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e8189707 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
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. * | |
7d62fb64 | 14 | ***********************************************************************/ |
e8189707 | 15 | |
803d1ab0 | 16 | /* $Id$ */ |
7d62fb64 | 17 | ///////////////////////////////////////////////////////// |
18 | // fast simulation V0 // | |
19 | // // | |
20 | // // | |
21 | ///////////////////////////////////////////////////////// | |
e8189707 | 22 | |
e8189707 | 23 | #include "AliITS.h" |
517784f0 | 24 | #include "AliITShit.h" |
25 | #include "AliITSRecPoint.h" | |
26 | #include "AliITSmodule.h" | |
e8189707 | 27 | #include "AliITSsimulationFastPointsV0.h" |
28 | #include "AliITSstatistics.h" | |
29 | ||
30 | ClassImp(AliITSsimulationFastPointsV0) | |
31 | ||
32 | AliITSsimulationFastPointsV0::AliITSsimulationFastPointsV0() | |
33 | { | |
9de0700b | 34 | // default constructor |
35 | fSx = 0; | |
36 | fSz = 0; | |
37 | } | |
38 | AliITSsimulationFastPointsV0::AliITSsimulationFastPointsV0(const char *dataType){ | |
e8189707 | 39 | //constructor |
d0df5576 | 40 | Info("AliITSsimulationFastPointsV0","Standard constructor %s",dataType); |
e8189707 | 41 | fSx = new AliITSstatistics(2); |
42 | fSz = new AliITSstatistics(2); | |
43 | } | |
7d62fb64 | 44 | //______________________________________________________________________ |
45 | AliITSsimulationFastPointsV0::AliITSsimulationFastPointsV0(const AliITSsimulationFastPointsV0 &/*rec*/):AliITSsimulation(/*rec*/){ | |
46 | // Copy constructor. | |
47 | ||
48 | Error("Copy constructor","Copy constructor not allowed"); | |
49 | ||
50 | } | |
51 | //______________________________________________________________________ | |
52 | AliITSsimulationFastPointsV0& AliITSsimulationFastPointsV0::operator=(const AliITSsimulationFastPointsV0& /*source*/){ | |
53 | // Assignment operator. This is a function which is not allowed to be | |
54 | // done. | |
55 | Error("operator=","Assignment operator not allowed\n"); | |
56 | return *this; | |
57 | } | |
e8189707 | 58 | |
59 | //---------------------------------------------------------- | |
60 | AliITSsimulationFastPointsV0::~AliITSsimulationFastPointsV0() | |
61 | { | |
62 | //destructor | |
9de0700b | 63 | if(fSx) delete fSx; |
64 | if(fSz) delete fSz; | |
e8189707 | 65 | |
66 | } | |
67 | ||
68 | //------------------------------------------------------------- | |
7d62fb64 | 69 | void AliITSsimulationFastPointsV0::CreateFastRecPoints(AliITSmodule *mod,Int_t module,TRandom *rndm, TClonesArray* recp) { |
e8189707 | 70 | // Fast points simulator for all of the ITS. |
7d62fb64 | 71 | |
e8189707 | 72 | Int_t nhit,h,trk,ifirst; |
73 | Float_t x,y,z,t,e;// local coordinate (cm) and time of flight, and dedx. | |
74 | Float_t x1,y1,z1; | |
75 | AliITShit *hit; | |
76 | ||
ac74f489 | 77 | if(rndm!=0) module=0; // fix unsued parameter warnings. |
