1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
18 //////////////////////////////////////////////////////
19 // Base response class forITS //
20 // It is used to set static data members //
21 // connected to parameters equal for all //
25 //////////////////////////////////////////////////////
29 #include "AliITSresponseSDD.h"
31 const Int_t AliITSresponseSDD::fgkMaxAdcDefault = 1024;
32 const Float_t AliITSresponseSDD::fgkDynamicRangeDefault = 132.;
33 const Float_t AliITSresponseSDD::fgkfChargeLossDefault = 0;
34 const Float_t AliITSresponseSDD::fgkDiffCoeffDefault = 3.23;
35 const Float_t AliITSresponseSDD::fgkDiffCoeff1Default = 30.;
36 const TString AliITSresponseSDD::fgkParam1Default = "same";
37 const TString AliITSresponseSDD::fgkParam2Default = "same";
38 const TString AliITSresponseSDD::fgkOptionDefault = "1D";
39 const Float_t AliITSresponseSDD::fgkDriftSpeedDefault = 7.3;
40 const Float_t AliITSresponseSDD::fgkTimeOffsetDefault = 55.07;
41 const Float_t AliITSresponseSDD::fgkADC2keVDefault = 5.243;
42 const Float_t AliITSresponseSDD::fgkNsigmasDefault = 3.;
43 const Int_t AliITSresponseSDD::fgkNcompsDefault = 121;
45 ClassImp(AliITSresponseSDD)
47 //_________________________________________________________________________
48 AliITSresponseSDD::AliITSresponseSDD():
53 fTimeOffset(fgkTimeOffsetDefault),
54 fADC2keV(fgkADC2keVDefault),
56 fMaxAdc(fgkMaxAdcDefault),
57 fNsigmas(fgkNsigmasDefault),
59 fNcomps(fgkNcompsDefault),
64 // default constructor
66 SetDiffCoeff(fgkDiffCoeffDefault,fgkDiffCoeff1Default);
67 // SetNLookUp(fgkNcompsDefault);
71 SetDynamicRange(fgkDynamicRangeDefault);
72 SetChargeLoss(fgkfChargeLossDefault);
73 SetParamOptions(fgkParam1Default.Data(),fgkParam2Default.Data());
74 SetZeroSupp(fgkOptionDefault);
80 //______________________________________________________________________
81 AliITSresponseSDD::~AliITSresponseSDD() {
83 if(fGaus) delete fGaus;
87 //______________________________________________________________________
88 Int_t AliITSresponseSDD::Convert8to10(Int_t signal) const {
89 // Undo the lossive 10 to 8 bit compression.
90 // code from Davide C. and Albert W.
92 if(Do10to8()){ // kTRUE if the compression is active
93 if (signal < 0 || signal > 255) {
94 Warning("Convert8to10","out of range signal=%d",signal);
96 } // end if signal <0 || signal >255
98 if (signal < 128) return signal;
100 if (TMath::Odd(signal)) return (128+((signal-128)<<1));
101 else return (128+((signal-128)<<1)+1);
102 } // end if signal < 192
104 if (TMath::Odd(signal)) return (256+((signal-192)<<3)+3);
105 else return (256+((signal-192)<<3)+4);
106 } // end if signal < 224
107 if (TMath::Odd(signal)) return (512+((signal-224)<<4)+7);
108 return (512+((signal-224)<<4)+8);
115 //________________________________________________________________________
116 void AliITSresponseSDD::SetNLookUp(Int_t p1){
117 // Set number of sigmas over which cluster disintegration is performed
119 if (fGaus) delete fGaus;
120 fGaus = new TArrayF(fNcomps+1);
121 for(Int_t i=0; i<=fNcomps; i++) {
122 Float_t x = -fNsigmas + (2.*i*fNsigmas)/(fNcomps-1);
123 (*fGaus)[i] = exp(-((x*x)/2));