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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) | |
7a18b6a5 | 51 | :AliDigitizer(manager), |
52 | fSTART(0), | |
53 | fHits(0), | |
54 | fdigits(0), | |
55 | ftimeTDC(0), | |
56 | fADC(0), | |
db173afc | 57 | ftimeTDCAmp(0), |
58 | fADCAmp(0), | |
59 | fSumMult(0), | |
7a18b6a5 | 60 | fEff(0) |
ede9aff7 | 61 | { |
ede9aff7 | 62 | // ctor which should be used |
e4da63c2 | 63 | |
64 | AliDebug(1,"processed"); | |
65 | ||
7a18b6a5 | 66 | fSTART = 0; |
7a18b6a5 | 67 | fHits = 0; |
68 | fdigits = 0; | |
69 | ||
db173afc | 70 | ftimeTDC = new TArrayI(24); |
71 | fADC = new TArrayI(24); | |
72 | ftimeTDCAmp = new TArrayI(24); | |
73 | fADCAmp = new TArrayI(24); | |
74 | fSumMult = new TArrayI(6); | |
75 | ||
174d209f | 76 | |
77 | TFile* file = TFile::Open("$ALICE_ROOT/START/PMTefficiency.root"); | |
78 | fEff = (TH1F*) file->Get("hEff")->Clone(); | |
79 | fEff->SetDirectory(NULL); | |
80 | file->Close(); | |
81 | delete file; | |
ede9aff7 | 82 | } |
83 | ||
84 | //------------------------------------------------------------------------ | |
85 | AliSTARTDigitizer::~AliSTARTDigitizer() | |
86 | { | |
87 | // Destructor | |
e4da63c2 | 88 | |
7a18b6a5 | 89 | AliDebug(1,"START"); |
90 | ||
e4da63c2 | 91 | delete ftimeTDC; |
92 | delete fADC; | |
174d209f | 93 | delete fEff; |
db173afc | 94 | delete ftimeTDCAmp; |
95 | delete fADCAmp; | |
96 | delete fSumMult; | |
ede9aff7 | 97 | } |
98 | ||
99 | //------------------------------------------------------------------------ | |
100 | Bool_t AliSTARTDigitizer::Init() | |
101 | { | |
102 | // Initialization | |
e4da63c2 | 103 | AliDebug(1," Init"); |
ede9aff7 | 104 | return kTRUE; |
105 | } | |
106 | ||
107 | ||
108 | //--------------------------------------------------------------------- | |
109 | ||
dc63cec5 | 110 | void AliSTARTDigitizer::Exec(Option_t* /*option*/) |
ede9aff7 | 111 | { |
112 | ||
affef71b | 113 | /* |
114 | Produde digits from hits | |
115 | digits is TObject and includes | |
116 | We are writing array if left & right TDC | |
117 | left & right ADC (will need for slow simulation) | |
118 | TOF first particle left & right | |
119 | mean time and time difference (vertex position) | |
120 | ||
121 | */ | |
88cb7938 | 122 | |
db173afc | 123 | //output loader |
124 | AliRunLoader *outRL = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName()); | |
125 | AliLoader * pOutStartLoader = outRL->GetLoader("STARTLoader"); | |
88cb7938 | 126 | |
e4da63c2 | 127 | AliDebug(1,"start..."); |
db173afc | 128 | //input loader |
ede9aff7 | 129 | // |
130 | // From hits to digits | |
131 | // | |
e73d68f2 | 132 | Int_t hit, nhits; |
db173afc | 133 | Int_t countE[24], sumMult[3]; |
134 | Int_t volume,pmt,tr,qt,qtAmp; | |
e4da63c2 | 135 | Int_t bestRightTDC,bestLeftTDC; |
db173afc | 136 | Float_t time[24],besttime[24], timeGaus[24] ; |
e4da63c2 | 137 | Float_t channelWidth=25.; //ps |
db173afc | 138 | //Q->T-> coefficients !!!! should be asked!!! |
139 | Float_t ph2mV = 150./500.; | |
140 | Int_t threshold =50; //photoelectrons | |
141 | Int_t mV2channel=200000/(25*25); //5V -> 200ns | |
142 | ||
e73d68f2 | 143 | |
ede9aff7 | 144 | AliSTARThit *startHit; |
145 | TBranch *brHits=0; | |
