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ede9aff7 | 1 | |
2 | /************************************************************************** | |
3 | * Copyright(c) 1998-2000, ALICE Experiment at CERN, All rights reserved. * | |
4 | * * | |
5 | * Author: The ALICE Off-line Project. * | |
6 | * Contributors are mentioned in the code where appropriate. * | |
7 | * * | |
8 | * Permission to use, copy, modify and distribute this software and its * | |
9 | * documentation strictly for non-commercial purposes is hereby granted * | |
10 | * without fee, provided that the above copyright notice appears in all * | |
11 | * copies and that both the copyright notice and this permission notice * | |
12 | * appear in the supporting documentation. The authors make no claims * | |
13 | * about the suitability of this software for any purpose. It is * | |
14 | * provided "as is" without express or implied warranty. * | |
15 | **************************************************************************/ | |
16 | ||
17 | ||
18 | #include <TTree.h> | |
ede9aff7 | 19 | #include <TFile.h> |
20 | #include <TDirectory.h> | |
21 | #include <TRandom.h> | |
e73d68f2 | 22 | #include <TArrayI.h> |
2b4678e2 | 23 | #include <TError.h> |
e4da63c2 | 24 | #include <TH1F.h> |
ede9aff7 | 25 | |
e4da63c2 | 26 | #include "AliLog.h" |
ede9aff7 | 27 | #include "AliSTARTDigitizer.h" |
28 | #include "AliSTART.h" | |
29 | #include "AliSTARThit.h" | |
30 | #include "AliSTARTdigit.h" | |
31 | #include "AliRunDigitizer.h" | |
affef71b | 32 | #include <AliDetector.h> |
ede9aff7 | 33 | #include "AliRun.h" |
affef71b | 34 | #include <AliLoader.h> |
35 | #include <AliRunLoader.h> | |
ede9aff7 | 36 | #include <stdlib.h> |
ef0750c2 | 37 | #include <Riostream.h> |
38 | #include <Riostream.h> | |
ede9aff7 | 39 | |
40 | ClassImp(AliSTARTDigitizer) | |
41 | ||
42 | //___________________________________________ | |
43 | AliSTARTDigitizer::AliSTARTDigitizer() :AliDigitizer() | |
44 | { | |
45 | // Default ctor - don't use it | |
46 | ; | |
47 | } | |
48 | ||
49 | //___________________________________________ | |
50 | AliSTARTDigitizer::AliSTARTDigitizer(AliRunDigitizer* manager) | |
51 | :AliDigitizer(manager) | |
52 | { | |
f540341d | 53 | // cout<<"AliSTARTDigitizer::AliSTARTDigitizer"<<endl; |
ede9aff7 | 54 | // ctor which should be used |
e4da63c2 | 55 | |
56 | AliDebug(1,"processed"); | |
57 | ||
58 | ftimeTDC = new TArrayI(24); | |
59 | fADC = new TArrayI(24); | |
174d209f | 60 | |
61 | TFile* file = TFile::Open("$ALICE_ROOT/START/PMTefficiency.root"); | |
62 | fEff = (TH1F*) file->Get("hEff")->Clone(); | |
63 | fEff->SetDirectory(NULL); | |
64 | file->Close(); | |
65 | delete file; | |
ede9aff7 | 66 | } |
67 | ||
68 | //------------------------------------------------------------------------ | |
69 | AliSTARTDigitizer::~AliSTARTDigitizer() | |
70 | { | |
71 | // Destructor | |
e4da63c2 | 72 | |
73 | AliDebug(1,"START"); | |
74 | delete ftimeTDC; | |
75 | delete fADC; | |
174d209f | 76 | delete fEff; |
ede9aff7 | 77 | } |
78 | ||
79 | //------------------------------------------------------------------------ | |
80 | Bool_t AliSTARTDigitizer::Init() | |
81 | { | |
82 | // Initialization | |
e4da63c2 | 83 | AliDebug(1," Init"); |
ede9aff7 | 84 | return kTRUE; |
85 | } | |
86 | ||
87 | ||
88 | //--------------------------------------------------------------------- | |
89 | ||
dc63cec5 | 90 | void AliSTARTDigitizer::Exec(Option_t* /*option*/) |
ede9aff7 | 91 | { |
