1 #ifndef ALIPHOSPULSEGENERATOR_H
2 #define ALIPHOSPULSEGENERATOR_H
3 /* Copyright(c) 2007, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
8 // The class which simulates the pulse shape from the PHOS FEE shaper,
9 // make sampled amplitudes, digitize them.
10 // The shape is described by the function RawResponseFunction
11 // The input parameters for the shape function (time and aplitude) are passed
12 // to the class via constructor.
13 // Other parameters related to the shaper are hard-coded in this class
17 class AliPHOSPulseGenerator : public TObject
20 AliPHOSPulseGenerator(Double_t a=0, Double_t t0=0);
21 AliPHOSPulseGenerator(const AliPHOSPulseGenerator & pulse);
22 virtual ~AliPHOSPulseGenerator();
24 void AddBaseline(Double_t baselineLevel);
25 void AddNoise (Double_t *sigma);
26 void AddNoise (Double_t *sigma, Double_t cutoff);
27 void AddPretriggerSamples(Int_t nPresamples);
28 void GetSamples(Int_t *adcHG, Int_t *adcLG) const;
31 Bool_t GetDigitize() {return fDigitize;}
32 void SetDigitise (Bool_t flag) {fDigitize = flag;}
33 void SetAmplitude(Double_t a) {fAmplitude = a ;}
34 void SetTZero (Double_t t0) {fTZero = t0 ;}
37 Double_t GetRawFormatCapa() const { return fgCapa ; }
38 static Double_t GetRawFormatHighCharge() { return fgHighCharge ; }
39 static Double_t GetRawFormatHighGain() { return fgHighGain ; }
40 static Double_t GetRawFormatHighLowGainFactor() { return fgHighLowGainFactor ; }
41 static Double_t GetRawFormatLowCharge() { return ( fgHighCharge * fgHighLowGainFactor ) ; }
42 static Double_t GetRawFormatLowGain() { return ( fgHighGain / fgHighLowGainFactor ) ; }
43 Int_t GetRawFormatOrder() const { return fgOrder ; }
44 static Int_t GetRawFormatTimeBins() { return fkTimeBins ; }
45 Double_t GetRawFormatTimeMax() const { return fgTimeMax ; }
46 Double_t GetRawFormatTimePeak() const { return fgTimePeak ; }
47 Double_t GetRawFormatTimeTrigger() const { return fgTimeTrigger ; }
48 static Double_t RawResponseFunctionMax(Double_t charge, Double_t gain) ;
49 static Double_t RawResponseFunction (Double_t *x, Double_t *par) ;
51 virtual void Print(Option_t*) const;
52 virtual void Draw (Option_t*);
54 AliPHOSPulseGenerator& operator = (const AliPHOSPulseGenerator &) {
55 Fatal("operator =", "not implemented") ;
60 static Double_t fgCapa ; // capacitor of the preamplifier
61 static Double_t fgHighCharge ; // high charge (to convert energy to charge)
62 static Double_t fgHighGain ; // high gain
63 static Double_t fgHighLowGainFactor ; // high to low gain factor
64 static Int_t fgOrder ; // order of the gamma function
65 static const Int_t fkTimeBins = 64 ; // number of sampling bins
66 static Double_t fgTimeMax ; // maximum sampled time
67 static Double_t fgTimePeak ; // peaking time
68 static Double_t fgTimeTrigger ; // time of the trigger for the RO signal
71 Double_t fAmplitude; // signal amplitude in GeV
72 Double_t fTZero; // signal start time in ns
73 Double_t *fDataHG; // samples array for high gain
74 Double_t *fDataLG; // samples array for low gain
75 Bool_t fDigitize; // true is samples should be rounded to integers
77 ClassDef(AliPHOSPulseGenerator,1)