e8189707 | 78 | fSx->Reset(); // Start out with things clearly zeroed |
79 | fSz->Reset(); // Start out with things clearly zeroed | |
80 | e = 0.; // Start out with things clearly zeroed | |
81 | Double_t weight=1.; | |
82 | nhit = mod->GetNhits(); | |
83 | ifirst = 1; | |
84 | for(h=0;h<nhit;h++){ | |
85 | hit = mod->GetHit(h); | |
86 | hit->GetPositionL(x,y,z,t); | |
87 | if(ifirst) {x1=x;y1=y;z1=z;} | |
88 | e += hit->GetIonization(); | |
89 | trk = hit->GetTrack(); | |
90 | fSx->AddValue((Double_t)x,weight); | |
91 | fSz->AddValue((Double_t)z,weight); | |
92 | ifirst = 0; | |
93 | if(hit->StatusExiting()|| // leaving volume | |
94 | hit->StatusDisappeared()|| // interacted/decayed... | |
95 | hit->StatusStop() // dropped below E cuts. | |
96 | ){ // exiting track, write out RecPoint. | |
97 | // if(fSz->GetRMS()>1.E-1) { | |
98 | // TParticle *part = hit->GetParticle(); | |
99 | // printf("idpart %d energy %f \n",part->GetPdgCode(),part->Energy()); | |
100 | // printf("diffx=%e diffy=%e diffz=%e\n",x-x1,y-y1,z-z1); | |
101 | // } | |
102 | switch (mod->GetLayer()){ | |
103 | case 1: case 2: // SPDs | |
7d62fb64 | 104 | AddSPD(e,mod,trk,recp); |
e8189707 | 105 | break; |
106 | case 3: case 4: // SDDs | |
7d62fb64 | 107 | AddSDD(e,mod,trk,recp); |
e8189707 | 108 | break; |
109 | case 5: case 6: // SSDs | |
7d62fb64 | 110 | AddSSD(e,mod,trk,recp); |
e8189707 | 111 | break; |
112 | } // end switch | |
113 | fSx->Reset(); | |
114 | fSz->Reset(); | |
115 | e = 0.; | |
116 | ifirst = 1; | |
117 | continue; | |
118 | }// end if | |
119 | } // end for h | |
120 | } | |
121 | //_______________________________________________________________________ | |
122 | void AliITSsimulationFastPointsV0::AddSPD(Float_t &e, | |
7d62fb64 | 123 | AliITSmodule* /*mod*/,Int_t trackNumber,TClonesArray* recp){ |
d2f55a22 | 124 | // |
7d62fb64 | 125 | TClonesArray &pt=*recp; |
e8189707 | 126 | const Float_t kmicronTocm = 1.0e-4; |
127 | // const Float_t kdEdXtoQ = ; | |
128 | const Float_t kRMSx = 12.0*kmicronTocm; // microns->cm ITS TDR Table 1.3 | |
129 | const Float_t kRMSz = 70.0*kmicronTocm; // microns->cm ITS TDR Table 1.3 | |
130 | Float_t a1,a2; // general float. | |
131 | AliITSRecPoint rpSPD; | |
132 | ||
133 | rpSPD.fTracks[0]=trackNumber; | |
517784f0 | 134 | rpSPD.fTracks[1]=-3; |
135 | rpSPD.fTracks[2]=-3; | |
e8189707 | 136 | rpSPD.SetX(fSx->GetMean()); |
137 | rpSPD.SetZ(fSz->GetMean()); | |
ac74f489 | 138 | rpSPD.SetdEdX(e); |
e8189707 | 139 | rpSPD.SetQ(1.0); |
140 | a1 = fSx->GetRMS(); a1 *= a1; a1 += kRMSx*kRMSx; | |
141 | // if(a1>1.E5) printf("addSPD: layer=%d track #%d dedx=%e sigmaX2= %e ", | |
142 | // mod->GetLayer(),trackNumber,e,a1); | |
143 | rpSPD.SetSigmaX2(a1); | |
144 | a2 = fSz->GetRMS(); a2 *= a2; a2 += kRMSz*kRMSz; | |
145 | // if(a1>1.E5) printf(" sigmaZ2= %e\n",a2); | |
146 | rpSPD.SetSigmaZ2(a2); | |
e8189707 | 147 | |
7d62fb64 | 148 | //(mod->GetITS())->AddRecPoint(rpSPD); |
149 | new (pt[fNrecp]) AliITSRecPoint(rpSPD); | |
