaceCharge::m_rStepSize = 0.

private

Definition at line 296 of file AvalancheGridSpaceCharge.hh.

◆ m_run

bool Garfield::AvalancheGridSpaceCharge::m_run = true

private

Tracking if the charges are still in the drift gap.

Definition at line 306 of file AvalancheGridSpaceCharge.hh.

◆ m_sensor

Sensor* Garfield::AvalancheGridSpaceCharge::m_sensor = nullptr

private

Definition at line 288 of file AvalancheGridSpaceCharge.hh.

◆ m_sFieldOption

std::string Garfield::AvalancheGridSpaceCharge::m_sFieldOption = "coulomb"

private

Definition at line 333 of file AvalancheGridSpaceCharge.hh.

◆ m_time

double Garfield::AvalancheGridSpaceCharge::m_time = 0.

private

Clock.

Definition at line 302 of file AvalancheGridSpaceCharge.hh.

◆ m_time0

double Garfield::AvalancheGridSpaceCharge::m_time0 = 0.

private

Initial time.

Definition at line 303 of file AvalancheGridSpaceCharge.hh.

◆ m_vCoNGasLayer

std::vector<std::vector<double> > Garfield::AvalancheGridSpaceCharge::m_vCoNGasLayer {}

private

Coordinates of center of electron number.

Required: y in [zmin, zmax]

Definition at line 324 of file AvalancheGridSpaceCharge.hh.

324{};

◆ m_vElectrons

std::vector<std::vector<Point> > Garfield::AvalancheGridSpaceCharge::m_vElectrons

private

Electrons to transfer onto grid.

Definition at line 313 of file AvalancheGridSpaceCharge.hh.

◆ m_vGroupSizes

std::vector<long> Garfield::AvalancheGridSpaceCharge::m_vGroupSizes

private

Initial value:

= {
      1500, 800, 400, 200, 100,
      50,   20,  10,  5,   2}

same values as Lippmann & Riegler

Definition at line 316 of file AvalancheGridSpaceCharge.hh.

                                  {
      1500, 800, 400, 200, 100,
      50,   20,  10,  5,   2};  

◆ m_vIndexGasGaps

std::vector<int> Garfield::AvalancheGridSpaceCharge::m_vIndexGasGaps = {0}

private

Which layer indices are gas layers.

Definition at line 320 of file AvalancheGridSpaceCharge.hh.

320{0};

◆ m_vNElectronEvolution

std::vector<std::pair<double, long> > Garfield::AvalancheGridSpaceCharge::m_vNElectronEvolution

private

Definition at line 315 of file AvalancheGridSpaceCharge.hh.

◆ m_vSaturatedGaps

std::vector<int> Garfield::AvalancheGridSpaceCharge::m_vSaturatedGaps {}

private

Which gas gaps are saturated if saturation is on.

Definition at line 331 of file AvalancheGridSpaceCharge.hh.

331{};

◆ m_vYPointInGasGap

std::vector<double> Garfield::AvalancheGridSpaceCharge::m_vYPointInGasGap {}

private

Example point (y-coord) in each gas gap.

Definition at line 326 of file AvalancheGridSpaceCharge.hh.

326{};

◆ m_zGasGapBoundaries

std::vector<std::vector<int> > Garfield::AvalancheGridSpaceCharge::m_zGasGapBoundaries

private

[k] -> {izLeft, ..., izRight}

Definition at line 309 of file AvalancheGridSpaceCharge.hh.

◆ m_zGrid

std::vector<double> Garfield::AvalancheGridSpaceCharge::m_zGrid

private

Grid points of z-coordinate.

Definition at line 290 of file AvalancheGridSpaceCharge.hh.

◆ m_zSteps

int Garfield::AvalancheGridSpaceCharge::m_zSteps = 0

private

Number of grid points.

Definition at line 291 of file AvalancheGridSpaceCharge.hh.

◆ m_zStepSize

double Garfield::AvalancheGridSpaceCharge::m_zStepSize = 0.

private

Definition at line 292 of file AvalancheGridSpaceCharge.hh.

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

/builds/garfield/docs/source/Include/Garfield/AvalancheGridSpaceCharge.hh
/builds/garfield/docs/source/Include/Garfield/EllipticIntegrals.hh

Classes

Public Member Functions

Private Types

Private Member Functions

Private Attributes

Static Private Attributes

Detailed Description

Member Enumeration Documentation

◆ Elliptic

Constructor & Destructor Documentation

◆ AvalancheGridSpaceCharge() [1/2]

◆ AvalancheGridSpaceCharge() [2/2]

◆ ~AvalancheGridSpaceCharge()

Member Function Documentation

◆ AddElectron()

◆ AddElectrons()

◆ AddExtraElectron()

◆ AddFieldFromChargeAt() [1/2]

◆ AddFieldFromChargeAt() [2/2]

◆ DiffuseTimeStep()

◆ DistributeCharges()

◆ EnableAdaptiveTimeStepping()

◆ EnableDebugging()

◆ EnableDiffusion()

◆ EnableMC()

◆ EnableSpaceChargeEffect()

◆ EnableStickyAnode()

◆ EnableTOF()

◆ ExportGrid()

◆ GetAvalancheSize()

◆ GetElectronEvolution()

◆ GetEllipticIntegrals()

◆ GetFreeChargedRing() [1/2]

◆ GetFreeChargedRing() [2/2]

◆ GetGasGapNumber()

◆ GetGlobalCoordinates()

◆ GetLocalField()

◆ GetMeanDistance()

◆ GetSwarmParameters()

◆ ImportEllipticIntegralValues()

◆ Prepare2dMesh()

◆ PrepareElectronsFromMicroscopicAvalanche()

◆ ReachedKPercent()

◆ Reset()

◆ Set2dGrid()

◆ SetFieldCalculation()

◆ SetK()

◆ SetNCrit()

◆ SetSensor()

◆ SetStopAtK()

◆ SnapTo2dGrid()

◆ StartGridAvalanche()

◆ TransportTimeStep()

Member Data Documentation

◆ elliptic_size

◆ m_bAdaptiveTime

◆ m_bDebug

◆ m_bDiffusion

◆ m_bDriftAvalanche

◆ m_bFieldK

◆ m_bImportAvalanche

◆ m_bImportElliptic

◆ m_bMC

◆ m_bPreparedImportAvalanche

◆ m_bRatesAvailable

◆ m_bSpaceCharge

◆ m_bStick

◆ m_bStopAtK

◆ m_bUseTOF

◆ m_bWrAvailable

◆ m_className

◆ m_dMinGroups

◆ m_dt

◆ m_elliptic

◆ m_ezBkg

◆ m_fStreamerK

◆ m_grid

◆ m_iFieldApprox

◆ m_isgridset

◆ m_lElectronsK