CbmRadDamage Class Reference

Tool class to calculate the non-ionising radiation damage. More...

#include <CbmRadDamage.h>

Inheritance diagram for CbmRadDamage:

Collaboration diagram for CbmRadDamage:

Public Member Functions
	CbmRadDamage ()
virtual	~CbmRadDamage ()
Double_t	GetLeakageCurrent (Double_t fluence, Double_t volume, Double_t temperatur)
Double_t	GetNiel (Int_t type, Double_t energy)
Double_t	GetVfd (Double_t fluence, Double_t d)

Private Member Functions
void	Init ()
void	ReadData (const char *file, std::map< Double_t, Double_t > &map)
	ClassDef (CbmRadDamage, 1)

Private Attributes
std::map< Double_t, Double_t >	niel_neutron
std::map< Double_t, Double_t >	niel_proton
std::map< Double_t, Double_t >	niel_pion
std::map< Double_t, Double_t >	niel_electron
Double_t	fIAlpha
Double_t	fEGap0
Double_t	fEGapAlpha
Double_t	fEGapBeta
Double_t	fNeff0
Double_t	fNeffC
Double_t	fNeffGc
Double_t	fEpsilon

Detailed Description

Tool class to calculate the non-ionising radiation damage.

Author

Volker Friese v.fri.nosp@m.ese@.nosp@m.gsi.d.nosp@m.e

Date

6 December 2011 This class provides some functionality to calculate the effects of non-ionising irradiation on Silicon.

Definition at line 23 of file CbmRadDamage.h.

Constructor & Destructor Documentation

CbmRadDamage()

CbmRadDamage::CbmRadDamage

(

)

Constructor

Definition at line 16 of file CbmRadDamage.cxx.

References Init().

~CbmRadDamage()

CbmRadDamage::~CbmRadDamage ( )

virtual

Destructor

Definition at line 35 of file CbmRadDamage.cxx.

Member Function Documentation

ClassDef()

CbmRadDamage::ClassDef ( CbmRadDamage  , 1    )

private

GetLeakageCurrent()

Double_t CbmRadDamage::GetLeakageCurrent	(	Double_t	fluence,
		Double_t	volume,
		Double_t	temperatur
	)

Get leakage current

Parameters

[in]	fluence	Fluence [neq/cm^2]
[in]	volume	Volume [cm^3]
[in]	temperature	Temeprature [K]

Returns

Leakage current [A]

Calculates the leakage current in Silicon as function of irradiation fluence, volume and temperature.

Formulae provided by S. Chatterji.

Definition at line 40 of file CbmRadDamage.cxx.

References fEGap0, fEGapAlpha, fEGapBeta, and fIAlpha.

GetNiel()

Double_t CbmRadDamage::GetNiel	(	Int_t	type,
		Double_t	energy
	)

Get NIEL factor

Parameters

type	Particle Id (PDG code)
energy	Energy in GeV

Returns

NIEL factor

Calculates the NIEL factor for a given particle type and energy from interpolation of the values tabulated in http://sesam.desy.de/members/gunnar/Si-dfuncs.htm

Will return 0 for particle types other than proton, neutron, pion or electron, or if the energy is below the lowest tabulated value. Will return an asymtotiv value if the energy is above the highest tabulted value.

Definition at line 65 of file CbmRadDamage.cxx.

References niel_electron, niel_neutron, niel_pion, niel_proton, and v.

GetVfd()

Double_t CbmRadDamage::GetVfd	(	Double_t	fluence,
		Double_t	d
	)

Get full depletion voltage

Parameters

fluence	Fluence [neq/cm^2]
d	Thickness [cm]

Returns

Full depletion voltage [V]

Calculates the full depletion voltage of Silicon as function of non-ionising dose and thickness.

Formulae and values provided by S. Chatterji.

Definition at line 121 of file CbmRadDamage.cxx.

References d, fEpsilon, fNeff0, fNeffC, and fNeffGc.

Init()

void CbmRadDamage::Init ( )

private

Initialisation

Reads in tabulated NIEL factors from file and sets proper constants for Silicon.

Definition at line 137 of file CbmRadDamage.cxx.

References fEGap0, fEGapAlpha, fEGapBeta, fEpsilon, fIAlpha, fNeff0, fNeffC, fNeffGc, niel_electron, niel_neutron, niel_pion, niel_proton, and ReadData().

Referenced by CbmRadDamage().

ReadData()

void CbmRadDamage::ReadData ( const char *  file, std::map< Double_t, Double_t > &  map  )

private

Read data from file

Parameters

file	File name (in directory input)
map	Map to be filled

Definition at line 175 of file CbmRadDamage.cxx.

References v.

Referenced by Init().

Member Data Documentation

fEGap0

Double_t CbmRadDamage::fEGap0

private

Constants for temperature dependence of leakage current

Definition at line 92 of file CbmRadDamage.h.

Referenced by GetLeakageCurrent(), and Init().

fEGapAlpha

Double_t CbmRadDamage::fEGapAlpha

private

Definition at line 93 of file CbmRadDamage.h.

Referenced by GetLeakageCurrent(), and Init().

fEGapBeta

Double_t CbmRadDamage::fEGapBeta

private

Definition at line 94 of file CbmRadDamage.h.

Referenced by GetLeakageCurrent(), and Init().

fEpsilon

Double_t CbmRadDamage::fEpsilon

private

Permittivity of Silicon

Definition at line 106 of file CbmRadDamage.h.

Referenced by GetVfd(), and Init().

fIAlpha

Double_t CbmRadDamage::fIAlpha

private

Proportionality constant of leakage current and fluence

Definition at line 88 of file CbmRadDamage.h.

Referenced by GetLeakageCurrent(), and Init().

fNeff0

Double_t CbmRadDamage::fNeff0

private

Constants for effective doping concentration as function of fluence

Definition at line 100 of file CbmRadDamage.h.

Referenced by GetVfd(), and Init().

fNeffC

Double_t CbmRadDamage::fNeffC

private

Definition at line 101 of file CbmRadDamage.h.

Referenced by GetVfd(), and Init().

fNeffGc

Double_t CbmRadDamage::fNeffGc

private

Definition at line 102 of file CbmRadDamage.h.

Referenced by GetVfd(), and Init().

niel_electron

std::map<Double_t, Double_t> CbmRadDamage::niel_electron

private

Definition at line 84 of file CbmRadDamage.h.

Referenced by GetNiel(), and Init().

niel_neutron

std::map<Double_t, Double_t> CbmRadDamage::niel_neutron

private

Tables of NIEL factors as fnct. of energy

Definition at line 81 of file CbmRadDamage.h.

Referenced by GetNiel(), and Init().

niel_pion

std::map<Double_t, Double_t> CbmRadDamage::niel_pion

private

Definition at line 83 of file CbmRadDamage.h.

Referenced by GetNiel(), and Init().

niel_proton

std::map<Double_t, Double_t> CbmRadDamage::niel_proton

private

Definition at line 82 of file CbmRadDamage.h.

Referenced by GetNiel(), and Init().

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

• CbmRadDamage.h
• CbmRadDamage.cxx