1 #ifndef ALIITSRESPONSE_H
2 #define ALIITSRESPONSE_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
11 class AliITSsegmentation;
15 //----------------------------------------------
17 // ITS response virtual base class
19 class AliITSresponse : public TObject {
21 // Default Constructor
23 // Standard Constructor
24 AliITSresponse(Double_t Thickness);
26 virtual ~AliITSresponse() {}
28 // Configuration methods
31 // Set GeVcharge value (Default value is based on about 20,000 e- by a
32 // mip (1.163E-4GeV) in 300 microns)
33 virtual void SetGeVToCharge(Double_t gc=1.719E+8){fGeVcharge = gc;}
34 // Returns the value fGeVcharge
35 virtual Double_t GetGeVToCharge() const {return fGeVcharge;}
36 // Converts deposited energy to number of electrons liberated
37 virtual Double_t GeVToCharge(Double_t gev) const {return gev*fGeVcharge;}
39 // Diffusion coefficient
40 virtual void SetDiffCoeff(Double_t, Double_t) = 0;
41 // Get diffusion coefficients
42 virtual void DiffCoeff(Double_t &,Double_t &) const = 0;
44 // Temperature in [degree K]
45 virtual void SetTemperature(Double_t t=300.0) {fT = t;}
46 // Get temperature [degree K]
47 virtual Double_t Temperature() const {return fT;}
48 // Set the impurity concentrations in [#/cm^3]
49 virtual void SetImpurity(Double_t n=0.0){fN = n;}
50 // Returns the impurity consentration in [#/cm^3]
51 virtual Double_t Impurity() const {return fN;}
52 // Sets the applied ratio distance/voltage [cm/volt]
53 virtual void SetDistanceOverVoltage(Double_t d,Double_t v){fdv = d/v;}
54 // Sets the applied ration distance/voltage [cm/volt]. Default value
55 // is 300E-4cm/80 volts = 0.000375 cm/volts
56 virtual void SetDistanceOverVoltage(Double_t dv=0.000375){fdv = dv;}
57 // Returns the ration distance/voltage
58 virtual Double_t DistanceOverVoltage() const {return fdv;}
61 virtual const char *DataType() const {return fDataType.Data();}
62 // Type of data - real or simulated
63 virtual void SetDataType(const char *data="simulated") {fDataType=data;}
64 // Set parameters options: "same" or read from "file" or "SetInvalid" or...
65 virtual void SetParamOptions(const char*,const char*) = 0;
66 // Set noise parameters
67 virtual void SetNoiseParam(Double_t, Double_t) = 0;
68 // Number of parameters to be set
69 virtual void SetNDetParam(Int_t) = 0;
70 // Set detector parameters: gain, coupling ...
71 virtual void SetDetParam(Double_t *) = 0;
74 virtual void ParamOptions(char *,char*) const = 0;
75 virtual Int_t NDetParam() const = 0;
76 virtual void GetDetParam(Double_t *) const = 0;
77 virtual void GetNoiseParam(Double_t&, Double_t&) const = 0;
79 // Zero-suppression option - could be 1D, 2D or non-ZeroSuppressed
80 virtual void SetZeroSupp(const char*) = 0;
81 // Get zero-suppression option
82 virtual const char *ZeroSuppOption() const = 0;
84 virtual void SetThresholds(Double_t, Double_t) = 0;
85 virtual void Thresholds(Double_t &, Double_t &) const = 0;
88 virtual void SetFilenames(const char *f1="",const char *f2="",
90 // Set filenames - input, output, parameters ....
