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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); | |
ede9aff7 | 60 | } |
61 | ||
62 | //------------------------------------------------------------------------ | |
63 | AliSTARTDigitizer::~AliSTARTDigitizer() | |
64 | { | |
65 | // Destructor | |
e4da63c2 | 66 | |
67 | AliDebug(1,"START"); | |
68 | delete ftimeTDC; | |
69 | delete fADC; | |
ede9aff7 | 70 | } |
71 | ||
72 | //------------------------------------------------------------------------ | |
73 | Bool_t AliSTARTDigitizer::Init() | |
74 | { | |
75 | // Initialization | |
e4da63c2 | 76 | AliDebug(1," Init"); |
ede9aff7 | 77 | return kTRUE; |
78 | } | |
79 | ||
80 | ||
81 | //--------------------------------------------------------------------- | |
82 | ||
dc63cec5 | 83 | void AliSTARTDigitizer::Exec(Option_t* /*option*/) |
ede9aff7 | 84 | { |
85 | ||
affef71b | 86 | /* |
87 | Produde digits from hits | |
88 | digits is TObject and includes | |
89 | We are writing array if left & right TDC | |
90 | left & right ADC (will need for slow simulation) | |
91 | TOF first particle left & right | |
92 | mean time and time difference (vertex position) | |
93 | ||
94 | */ | |
88cb7938 | 95 | |
96 | AliRunLoader *inRL, *outRL;//in and out Run Loaders | |
affef71b | 97 | AliLoader *pInStartLoader, *pOutStartLoader;// in and out STARTLoaders |
88cb7938 | 98 | |
99 | outRL = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName()); | |
affef71b | 100 | pOutStartLoader = outRL->GetLoader("STARTLoader"); |
88cb7938 | 101 | |
e4da63c2 | 102 | AliDebug(1,"start..."); |
103 | ||
ede9aff7 | 104 | // |
105 | // From hits to digits | |
106 | // | |
e73d68f2 | 107 | Int_t hit, nhits; |
affef71b | 108 | Float_t meanTime; |
e4da63c2 | 109 | Int_t countE[24]; |
110 | Int_t volume,pmt,tr,sumRight; | |
111 | Int_t bestRightTDC,bestLeftTDC; | |
112 | Float_t time[24]={24*0}; | |
113 | Float_t besttime[24]={24*0}; | |
114 | Float_t timeGaus[37]={24*0}; | |
115 | Float_t channelWidth=25.; //ps | |
e73d68f2 | 116 | |
ede9aff7 | 117 | AliSTARThit *startHit; |
118 | TBranch *brHits=0; | |
e4da63c2 | 119 | |
6fc133d2 | 120 | pOutStartLoader->LoadDigits("UPDATE");//probably it is necessary to load them before |
ede9aff7 | 121 | fdigits= new AliSTARTdigit(); |
6fc133d2 | 122 | pOutStartLoader->GetDigitsDataLoader()->GetBaseLoader(0)->Post(fdigits); |
ede9aff7 | 123 | |
124 | Int_t nFiles=fManager->GetNinputs(); | |
125 | for (Int_t inputFile=0; inputFile<nFiles; inputFile++) { | |
6fc133d2 | 126 | if (inputFile < nFiles-1) { |
e4da63c2 | 127 | AliWarning(Form("ignoring input stream %d", inputFile)); |
6fc133d2 | 128 | continue; |
e4da63c2 | 129 | |
6fc133d2 | 130 | } |
e73d68f2 | 131 | |
affef71b | 132 | Float_t besttimeright=9999.; |
133 | Float_t besttimeleft=9999.; | |
e4da63c2 | 134 | Float_t timeDiff; |
e73d68f2 | 135 | sumRight=0; |
e4da63c2 | 136 | for (Int_t i0=0; i0<24; i0++) |
e73d68f2 | 137 | { |
e4da63c2 | 138 | time[i0]=9999; besttime[i0]=9999; countE[i0]=0; |
e73d68f2 | 139 | } |
88cb7938 | 140 | |
141 | inRL = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(inputFile)); | |
6fc133d2 | 142 | if (!inRL->GetAliRun()) inRL->LoadgAlice(); |
143 | AliSTART *fSTART = (AliSTART*) inRL->GetAliRun()->GetDetector("START"); | |
affef71b | 144 | pInStartLoader = inRL->GetLoader("STARTLoader"); |
145 | pInStartLoader->LoadHits("READ");//probably it is necessary to load them before | |
affef71b | 146 | TClonesArray *fHits = fSTART->Hits (); |
ede9aff7 | 147 | |
affef71b | 148 | TTree *th = pInStartLoader->TreeH(); |
ede9aff7 | 149 | brHits = th->GetBranch("START"); |
150 | if (brHits) { | |
e4da63c2 | 151 | fSTART->SetHitsAddressBranch(brHits); |
ede9aff7 | 152 | }else{ |
e4da63c2 | 153 | AliError("Branch START hit not found"); |
00907af4 | 154 | exit(111); |
ede9aff7 | 155 | } |
156 | Int_t ntracks = (Int_t) th->GetEntries(); | |
e4da63c2 | 157 | |
158 | if (ntracks<=0) return; | |
ede9aff7 | 159 | // Start loop on tracks in the hits containers |
160 | for (Int_t track=0; track<ntracks;track++) { | |
