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::fgkNsigmasDefault = 3.;
41 const Int_t AliITSresponseSDD::fgkNcompsDefault = 121;
43 ClassImp(AliITSresponseSDD)
45 //_________________________________________________________________________
46 AliITSresponseSDD::AliITSresponseSDD():
51 fDriftSpeed(fgkDriftSpeedDefault),
53 fMaxAdc(fgkMaxAdcDefault),
54 fNsigmas(fgkNsigmasDefault),
61 // default constructor
63 SetDiffCoeff(fgkDiffCoeffDefault,fgkDiffCoeff1Default);
64 // SetNLookUp(fgkNcompsDefault);
68 SetDynamicRange(fgkDynamicRangeDefault);
69 SetChargeLoss(fgkfChargeLossDefault);
70 SetParamOptions(fgkParam1Default.Data(),fgkParam2Default.Data());
71 SetZeroSupp(fgkOptionDefault);
77 //______________________________________________________________________
78 AliITSresponseSDD::~AliITSresponseSDD() {
80 if(fGaus) delete fGaus;
84 //______________________________________________________________________
85 Int_t AliITSresponseSDD::Convert8to10(Int_t signal) const {
86 // Undo the lossive 10 to 8 bit compression.
87 // code from Davide C. and Albert W.
89 if(Do10to8()){ // kTRUE if the compression is active
90 if (signal < 0 || signal > 255) {
91 Warning("Convert8to10","out of range signal=%d",signal);
93 } // end if signal <0 || signal >255
95 if (signal < 128) return signal;
97 if (TMath::Odd(signal)) return (128+((signal-128)<<1));
98 else return (128+((signal-128)<<1)+1);
99 } // end if signal < 192
101 if (TMath::Odd(signal)) return (256+((signal-192)<<3)+3);
102 else return (256+((signal-192)<<3)+4);
103 } // end if signal < 224
104 if (TMath::Odd(signal)) return (512+((signal-224)<<4)+7);
105 return (512+((signal-224)<<4)+8);
112 //________________________________________________________________________
113 void AliITSresponseSDD::SetNLookUp(Int_t p1){
114 // Set number of sigmas over which cluster disintegration is performed
116 if (fGaus) delete fGaus;
117 fGaus = new TArrayF(fNcomps+1);
118 for(Int_t i=0; i<=fNcomps; i++) {
119 Float_t x = -fNsigmas + (2.*i*fNsigmas)/(fNcomps-1);
120 (*fGaus)[i] = exp(-((x*x)/2));