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1 | /************************************************************************** | |
2 | * Copyright(c) 1998-2000, 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. * | |
14 | **************************************************************************/ | |
15 | ||
16 | ////////////////////////////////////////////////////////////////////////////// | |
17 | // // | |
18 | // Forward Multiplicity Detector based on Silicon plates // | |
19 | // This class contains the procedures simulation ADC signal for // | |
20 | // the Forward Multiplicity detector : hits -> digits // | |
21 | // ADC signal consists // | |
22 | // - number of detector; // | |
23 | // - number of ring; // | |
24 | // - number of sector; // | |
25 | // - ADC signal in this channel // | |
26 | // // | |
27 | ////////////////////////////////////////////////////////////////////////////// | |
28 | ||
29 | #include <TTree.h> | |
30 | #include <TVector.h> | |
31 | #include <TObjArray.h> | |
32 | #include <TFile.h> | |
33 | #include <TDirectory.h> | |
34 | #include <TRandom.h> | |
35 | ||
36 | ||
37 | #include "AliFMDDigitizer.h" | |
38 | #include "AliFMD.h" | |
39 | #include "AliFMDhit.h" | |
40 | #include "AliFMDdigit.h" | |
41 | #include "AliRunDigitizer.h" | |
42 | ||
43 | #include "AliRun.h" | |
44 | #include "AliLoader.h" | |
45 | #include "AliRunLoader.h" | |
46 | ||
47 | #include <stdlib.h> | |
48 | #include <Riostream.h> | |
49 | #include <Riostream.h> | |
50 | ||
51 | ClassImp(AliFMDDigitizer) | |
52 | ||
53 | //___________________________________________ | |
54 | AliFMDDigitizer::AliFMDDigitizer() :AliDigitizer() | |
55 | { | |
56 | // Default ctor - don't use it | |
57 | ; | |
58 | } | |
59 | ||
60 | //___________________________________________ | |
61 | AliFMDDigitizer::AliFMDDigitizer(AliRunDigitizer* manager) | |
62 | :AliDigitizer(manager) | |
63 | { | |
64 | // ctor which should be used | |
65 | // fDebug =0; | |
66 | #ifdef DEBUG | |
67 | Info("AliFMDDigitizer"," processed"); | |
68 | #endif | |
69 | } | |
70 | ||
71 | //------------------------------------------------------------------------ | |
72 | AliFMDDigitizer::~AliFMDDigitizer() | |
73 | { | |
74 | // Destructor | |
75 | ||
76 | } | |
77 | ||
78 | //------------------------------------------------------------------------ | |
79 | Bool_t AliFMDDigitizer::Init() | |
80 | { | |
81 | // Initialization | |
82 | // cout<<"AliFMDDigitizer::Init"<<endl; | |
83 | return kTRUE; | |
84 | } | |
85 | ||
86 | ||
87 | //--------------------------------------------------------------------- | |
88 | ||
89 | void AliFMDDigitizer::Exec(Option_t * /*option*/) | |
90 | { | |
91 | ||
92 | /* | |
93 | Conver hits to digits: | |
94 | - number of detector; | |
95 | - number of ring; | |
96 | - number of sector; | |
97 | - ADC signal in this channel | |
98 | */ | |
99 | ||
100 | AliRunLoader *inRL, *outRL;//in and out Run Loaders | |
101 | AliLoader *pInFMD, *pOutFMD;// in and out ITSLoaders | |
102 | ||
103 | outRL = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName()); | |
104 | pOutFMD = outRL->GetLoader("FMDLoader"); | |
105 | ||
106 | ||
107 | #ifdef DEBUG | |
108 | Info("Hits2Digits Exec"," start..."; | |
109 | #endif | |
110 | ||
111 | ||
112 | Int_t volume, sector, ring, charge; | |
113 | Float_t e; | |
114 | Float_t de[10][50][520]; | |
115 | Int_t hit; | |
116 | Int_t digit[5]; | |
117 | Int_t ivol, iSector, iRing; | |
118 | for (Int_t i=0; i<10; i++) | |
119 | for(Int_t j=0; j<50; j++) | |
120 | for(Int_t ij=0; ij<520; ij++) | |
121 | de[i][j][ij]=0; | |
122 | Int_t numberOfRings[5]= {512,256,512,256,512}; | |
123 | Int_t numberOfSector[5] = {20,40,20,40,20}; | |
124 | ||