161 | brHits->GetEntry(track); | |
7a68e0ef | 162 | nhits = fHits->GetEntriesFast(); |
e4da63c2 | 163 | for (hit=0;hit<nhits;hit++) |
164 | { | |
165 | startHit = (AliSTARThit*) fHits->UncheckedAt(hit); | |
166 | if (!startHit) { | |
167 | AliError("The unchecked hit doesn't exist"); | |
168 | break; | |
169 | } | |
170 | pmt=startHit->Pmt(); | |
171 | Int_t numpmt=pmt-1; | |
172 | Float_t e=startHit->Etot(); | |
173 | volume = startHit->Volume(); | |
174 | if(RegisterPhotoE(e)) countE[numpmt]++; | |
175 | besttime[numpmt] = startHit->Time(); | |
176 | if(besttime[numpmt]<time[numpmt]) | |
e73d68f2 | 177 | { |
e4da63c2 | 178 | time[numpmt]=besttime[numpmt]; |
179 | } | |
180 | ||
181 | } //hits loop | |
ede9aff7 | 182 | } //track loop |
e4da63c2 | 183 | |
184 | //best time right&left | |
185 | for (Int_t ipmt=0; ipmt<12; ipmt++) | |
186 | { | |
187 | timeGaus[ipmt]=gRandom->Gaus(time[ipmt],0.025); | |
188 | if(timeGaus[ipmt]<besttimeleft) besttimeleft=timeGaus[ipmt]; //timeleft | |
189 | } | |
190 | for ( Int_t ipmt=12; ipmt<24; ipmt++) | |
191 | { | |
192 | timeGaus[ipmt]=gRandom->Gaus(time[ipmt],0.025); | |
193 | if(timeGaus[ipmt]<besttimeright) besttimeright=timeGaus[ipmt]; //timeright | |
194 | }// besttime | |
195 | ||
ede9aff7 | 196 | //folding with experimental time distribution |
e4da63c2 | 197 | Float_t c = 29.9792; // mm/ns |
198 | Float_t koef=(350.-69.7)/c; | |
199 | Float_t besttimeleftR= besttimeleft; | |
200 | besttimeleft=koef+besttimeleft; | |
201 | bestLeftTDC=Int_t (besttimeleftR*1000/channelWidth); | |
202 | bestRightTDC=Int_t (besttimeright*1000/channelWidth); | |
203 | timeDiff=(c*(besttimeright-besttimeleftR)-(350.-69.7))/(2*c); | |
204 | meanTime=(besttimeright+besttimeleftR)/2.; | |
205 | Float_t ds=(c*(besttimeright-besttimeleftR)-(350.-69.7))/2; | |
206 | AliDebug(2,Form(" timediff in ns %f z= %f real point%f",timeDiff,timeDiff*c,ds)); | |
207 | ||
208 | ||
209 | // Time to TDC signal | |
210 | Int_t iTimeAv=Int_t (meanTime*1000/channelWidth); | |
211 | // time channel numbres | |
212 | // fill digits | |
213 | fdigits->SetTimeBestLeft(bestLeftTDC); | |
214 | fdigits->SetTimeBestRight(bestRightTDC); | |
215 | fdigits->SetMeanTime(iTimeAv); | |
e73d68f2 | 216 | |
e4da63c2 | 217 | //ADC features |
218 | ||
219 | for (Int_t i=0; i<24; i++) | |
e73d68f2 | 220 | { |
e4da63c2 | 221 | |
222 | // fill TDC | |
223 | tr= Int_t (timeGaus[i]*1000/channelWidth); | |
224 | if(timeGaus[i]>100) tr=0; | |
225 | ftimeTDC->AddAt(tr,i); | |
e73d68f2 | 226 | |
e4da63c2 | 227 | //fill ADC |
228 | Int_t al= countE[i]; //1024 - channel width shoul be change | |
229 | fADC->AddAt(al,i); | |
230 | } //pmt loop | |
88cb7938 | 231 | |
e4da63c2 | 232 | fdigits->SetTime(*ftimeTDC); |
233 | fdigits->SetADC(*fADC); | |
234 | ||
affef71b | 235 | pInStartLoader->UnloadHits(); |
e4da63c2 | 236 | |
6fc133d2 | 237 | } //input streams loop |
e4da63c2 | 238 | |
6fc133d2 | 239 | pOutStartLoader->WriteDigits("OVERWRITE"); |
240 | pOutStartLoader->UnloadDigits(); | |
ede9aff7 | 241 | } |
242 | ||
243 | ||
e73d68f2 | 244 | //------------------------------------------------------------------------ |
e4da63c2 | 245 | Bool_t AliSTARTDigitizer::RegisterPhotoE(Float_t e) |
e73d68f2 | 246 | { |
e4da63c2 | 247 | |
248 | ||
249 | // Float_t hc=197.326960*1.e6; //mev*nm | |
250 | Float_t hc=1.973*1.e-6; //gev*nm | |
251 | Float_t lambda=hc/e; | |
252 | Char_t filename[80]; | |
253 | TH1F *hEff; | |
254 | Char_t *dirname=getenv("ALICE_ROOT"); | |
255 | sprintf(filename,"%s/START/PMTefficiency.root",dirname); | |
256 | TFile *file= new TFile(filename); | |
257 | file->cd(); | |
258 | hEff = (TH1F*)file->Get("hEff"); | |
259 | Int_t bin= hEff->GetXaxis()->FindBin(lambda); | |
260 | Float_t eff=hEff->GetBinContent(bin); | |
261 | file->Close(); | |
262 | Double_t p = gRandom->Rndm(); | |
263 | if (p > eff) | |
264 | return kFALSE; | |
265 | ||
266 | return kTRUE; | |
e73d68f2 | 267 | } |
7a68e0ef | 268 | //---------------------------------------------------------------------------- |