SCT_ElectricFieldTool Class Reference

#include <SCT_ElectricFieldTool.h>

Inheritance diagram for SCT_ElectricFieldTool:

Collaboration diagram for SCT_ElectricFieldTool:

Public Member Functions
	SCT_ElectricFieldTool (const std::string &t, const std::string &n, const IInterface *p)
virtual	~SCT_ElectricFieldTool ()=default
virtual StatusCode	initialize () override
virtual StatusCode	finalize () override
virtual double	getElectricField (double positionZ, double fluence, double depletionVoltage, double sensorThickness, double biasVoltage) const override

Private Types
enum	FieldModel { UNIFORM_FIELD , FLAT_DIODE }

Private Attributes
IntegerProperty	m_eFieldModel {this, "EFieldModel", FLAT_DIODE, "UNIFORM_FIELD=0 uniform E-field model, FLAT_DIODE=1 flat diode model"}
TF1	m_model {"pol6", "pol6", 0., 0.03}

Detailed Description

Definition at line 26 of file SCT_ElectricFieldTool.h.

Member Enumeration Documentation

FieldModel

enum SCT_ElectricFieldTool::FieldModel

private

Enumerator
UNIFORM_FIELD
FLAT_DIODE

Definition at line 41 of file SCT_ElectricFieldTool.h.

{UNIFORM_FIELD, FLAT_DIODE};

Constructor & Destructor Documentation

SCT_ElectricFieldTool()

SCT_ElectricFieldTool::SCT_ElectricFieldTool	(	const std::string &	t,
		const std::string &	n,
		const IInterface *	p )

Definition at line 11 of file SCT_ElectricFieldTool.cxx.

                                                                                                        : 
  base_class(t, n, p) {
}

~SCT_ElectricFieldTool()

virtual SCT_ElectricFieldTool::~SCT_ElectricFieldTool ( )

virtualdefault

Member Function Documentation

finalize()

StatusCode SCT_ElectricFieldTool::finalize ( )

overridevirtual

Definition at line 31 of file SCT_ElectricFieldTool.cxx.

                                           {
  return StatusCode::SUCCESS;
}

getElectricField()

double SCT_ElectricFieldTool::getElectricField ( double positionZ, double fluence, double depletionVoltage, double sensorThickness, double biasVoltage ) const

overridevirtual

Parameters

fluence

fluence*

Definition at line 35 of file SCT_ElectricFieldTool.cxx.

                                                                         {
  if ((m_eFieldModel == UNIFORM_FIELD) or (m_eFieldModel == FLAT_DIODE)) {
    //--------------------------------------------------------------
    //   Electric Field Ez
    //--------------------------------------------------------------
    // y is depth and should be give in mm
    // the electric field is returned in V/mm
    //
    double y{positionZ*0.1};    // from mm to cm
    double bulkDepth{sensorThickness*0.1};   // from mm to cm; 
    double Ey{0.};
    y = bulkDepth - y;
    
    //------------ find depletion depth for model=0 and 1 -------------
    double depletionDepth{bulkDepth};
    if (biasVoltage < std::abs(depletionVoltage)) depletionDepth = std::sqrt(biasVoltage/std::abs(depletionVoltage)) * bulkDepth;
    if (y<=depletionDepth){
      //---------- case for uniform electric field ------------------------
      if( m_eFieldModel ==UNIFORM_FIELD ) {
        Ey = biasVoltage / depletionDepth ;   
        Ey = Ey*0.1;
        return Ey / CLHEP::volt;
      }
      
      //---------- case for flat diode model ------------------------------
      if (m_eFieldModel==FLAT_DIODE) {       
        if (biasVoltage > std::abs(depletionVoltage)) {
          Ey = (biasVoltage+depletionVoltage)/depletionDepth - 2.*depletionVoltage*(bulkDepth-y)/(bulkDepth*bulkDepth);
        } else {
          double Emax{2.* depletionDepth * depletionVoltage / (bulkDepth*bulkDepth)};
          Ey = Emax*(1-(bulkDepth-y)/depletionDepth);
        }
        Ey = Ey*0.1;
        return Ey / CLHEP::volt;
      }
    } else {
      return 0.;
    }
  } else {
    //simple toy model --> to be replaced with complete parameterization later
    ATH_MSG_INFO("Using for E-field simple toy model corresponding to 10^15 fluence, full depletion end for holes.");
    
    double E_D{m_model.Eval(positionZ*0.1)*0.1}; //the model is in cm
    return E_D;
  }
 
  return -99.;
}//end method

initialize()

StatusCode SCT_ElectricFieldTool::initialize ( )

overridevirtual

Definition at line 16 of file SCT_ElectricFieldTool.cxx.

                                  {
  m_model.SetParameters(1.04176,
                        2095.14,
                        -606483.,
                        8.60976e+07,
                        -7.20639e+09,
                        3.59418e+11,
                        -9.43812e+12,
                        9.78747e+13);
 
  return StatusCode::SUCCESS;
}

Member Data Documentation

m_eFieldModel

IntegerProperty SCT_ElectricFieldTool::m_eFieldModel {this, "EFieldModel", FLAT_DIODE, "UNIFORM_FIELD=0 uniform E-field model, FLAT_DIODE=1 flat diode model"}

private

Definition at line 43 of file SCT_ElectricFieldTool.h.

{this, "EFieldModel", FLAT_DIODE, "UNIFORM_FIELD=0 uniform E-field model, FLAT_DIODE=1 flat diode model"};

m_model

TF1 SCT_ElectricFieldTool::m_model {"pol6", "pol6", 0., 0.03}

private

Definition at line 44 of file SCT_ElectricFieldTool.h.

{"pol6", "pol6", 0., 0.03};

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

• SCT_ElectricFieldTool.h
• SCT_ElectricFieldTool.cxx