class AliITSUSimuParam: public TObject
Implementation of the class to store the parameters used in the simulation of ITS upgrade detectors On the fRespFunParam array content: it holds the AliITSUParamList type objects with data for response simulation of type of detector (e.g. Class/Segmentation) used in the Config.C The convention is: 1) AliITSUParamList::GetUniqueID() defines detectorID (see header of the AliITSUGeomTGeo.h) for which these response data is defined 2) AliITSUParamList::GetID() defines the charge spread function served by these data, for instance in case of Pixels these are the functions aliased to enums kSpreadFunGauss2D... in AliITSUSimulationPix.h 3) Each detector class is free to interpred the content of AliITSUParamList. AliITSUSimulationPix, for instance requests that first AliITSUSimulationPix::kParamStart are reserved for some standard properties (like number of neighbours around the pixel with the charge is injected to consider for the charge spread (the values may be different for different finctions)
Function Members (Methods)
public:
protected:
| virtual void | TObject::DoError(int level, const char* location, const char* fmt, va_list va) const |
| void | TObject::MakeZombie() |
Data Members
public:
| enum { | kNoCouplingPix | |
| kOldCouplingPix | ||
| kNewCouplingPix | ||
| kMaxCouplingOptPix | ||
| }; | ||
| enum TObject::EStatusBits { | kCanDelete | |
| kMustCleanup | ||
| kObjInCanvas | ||
| kIsReferenced | ||
| kHasUUID | ||
| kCannotPick | ||
| kNoContextMenu | ||
| kInvalidObject | ||
| }; | ||
| enum TObject::[unnamed] { | kIsOnHeap | |
| kNotDeleted | ||
| kZombie | ||
| kBitMask | ||
| kSingleKey | ||
| kOverwrite | ||
| kWriteDelete | ||
| }; |
protected:
| static const Float_t | fgkDOverVDefault | default distance over voltage |
| static const Float_t | fgkGeVtoChargeDefault | default energy to ionize (free an electron) in GeV |
| static const Int_t | fgkNcompsDefault | default for fNcomps |
| static const Float_t | fgkNsigmasDefault | default for fNsigmas |
| static const Float_t | fgkPixBiasVoltageDefault | default for fPixBiasVoltage |
| static const Float_t | fgkPixCouplColDefault | default for fPixCouplCol |
| static const Float_t | fgkPixCouplRowDefault | default for fPixCouplRow |
| static const UInt_t | fgkPixCouplingOptDefault | type of pixel Coupling (old or new) |
| static const Float_t | fgkPixEccDiffDefault | default for fPixEccDiff |
| static const Float_t | fgkPixFakeRateDefault | default monopix fake rate |
| static const Float_t | fgkPixLorentzHoleWeightDefault | default for fPixLorentzHoleWeight |
| static const Float_t | fgkPixMinElToAddDefault | default min number of electrons to add to sdigit |
| static const Bool_t | fgkPixNoiseInAllMod | default switch to add digital noise to every chip |
| static const Float_t | fgkPixThrSigmaDefault | default for fSigma |
| static const Float_t | fgkPixThreshDefault | default for fThresh |
| static const Float_t | fgkTDefault | default temperature |
private:
| Float_t | fDOverV | The parameter d/v where d is the disance over which the the potential v is applied d/v [cm/volts] |
| Float_t | fGeVcharge | Energy to ionize (free an electron) in GeV |
| Float_t* | fLrROCycleShift | [fNLayers] optional RO cycle shift for each layer (in fraction of RO cycle length if abs<1) |
| UInt_t | fNLayers | number of layers |
| UInt_t | fNPix | number of Pix type detectors |
| Bool_t | fPixAddNoisyFlag | Flag saying whether noisy pixels should be added to digits |
| Float_t* | fPixBaseline | [fNPix] Pix electronic noise: baseline |
| Float_t | fPixBaselineDef | Pix electronic noise: baseline |
| Float_t* | fPixBiasVoltage | [fNPix] Bias Voltage for the Pix |
| Float_t | fPixBiasVoltageDef | Bias Voltage for the Pix |
| Float_t | fPixCouplCol | Pix Coupling parameter along the cols |
| UInt_t | fPixCouplOpt | Pix Coupling Option |
| Float_t | fPixCouplRow | Pix Coupling parameter along the rows |
| Float_t | fPixFakeRateDef | Fake rate for the monopix |
| Bool_t | fPixLorentzDrift | Flag to decide whether to simulate the Lorentz Drift or not in Pix |
| Float_t | fPixLorentzHoleWeight | Lorentz Angle is computed for Pix as average of Hole and Electron |
| Float_t | fPixMinElToAddDef | min number of electrons to add |
| Float_t* | fPixNoise | [fNPix] Pix electronic noise: sigma |
| Float_t | fPixNoiseDef | Pix electronic noise: sigma |
| Bool_t | fPixNoiseInAllMod | Add digital noise to every chip |
| Bool_t | fPixRemoveDeadFlag | Flag saying whether dead pixels should be removed from digits |
| Float_t* | fPixSigma | [fNPix] Pix threshold fluctuations spread |
| Float_t* | fPixThrSigma | [fNPix] Pix Threshold fluctuation |
| Float_t | fPixThrSigmaDef | Pix Threshold fluctuation |
| Float_t* | fPixThresh | [fNPix] Pix Threshold value |
| Float_t | fPixThreshDef | Pix Threshold value |
| TObjArray | fRespFunParam | set of parameterizations for response function (AliITSUParamList) |
| Float_t | fT | The temperature of the Si in Degree K. |
Class Charts
| Inheritance Chart: | ||||||||
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Function documentation
void SetNLayers(Int_t nl)
Double_t CalcProbNoiseOverThreshold(UInt_t mod) const
calculate probability of noise exceeding the threshold
Double_t LorentzAngleHole(Double_t bz) const
Computes the Lorentz angle for electrons in Si
Input: magnetic Field in KGauss
Output: Lorentz angle in radians (positive if Bz is positive)
Main Reference: NIM A 497 (2003) 389–396.
"An algorithm for calculating the Lorentz angle in silicon detectors", V. Bartsch et al.
Double_t LorentzAngleElectron(Double_t bz) const
Computes the Lorentz angle for electrons in Si
Input: magnetic Field in KGauss
Output: Lorentz angle in radians (positive if Bz is positive)
Main Reference: NIM A 497 (2003) 389–396.
"An algorithm for calculating the Lorentz angle in silicon detectors", V. Bartsch et al.
Double_t CalcProbNoiseOverThreshold(double base, double noise, double thresh)
calculate probability of noise exceeding the threshold if (mean+6*sigma<thresh) return 0; if (mean-6*sigma>thresh) return 1.; const double ksqrt2 = 1.41421356237309515e+00; return 0.5*AliMathBase::ErfcFast( (thresh-mean)/(sigma*ksqrt2));
Double_t GenerateNoiseQFunction(double prob, double mean, double sigma)
generate random noise exceeding threshold probability prob, i.e. find a random point in the right tail of the gaussian(base,noise), provided that the tail integral = prob const double ksqrt2 = 1.41421356237309515e+00; return mean+sigma*ksqrt2*TMath::ErfcInverse(2*prob*(1.-gRandom->Rndm()));
void GetPixCouplingParam(Double_t& col, Double_t& row) const
{col = fPixCouplCol; row = fPixCouplRow;}const AliITSUParamList* GetRespFunParams(Int_t i) const
{return (const AliITSUParamList*)fRespFunParam[i];}