sipmMC Class Reference

#include <sipmMC.h>

Public Member Functions
	sipmMC ()
	~sipmMC ()
double	Generate (PhotonList photons)
double	GetCharge ()
GCharge	GetChargeDecomp ()
double	GetGate ()
HitMatrix *	GetHitMatrix ()
int	GetNpix ()
int	GetParaFile (const char *filename)
TF1 *	GetPulseShape ()
double	GetSampling ()
TGraph *	GetWaveform ()
void	SetCutoff (double Cutoff)
void	SetGate (double Gate, bool gateCut=true)
void	SetGeometry (string Geometry)
void	SetGeometry (TH2I *hgeometry)
void	SetPreGate (double preGate)
void	SetPulseShape (double Tau1, double Tau2)
void	SetPulseShape (TF1 *pulse_shape)
void	SetSampling (double Sampling)
void	SetSpectralSensitivity (TGraph *spect)
void	SetSpectralSensitivity (const char *file)
void	UpdatePulseShape ()

Public Attributes
double	EN
double	ENF
double	gain
double	jitter
double	noiseRMS
int	NpixX
int	NpixY
double	Pap_f
double	Pap_s
double	PDE
double	Pxt
double	signalAmp
double	tau_ap_f
double	tau_ap_s
double	tau_dr
double	tau_recovery
double	xSipm
double	ySipm

Detailed Description

Main SiPM simulation class

Generates the waveform and charge from a photon list

Constructor & Destructor Documentation

sipmMC::sipmMC

(

)

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sipmMC::~sipmMC

(

)

Member Function Documentation

double sipmMC::Generate

(

PhotonList

photons

)

Generates SiPM response

operation over-voltage:

has to be 1!!! (only for custom voltage dependence of parameters important)

detected photons:

apply spectral sensitivity if set

photon is not detected

No time offset...signal can appear before photon time stamp! =)

NO JITTER FOR CT and AP implemented yet!

darkrate:

crosstalk & afterpulses (& amplituden):

pixel recovery:

PDE reduced due to pixel recovery:

Dark-rate reduced due to pixel recovery:

amplitude:

recovery

Not effected by jitter!

events in pre_gate

Not effected by jitter!

formular from amplitude = (gain + enf)*Vover/Vop - overflow

= (gain + enf)*Vover/Vop - (gain + enf)*Vover/Vop*overflow/amplitude

= gain*Vover/Vop*(1-overflow/amplitude) + enf*Vover/Vop*(1-overflow/amplitude)

crosstalk:

afterpulses:

mark hit as processed:

Add electronic noise:

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double sipmMC::GetCharge ( )

inline

Returns signal charge

GCharge sipmMC::GetChargeDecomp ( )

inline

Returns decomposition of the signal charge

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double sipmMC::GetGate ( )

inline

Returns length of integration gate in ns

HitMatrix* sipmMC::GetHitMatrix ( )

inline

Returns hitmatrix

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int sipmMC::GetNpix ( )

inline

Returns number of pixels of the SiPM

int sipmMC::GetParaFile

(

const char *

filename

)

Sets SiPM parameters from config file. Returns 0 if successfull, returns 1 if file not found.

check if file exists

get rid of commented and empty lines

stop at end of file

get config parameter (string before '=')

get config parameter value (string after '=')

remove tabs and whitespaces

assign variable

TF1* sipmMC::GetPulseShape ( )

inline

Returns single pixel waveform

double sipmMC::GetSampling ( )

inline

Returns sampling rate

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TGraph * sipmMC::GetWaveform

(

)

Returns simulated signal waveform

reset g_waveform

add random noise to waveform

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void sipmMC::SetCutoff

(

double

Cutoff

)

Sets pixel waveform cutoff

void sipmMC::SetGate	(	double	Gate,
		bool	gateCut = true
	)

Sets integration gate. (For information on "gateCut" see HitMatrix class)

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void sipmMC::SetGeometry

(

string

Geometry

)

Sets pixel arrangement. Only "square" implemented at the moment

void sipmMC::SetGeometry

(

TH2I *

hgeometry

)

Sets custom pixel arrangement from TH2I

void sipmMC::SetPreGate

(

double

preGate

)

Sets time period before integration.

void sipmMC::SetPulseShape	(	double	Tau1,
		double	Tau2
	)

Sets double exponential single pixel waveform with time constants "Tau1", "Tau2". "Sampling" is the sampling time of the simualtion in ns. Waveform is cut off at a fraction "cutOff" of the amplitude

void sipmMC::SetPulseShape

(

TF1 *

pulse_shape

)

Sets single pixel waveform from TF1

void sipmMC::SetSampling

(

double

Sampling

)

Sets waveform sampling

void sipmMC::SetSpectralSensitivity

(

TGraph *

spect

)

Sets the spectral sensitivity via a TGraph

void sipmMC::SetSpectralSensitivity

(

const char *

file

)

Sets the spectral sensitivity via a text file

void sipmMC::UpdatePulseShape

(

)

Builds g_pulse_charge

find pulse shape function amplitude and range

find pulse shape cutoff

calculate pulse charge graph

normalize to 1

Member Data Documentation

double sipmMC::EN

Electronic noise (=pedestal noise)

double sipmMC::ENF

Excess noise (=gain fluctuations)

double sipmMC::gain

Gain

double sipmMC::jitter

Jitter of rising edge tau1

double sipmMC::noiseRMS

RMS of noise

int sipmMC::NpixX

Number of pixels in x. Disregarded when SetGeometry( TH2I* hgeometry ) is used.

int sipmMC::NpixY

Number of pixels in y. Disregarded when SetGeometry( TH2I* hgeometry ) is used.

double sipmMC::Pap_f

After-pulse probability (fast)

double sipmMC::Pap_s

After-pulse probability (slow)

double sipmMC::PDE

Photon detection efficiency

double sipmMC::Pxt

Cross-talk probability (probability for one ore more cross-talk events per avalanche)

double sipmMC::signalAmp

Singel pixel signal amplitude

double sipmMC::tau_ap_f

After-pulse time constant (fast)

double sipmMC::tau_ap_s

After-pulse time constant (slow)

double sipmMC::tau_dr

Thermal pulse time constant

double sipmMC::tau_recovery

Pixel recovery time

double sipmMC::xSipm

Size of active area in x

double sipmMC::ySipm

Size of active area in y

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

• include/sipmMC.h
• src/sipmMC.cpp