91 fFileName1=f1; fFileName2=f2; fFileName3=f3;}
93 virtual void Filenames(char* input,char* baseline,char* param) {
94 strcpy(input,fFileName1.Data()); strcpy(baseline,fFileName2.Data());
95 strcpy(param,fFileName3.Data());}
97 virtual Double_t DriftSpeed() const {return SpeedElectron();};
99 virtual void SetOutputOption(Bool_t write=kFALSE) {fWrite = write;}
101 virtual Bool_t OutputOption() const {return fWrite;}
102 virtual Bool_t Do10to8() const {return kTRUE;}
103 virtual void GiveCompressParam(Int_t *) const =0;
105 // Detector type response methods
106 // Set number of sigmas over which cluster disintegration is performed
107 virtual void SetNSigmaIntegration(Double_t) = 0;
108 // Get number of sigmas over which cluster disintegration is performed
109 virtual Double_t NSigmaIntegration() const = 0;
110 // Set number of bins for the gaussian lookup table
111 virtual void SetNLookUp(Int_t) = 0;
112 // Get number of bins for the gaussian lookup table
113 virtual Int_t GausNLookUp() const {return 0;}
114 // Get scaling factor for bin i-th from the gaussian lookup table
115 virtual Double_t GausLookUp(Int_t) const {return 0.;}
116 // Set sigmas of the charge spread function
117 virtual void SetSigmaSpread(Double_t, Double_t) = 0;
118 // Get sigmas for the charge spread
119 virtual void SigmaSpread(Double_t &,Double_t &) const = 0;
120 // Pulse height from scored quantity (eloss)
121 virtual Double_t IntPH(Double_t) const {return 0.;}
122 // Charge disintegration
123 virtual Double_t IntXZ(AliITSsegmentation *) const {return 0.;}
124 // Electron mobility in Si. [cm^2/(Volt Sec)]. T in degree K, N in #/cm^3
125 virtual Double_t MobilityElectronSiEmp() const ;
126 // Hole mobility in Si. [cm^2/(Volt Sec)] T in degree K, N in #/cm^3
127 virtual Double_t MobilityHoleSiEmp() const ;
128 // Einstein relation for Diffusion Coefficient of Electrons. [cm^2/sec]
129 // T in degree K, N in #/cm^3
130 virtual Double_t DiffusionCoefficientElectron() const ;
131 // Einstein relation for Diffusion Coefficient of Holes. [cm^2/sec]
132 // T in [degree K], N in [#/cm^3]
133 virtual Double_t DiffusionCoefficientHole() const ;
134 // Electron <speed> under an applied electric field E=Volts/cm. [cm/sec]
135 // d distance-thickness in [cm], v in [volts], T in [degree K],
137 virtual Double_t SpeedElectron() const ;
138 // Holes <speed> under an applied electric field E=Volts/cm. [cm/sec]
139 // d distance-thickness in [cm], v in [volts], T in [degree K],
141 virtual Double_t SpeedHole() const ;
142 // Returns the Gaussian sigma == <x^2+z^2> [cm^2] due to the defusion of
143 // electrons or holes through a distance l [cm] caused by an applied
144 // voltage v [volt] through a distance d [cm] in any material at a
145 // temperature T [degree K].
146 virtual Double_t SigmaDiffusion3D(Double_t l) const ;
147 // Returns the Gaussian sigma == <x^2 +y^2+z^2> [cm^2] due to the
148 // defusion of electrons or holes through a distance l [cm] caused by an
149 // applied voltage v [volt] through a distance d [cm] in any material at a
150 // temperature T [degree K].
151 virtual Double_t SigmaDiffusion2D(Double_t l) const ;
152 // Returns the Gaussian sigma == <x^2+z^2> [cm^2] due to the defusion of
153 // electrons or holes through a distance l [cm] caused by an applied
154 // voltage v [volt] through a distance d [cm] in any material at a
155 // temperature T [degree K].
156 virtual Double_t SigmaDiffusion1D(Double_t l) const ;
157 // Prints out the content of this class in ASCII format.
158 virtual void Print(ostream *os) const;
159 // Reads in the content of this class in the format of Print
160 virtual void Read(istream *is);
162 void NotImplemented(const char *method) const {if(gDebug>0)
163 Warning(method,"This method is not implemented for this sub-class");}
165 TString fDataType; // data type - real or simulated
167 Double_t fdv; // The parameter d/v where d is the disance over which the
168 // the potential v is applied d/v [cm/volts]
169 Double_t fN; // the impurity consentration of the material in #/cm^3
170 Double_t fT; // The temperature of the Si in Degree K.
171 Double_t fGeVcharge; // Energy to ionize (free an electron).
172 TString fFileName1; // input keys : run, module #
173 TString fFileName2; // baseline & noise val or output code
174 // signal or monitored bgr.
175 TString fFileName3; // param values or output coded signal
176 Bool_t fWrite; // Write option for the compression algorithms
178 ClassDef(AliITSresponse,2) // Detector type response virtual base class
180 // Input and output function for standard C++ input/output.
181 ostream& operator<<(ostream &os,AliITSresponse &source);
182 istream& operator>>(istream &os,AliITSresponse &source);