150 | fNrecp++; | |
e8189707 | 151 | } |
152 | //_______________________________________________________________________ | |
153 | void AliITSsimulationFastPointsV0::AddSDD(Float_t &e, | |
7d62fb64 | 154 | AliITSmodule* /*mod*/,Int_t trackNumber,TClonesArray* recp){ |
d2f55a22 | 155 | // |
7d62fb64 | 156 | TClonesArray &pt=*recp; |
e8189707 | 157 | const Float_t kmicronTocm = 1.0e-4; |
158 | const Float_t kdEdXtoQ = 2.778e+8; | |
159 | const Float_t kRMSx = 38.0*kmicronTocm; // microns->cm ITS TDR Table 1.3 | |
160 | const Float_t kRMSz = 28.0*kmicronTocm; // microns->cm ITS TDR Table 1.3 | |
161 | Float_t a1,a2; // general float. | |
162 | AliITSRecPoint rpSDD; | |
163 | ||
164 | rpSDD.fTracks[0]=trackNumber; | |
517784f0 | 165 | rpSDD.fTracks[1]=-3; |
166 | rpSDD.fTracks[2]=-3; | |
e8189707 | 167 | rpSDD.SetX(fSx->GetMean()); |
168 | rpSDD.SetZ(fSz->GetMean()); | |
169 | rpSDD.SetdEdX(e); | |
170 | rpSDD.SetQ(kdEdXtoQ*e); | |
171 | a1 = fSx->GetRMS(); a1 *= a1; a1 += kRMSx*kRMSx; | |
172 | // if(a1>1.E5) printf("addSDD: layer=%d track #%d dedx=%e sigmaX2= %e ", | |
173 | // mod->GetLayer(),trackNumber,e,a1); | |
174 | rpSDD.SetSigmaX2(a1); | |
175 | a2 = fSz->GetRMS(); a2 *= a2; a2 += kRMSz*kRMSz; | |
176 | // if(a1>1.E5) printf(" sigmaZ2= %e\n",a2); | |
177 | rpSDD.SetSigmaZ2(a2); | |
e8189707 | 178 | |
7d62fb64 | 179 | new (pt[fNrecp]) AliITSRecPoint(rpSDD); |
180 | fNrecp++; | |
181 | ||
e8189707 | 182 | } |
183 | //_______________________________________________________________________ | |
184 | void AliITSsimulationFastPointsV0::AddSSD(Float_t &e, | |
7d62fb64 | 185 | AliITSmodule* /*mod*/,Int_t trackNumber,TClonesArray* recp){ |
d2f55a22 | 186 | // |
7d62fb64 | 187 | TClonesArray &pt=*recp; |
e8189707 | 188 | const Float_t kmicronTocm = 1.0e-4; |
189 | const Float_t kdEdXtoQ = 2.778e+8; | |
190 | const Float_t kRMSx = 20.0*kmicronTocm; // microns->cm ITS TDR Table 1.3 | |
191 | const Float_t kRMSz = 830.0*kmicronTocm; // microns->cm ITS TDR Table 1.3 | |
192 | Float_t a1,a2; // general float. | |
193 | AliITSRecPoint rpSSD; | |
194 | ||
195 | rpSSD.fTracks[0]=trackNumber; | |
517784f0 | 196 | rpSSD.fTracks[1]=-3; |
197 | rpSSD.fTracks[2]=-3; | |
e8189707 | 198 | rpSSD.SetX(fSx->GetMean()); |
199 | rpSSD.SetZ(fSz->GetMean()); | |
200 | rpSSD.SetdEdX(e); | |
201 | rpSSD.SetQ(kdEdXtoQ*e); | |
202 | a1 = fSx->GetRMS(); a1 *= a1; a1 += kRMSx*kRMSx; | |
203 | // if(a1>1.E5) printf("addSSD: layer=%d track #%d dedx=%e sigmaX2= %e ", | |
204 | // mod->GetLayer(),trackNumber,e,a1); | |
205 | rpSSD.SetSigmaX2(a1); | |
206 | a2 = fSz->GetRMS(); a2 *= a2; a2 += kRMSz*kRMSz; | |
207 | // if(a1>1.E5) printf(" sigmaZ2= %e RMSx=%e RMSz=%e\n",a2,fSx->GetRMS(),fSz->GetRMS()); | |
208 | rpSSD.SetSigmaZ2(a2); | |
e8189707 | 209 | |
7d62fb64 | 210 | new (pt[fNrecp]) AliITSRecPoint(rpSSD); |
211 | fNrecp++; | |
212 | ||
213 | ||
e8189707 | 214 | } |
215 | //_______________________________________________________________________ | |
216 |