92 | ||
affef71b | 93 | /* |
94 | Produde digits from hits | |
95 | digits is TObject and includes | |
96 | We are writing array if left & right TDC | |
97 | left & right ADC (will need for slow simulation) | |
98 | TOF first particle left & right | |
99 | mean time and time difference (vertex position) | |
100 | ||
101 | */ | |
88cb7938 | 102 | |
103 | AliRunLoader *inRL, *outRL;//in and out Run Loaders | |
affef71b | 104 | AliLoader *pInStartLoader, *pOutStartLoader;// in and out STARTLoaders |
88cb7938 | 105 | |
106 | outRL = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName()); | |
affef71b | 107 | pOutStartLoader = outRL->GetLoader("STARTLoader"); |
88cb7938 | 108 | |
e4da63c2 | 109 | AliDebug(1,"start..."); |
110 | ||
ede9aff7 | 111 | // |
112 | // From hits to digits | |
113 | // | |
e73d68f2 | 114 | Int_t hit, nhits; |
affef71b | 115 | Float_t meanTime; |
e4da63c2 | 116 | Int_t countE[24]; |
117 | Int_t volume,pmt,tr,sumRight; | |
118 | Int_t bestRightTDC,bestLeftTDC; | |
119 | Float_t time[24]={24*0}; | |
120 | Float_t besttime[24]={24*0}; | |
121 | Float_t timeGaus[37]={24*0}; | |
122 | Float_t channelWidth=25.; //ps | |
e73d68f2 | 123 | |
ede9aff7 | 124 | AliSTARThit *startHit; |
125 | TBranch *brHits=0; | |
e4da63c2 | 126 | |
6fc133d2 | 127 | pOutStartLoader->LoadDigits("UPDATE");//probably it is necessary to load them before |
ede9aff7 | 128 | fdigits= new AliSTARTdigit(); |
6fc133d2 | 129 | pOutStartLoader->GetDigitsDataLoader()->GetBaseLoader(0)->Post(fdigits); |
ede9aff7 | 130 | |
131 | Int_t nFiles=fManager->GetNinputs(); | |
132 | for (Int_t inputFile=0; inputFile<nFiles; inputFile++) { | |
6fc133d2 | 133 | if (inputFile < nFiles-1) { |
e4da63c2 | 134 | AliWarning(Form("ignoring input stream %d", inputFile)); |
6fc133d2 | 135 | continue; |
e4da63c2 | 136 | |
6fc133d2 | 137 | } |
e73d68f2 | 138 | |
affef71b | 139 | Float_t besttimeright=9999.; |
140 | Float_t besttimeleft=9999.; | |
e4da63c2 | 141 | Float_t timeDiff; |
e73d68f2 | 142 | sumRight=0; |
e4da63c2 | 143 | for (Int_t i0=0; i0<24; i0++) |
e73d68f2 | 144 | { |
e4da63c2 | 145 | time[i0]=9999; besttime[i0]=9999; countE[i0]=0; |
e73d68f2 | 146 | } |
88cb7938 | 147 | |
148 | inRL = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(inputFile)); | |
6fc133d2 | 149 | if (!inRL->GetAliRun()) inRL->LoadgAlice(); |
150 | AliSTART *fSTART = (AliSTART*) inRL->GetAliRun()->GetDetector("START"); | |
affef71b | 151 | pInStartLoader = inRL->GetLoader("STARTLoader"); |
152 | pInStartLoader->LoadHits("READ");//probably it is necessary to load them before | |
affef71b | 153 | TClonesArray *fHits = fSTART->Hits (); |
ede9aff7 | 154 | |
affef71b | 155 | TTree *th = pInStartLoader->TreeH(); |
ede9aff7 | 156 | brHits = th->GetBranch("START"); |
157 | if (brHits) { | |
e4da63c2 | 158 | fSTART->SetHitsAddressBranch(brHits); |
ede9aff7 | 159 | }else{ |
e4da63c2 | 160 | AliError("Branch START hit not found"); |
00907af4 | 161 | exit(111); |
ede9aff7 | 162 | } |
163 | Int_t ntracks = (Int_t) th->GetEntries(); | |
e4da63c2 | 164 | |
165 | if (ntracks<=0) return; | |
ede9aff7 | 166 | // Start loop on tracks in the hits containers |
167 | for (Int_t track=0; track<ntracks;track++) { | |
168 | brHits->GetEntry(track); | |
7a68e0ef | 169 | nhits = fHits->GetEntriesFast(); |
e4da63c2 | 170 | for (hit=0;hit<nhits;hit++) |
171 | { | |
172 | startHit = (AliSTARThit*) fHits->UncheckedAt(hit); | |
173 | if (!startHit) { | |
174 | AliError("The unchecked hit doesn't exist"); | |