125 | AliFMDhit *fmdHit=0; | |
126 | TTree *tH=0; | |
127 | TBranch *brHits=0; | |
128 | TBranch *brD=0; | |
129 | ||
130 | inRL = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(0)); | |
131 | ||
132 | if (inRL == 0x0) | |
133 | { | |
134 | Error("Exec","Can not find Run Loader for input stream 0"); | |
135 | return; | |
136 | } | |
137 | ||
138 | if (!inRL->GetAliRun()) inRL->LoadgAlice(); | |
139 | ||
140 | AliFMD * fFMD = (AliFMD *) inRL->GetAliRun()->GetDetector("FMD"); | |
141 | ||
142 | if (fFMD == 0x0) | |
143 | { | |
144 | Error("Exec","Can not get FMD from gAlice"); | |
145 | return; | |
146 | } | |
147 | // Loop over files to digitize | |
148 | ||
149 | Int_t nFiles=GetManager()->GetNinputs(); | |
150 | for (Int_t inputFile=0; inputFile<nFiles;inputFile++) | |
151 | { | |
152 | ||
153 | #ifdef DEBUG | |
154 | Info(" Digitizing event number ",fManager->GetOutputEventNr()) ; | |
155 | #endif | |
156 | ||
157 | if (fFMD) | |
158 | { | |
159 | ||
160 | inRL = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(inputFile)); | |
161 | pInFMD = inRL->GetLoader("FMDLoader"); | |
162 | pInFMD->LoadHits("READ"); | |
163 | ||
164 | ||
165 | tH = pInFMD->TreeH(); | |
166 | if (tH == 0x0) | |
167 | { | |
168 | pInFMD->LoadHits("read"); | |
169 | tH = pInFMD->TreeH(); | |
170 | } | |
171 | brHits = tH->GetBranch("FMD"); | |
172 | if (brHits) { | |
173 | fFMD->SetHitsAddressBranch(brHits); | |
174 | }else{ | |
175 | Fatal("Exec","EXEC Branch FMD hit not found"); | |
176 | } | |
177 | TClonesArray *fFMDhits = fFMD->Hits (); | |
178 | ||
179 | Int_t ntracks = (Int_t) tH->GetEntries(); | |
180 | ||
181 | for (Int_t track = 0; track < ntracks; track++) | |
182 | { | |
183 | brHits->GetEntry(track); | |
184 | Int_t nhits = fFMDhits->GetEntries (); | |
185 | ||
186 | for (hit = 0; hit < nhits; hit++) | |
187 | { | |
188 | fmdHit = (AliFMDhit *) fFMDhits->UncheckedAt(hit); | |
189 | ||
190 | volume = fmdHit->Volume (); | |
191 | sector = fmdHit->NumberOfSector (); | |
192 | ring = fmdHit->NumberOfRing (); | |
193 | e = fmdHit->Edep (); | |
194 | de[volume][sector][ring] += e; | |
195 | ||
196 | } //hit loop | |
197 | } //track loop | |
198 | } | |
199 | //if FMD | |
200 | ||
201 | ||
202 | // Put noise and make ADC signal | |
203 | Float_t mipI = 1.664 * 0.04 * 2.33 / 22400; // = 6.923e-6; | |
204 | for ( ivol=1; ivol<=5; ivol++){ | |
205 | for ( iSector=1; iSector<=numberOfSector[ivol-1]; iSector++){ | |
206 | for ( iRing=1; iRing<=numberOfRings[ivol-1]; iRing++){ | |
207 | digit[0]=ivol; | |
208 | digit[1]=iSector; | |
209 | digit[2]=iRing; | |
210 | charge = Int_t (de[ivol][iSector][iRing] / mipI); | |
211 | Int_t pedestal=Int_t(gRandom->Gaus(500,250)); | |
212 | // digit[3]=PutNoise(charge); | |
213 | digit[3]=charge + pedestal; | |
214 | if(digit[3]<= 500) digit[3]=500; | |
215 | //dynamic range from MIP(0.155MeV) to 30MIP(4.65MeV) | |
216 | //1024 ADC channels | |
217 | Float_t channelWidth=(22400*50)/1024; | |
218 | digit[4]=Int_t(digit[3]/channelWidth); | |
219 | if (digit[4]>1024) digit[4]=1024; | |
220 | fFMD->AddDigit(digit); | |
221 | } //ivol | |
222 | } //iSector | |
223 | } //iRing | |
224 | ||
225 | TTree* treeD = pOutFMD->TreeD(); | |
226 | ||
227 | if (treeD == 0x0) { | |
228 | pOutFMD->MakeTree("D"); | |
229 | treeD = pOutFMD->TreeD(); | |
230 | ||
231 | } | |
232 | ||
233 | treeD->Reset(); | |
234 | fFMD->MakeBranchInTreeD(treeD); | |
235 | brD = treeD->GetBranch("FMD"); | |
236 | ||
237 | ||
238 | treeD->Fill(); //this operator does not work for events >1 | |
239 | ||
240 | pOutFMD->WriteDigits("OVERWRITE"); | |
241 | pOutFMD->UnloadHits(); | |
242 | inRL->GetAliRun() ->ResetDigits(); | |
243 | } | |
244 | } | |
245 | ||
246 | ||
247 | ||
248 | ||
249 |