3.2. G4Sipm model¶
The G4SipmModel is one of the most important classes of G4Sipm.
It stores all properties of the SiPM.
3.2.1. Working conditions¶
The model stores the working conditions of the SiPM: environmental temperature and bias voltage.
The environmental temperature can be set via the G4SipmModel::setTemperature() function, the bias voltage with G4SipmModel::setBiasVoltage().
The over-voltage of the SiPM is the difference between the bias voltage and the breakdown voltage
3.2.2. SiPM properties¶
The model also stores the following properties of SiPMs
- breakdown voltage
- number of cells
- cell pitch
- geometrical fill factor
- thermal noise rate
- effective dead time of the cells during the avalanche breakdown
- recovery time of the cells
- optical crosstalk probability
- time constants and probabilities of the long and the short afterpulsing component
- variance of the gain
- photon detection efficiency as a function of the photon wavelength
- thickness of the entrance window
It also holds references to a G4SipmGainMapModel and a G4SipmVoltageTraceModel.
3.2.2.1. SiPM properties as a function of the temperature and over-voltage¶
Please refer to the G4SipmConfigFileModel documentation.
3.2.3. Source¶
Inherited by G4SipmConfigFileModel, G4SipmGenericSipmModel, HamamatsuS1036211100, HamamatsuS1036233050, HamamatsuS1036233100, HamamatsuS10985100 and HamamatsuS12651050.
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class
G4SipmModel¶ SiPM model.
Subclassed by G4SipmConfigFileModel, G4SipmGenericSipmModel, HamamatsuS1036211100, HamamatsuS12573100C, HamamatsuS12573100X, HamamatsuS12651050
Public Functions
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G4SipmModel(G4SipmGainMapModel *gainMapModel, G4SipmVoltageTraceModel *voltageTraceModel)¶ Constructor.
- Parameters
gainMapModel: - the gain map model.voltageTraceModel: - the voltage trace model.
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double
getPitch() const¶ - Return
- double - the complete pitch of the SiPM.
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CLHEP::Hep2Vector
getCellPosition(G4SipmCellId cellId) const¶ - Return
- Hep2Vector - the position relative to the center.
- Parameters
cellId: - the id of the cell.
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G4SipmCellId
getCellId(const double x, const double y, bool respectFillFactor = false) const¶ - Return
- G4SipmCellId - the corresponding cell id.
- Parameters
x: - the x coordinate.y: - the y coordinate.respectFillFactor: - set true to return an invalid cell id if the coordinates are not in an active area.
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bool
isValidCellId(const G4SipmCellId cellId) const¶ - Return
- bool - true if the cellId is valid.
- Parameters
cellId: - the cellId.
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double
getGain(const G4SipmCellId cellId) const¶ - Return
- double - the gain of the cell.
- Parameters
cellId: - the cellId.
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double
getOverVoltage() const¶ - Return
- double - the current overvoltage.
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virtual std::string
getName() const = 0¶ - Return
- string - the name of the model.
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virtual double
getBreakdownVoltage() const = 0¶ - Return
- double - the current breakdown voltage.
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virtual unsigned int
getNumberOfCells() const = 0¶ - Return
- unsigned int - the number of cells.
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virtual double
getCellPitch() const = 0¶ - Return
- double - the pitch of a single cell.
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virtual double
getThermalNoiseRate() const = 0¶ - Return
- double - the thermal noise rate.
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virtual double
getDeadTime() const = 0¶ - Return
- double - the dead time of a SiPM cell.
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virtual double
getRecoveryTime() const = 0¶ - Return
- double - the recovery time of the SiPM cell gain.
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virtual double
getCrossTalkProbability() const = 0¶ - Return
- double - the crosstalk probability.
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virtual double
getApProbLong() const = 0¶ - Return
- double - the probability for long time constant afterpulses.
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virtual double
getApProbShort() const = 0¶ - Return
- double - the probability for short time constant afterpulses.
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virtual double
getApTauLong() const = 0¶ - Return
- double - the time constant of long time constant afterpulses.
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virtual double
getApTauShort() const = 0¶ - Return
- double - the time constant of short time constant afterpulses.
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virtual double
getFillFactor() const = 0¶ - Return
- double - the fill factor.
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virtual double
getGainVariation() const = 0¶ - Return
- double - the gain variance.
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virtual double
getPhotonDetectionEfficiency(double wavelength) const = 0¶ - Return
- double - the photon detection efficiency.
- Parameters
wavelength: - the photon wavelength.
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G4Material *
getMaterial() const¶ - Return
- G4Material - the material of the chip.
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double
getThickness() const¶ - Return
- double - the thickness of the chip.
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G4Material *
getWindowMaterial() const¶ - Return
- G4Material - the material of the window.
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double
getWindowThickness() const¶ - Return
- double - the window thickness.
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double
getTemperature() const¶ - Return
- double - the current temperature of the chip.
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void
setTemperature(double temperature)¶ - Parameters
temperature: - the temperature to set.
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double
getBiasVoltage() const¶ - Return
- double - the bias voltage.
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void
setBiasVoltage(double biasVoltage)¶ - Parameters
biasVoltage: - the biasVoltage to set.
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G4SipmGainMapModel *
getGainMapModel() const¶ - Return
- G4SipmGainMapModel - the gain map model.
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G4SipmVoltageTraceModel *
getVoltageTraceModel() const¶ - Return
- G4SipmVoltageTraceModel - the voltage trace model.
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