175 | break; | |
176 | } | |
177 | pmt=startHit->Pmt(); | |
178 | Int_t numpmt=pmt-1; | |
179 | Float_t e=startHit->Etot(); | |
180 | volume = startHit->Volume(); | |
181 | if(RegisterPhotoE(e)) countE[numpmt]++; | |
182 | besttime[numpmt] = startHit->Time(); | |
183 | if(besttime[numpmt]<time[numpmt]) | |
e73d68f2 | 184 | { |
e4da63c2 | 185 | time[numpmt]=besttime[numpmt]; |
186 | } | |
187 | ||
188 | } //hits loop | |
ede9aff7 | 189 | } //track loop |
e4da63c2 | 190 | |
191 | //best time right&left | |
192 | for (Int_t ipmt=0; ipmt<12; ipmt++) | |
193 | { | |
194 | timeGaus[ipmt]=gRandom->Gaus(time[ipmt],0.025); | |
195 | if(timeGaus[ipmt]<besttimeleft) besttimeleft=timeGaus[ipmt]; //timeleft | |
196 | } | |
197 | for ( Int_t ipmt=12; ipmt<24; ipmt++) | |
198 | { | |
199 | timeGaus[ipmt]=gRandom->Gaus(time[ipmt],0.025); | |
200 | if(timeGaus[ipmt]<besttimeright) besttimeright=timeGaus[ipmt]; //timeright | |
201 | }// besttime | |
202 | ||
ede9aff7 | 203 | //folding with experimental time distribution |
e4da63c2 | 204 | Float_t c = 29.9792; // mm/ns |
205 | Float_t koef=(350.-69.7)/c; | |
206 | Float_t besttimeleftR= besttimeleft; | |
207 | besttimeleft=koef+besttimeleft; | |
208 | bestLeftTDC=Int_t (besttimeleftR*1000/channelWidth); | |
209 | bestRightTDC=Int_t (besttimeright*1000/channelWidth); | |
210 | timeDiff=(c*(besttimeright-besttimeleftR)-(350.-69.7))/(2*c); | |
211 | meanTime=(besttimeright+besttimeleftR)/2.; | |
212 | Float_t ds=(c*(besttimeright-besttimeleftR)-(350.-69.7))/2; | |
213 | AliDebug(2,Form(" timediff in ns %f z= %f real point%f",timeDiff,timeDiff*c,ds)); | |
214 | ||
215 | ||
216 | // Time to TDC signal | |
217 | Int_t iTimeAv=Int_t (meanTime*1000/channelWidth); | |
218 | // time channel numbres | |
219 | // fill digits | |
220 | fdigits->SetTimeBestLeft(bestLeftTDC); | |
221 | fdigits->SetTimeBestRight(bestRightTDC); | |
222 | fdigits->SetMeanTime(iTimeAv); | |
e73d68f2 | 223 | |
e4da63c2 | 224 | //ADC features |
225 | ||
226 | for (Int_t i=0; i<24; i++) | |
e73d68f2 | 227 | { |
e4da63c2 | 228 | |
229 | // fill TDC | |
230 | tr= Int_t (timeGaus[i]*1000/channelWidth); | |
231 | if(timeGaus[i]>100) tr=0; | |
232 | ftimeTDC->AddAt(tr,i); | |
e73d68f2 | 233 | |
e4da63c2 | 234 | //fill ADC |
235 | Int_t al= countE[i]; //1024 - channel width shoul be change | |
236 | fADC->AddAt(al,i); | |
237 | } //pmt loop | |
88cb7938 | 238 | |
e4da63c2 | 239 | fdigits->SetTime(*ftimeTDC); |
240 | fdigits->SetADC(*fADC); | |
241 | ||
affef71b | 242 | pInStartLoader->UnloadHits(); |
e4da63c2 | 243 | |
6fc133d2 | 244 | } //input streams loop |
e4da63c2 | 245 | |
6fc133d2 | 246 | pOutStartLoader->WriteDigits("OVERWRITE"); |
247 | pOutStartLoader->UnloadDigits(); | |
ede9aff7 | 248 | } |
249 | ||
250 | ||
e73d68f2 | 251 | //------------------------------------------------------------------------ |
e4da63c2 | 252 | Bool_t AliSTARTDigitizer::RegisterPhotoE(Float_t e) |
e73d68f2 | 253 | { |
e4da63c2 | 254 | |
255 | ||
256 | // Float_t hc=197.326960*1.e6; //mev*nm | |
257 | Float_t hc=1.973*1.e-6; //gev*nm | |
258 | Float_t lambda=hc/e; | |
174d209f | 259 | Int_t bin= fEff->GetXaxis()->FindBin(lambda); |
260 | Float_t eff=fEff->GetBinContent(bin); | |
e4da63c2 | 261 | Double_t p = gRandom->Rndm(); |
262 | if (p > eff) | |
263 | return kFALSE; | |
264 | ||
265 | return kTRUE; | |
e73d68f2 | 266 | } |
7a68e0ef | 267 | //---------------------------------------------------------------------------- |