e4da63c2 | 146 | |
ede9aff7 | 147 | Int_t nFiles=fManager->GetNinputs(); |
148 | for (Int_t inputFile=0; inputFile<nFiles; inputFile++) { | |
6fc133d2 | 149 | if (inputFile < nFiles-1) { |
e4da63c2 | 150 | AliWarning(Form("ignoring input stream %d", inputFile)); |
6fc133d2 | 151 | continue; |
db173afc | 152 | |
6fc133d2 | 153 | } |
db173afc | 154 | |
155 | Float_t besttimeright=99999.; | |
156 | Float_t besttimeleft=99999.; | |
157 | Int_t timeDiff, meanTime; | |
158 | ||
159 | for (Int_t i0=0; i0<24; i0++) | |
e73d68f2 | 160 | { |
40d2047f | 161 | time[i0]=besttime[i0]=timeGaus[i0]=99999; countE[i0]=0; |
e73d68f2 | 162 | } |
db173afc | 163 | for ( Int_t imu=0; imu<3; imu++) sumMult[imu]=0; |
164 | AliRunLoader * inRL = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(inputFile)); | |
165 | AliLoader * pInStartLoader = inRL->GetLoader("STARTLoader"); | |
6fc133d2 | 166 | if (!inRL->GetAliRun()) inRL->LoadgAlice(); |
985b3149 | 167 | AliSTART *fSTART = (AliSTART*)inRL ->GetAliRun()->GetDetector("START"); |
db173afc | 168 | |
169 | //read Hits | |
affef71b | 170 | pInStartLoader->LoadHits("READ");//probably it is necessary to load them before |
affef71b | 171 | TClonesArray *fHits = fSTART->Hits (); |
affef71b | 172 | TTree *th = pInStartLoader->TreeH(); |
ede9aff7 | 173 | brHits = th->GetBranch("START"); |
174 | if (brHits) { | |
e4da63c2 | 175 | fSTART->SetHitsAddressBranch(brHits); |
ede9aff7 | 176 | }else{ |
db173afc | 177 | AliError("Branch START hit not found"); |
00907af4 | 178 | exit(111); |
ede9aff7 | 179 | } |
180 | Int_t ntracks = (Int_t) th->GetEntries(); | |
db173afc | 181 | |
e4da63c2 | 182 | if (ntracks<=0) return; |
ede9aff7 | 183 | // Start loop on tracks in the hits containers |
184 | for (Int_t track=0; track<ntracks;track++) { | |
185 | brHits->GetEntry(track); | |
7a68e0ef | 186 | nhits = fHits->GetEntriesFast(); |
db173afc | 187 | for (hit=0;hit<nhits;hit++) |
e4da63c2 | 188 | { |
189 | startHit = (AliSTARThit*) fHits->UncheckedAt(hit); | |
190 | if (!startHit) { | |
191 | AliError("The unchecked hit doesn't exist"); | |
192 | break; | |
193 | } | |
194 | pmt=startHit->Pmt(); | |
195 | Int_t numpmt=pmt-1; | |
db173afc | 196 | Double_t e=startHit->Etot(); |
e4da63c2 | 197 | volume = startHit->Volume(); |
e4da63c2 | 198 | |
db173afc | 199 | if(e>0 && RegisterPhotoE(e)) { |
200 | countE[numpmt]++; | |
201 | besttime[numpmt] = startHit->Time(); | |
202 | if(besttime[numpmt]<time[numpmt]) | |
203 | { | |
204 | time[numpmt]=besttime[numpmt]; | |
205 | } | |
206 | } | |
e4da63c2 | 207 | } //hits loop |
ede9aff7 | 208 | } //track loop |
e4da63c2 | 209 | |
db173afc | 210 | //spread time right&left by 25ps && besttime |
211 | for (Int_t ipmt=0; ipmt<12; ipmt++){ | |
212 | if(countE[ipmt] > threshold) { | |
213 | timeGaus[ipmt]=gRandom->Gaus(time[ipmt],25); | |
e4da63c2 | 214 | if(timeGaus[ipmt]<besttimeleft) besttimeleft=timeGaus[ipmt]; //timeleft |
db173afc | 215 | sumMult[0] += countE[ipmt]; |
216 | sumMult[1] += countE[ipmt]; | |
e4da63c2 | 217 | } |
db173afc | 218 | } |
219 | for ( Int_t ipmt=12; ipmt<24; ipmt++){ | |
220 | if(countE[ipmt] > threshold) { | |
221 | timeGaus[ipmt]=gRandom->Gaus(time[ipmt],25); | |
e4da63c2 | 222 | if(timeGaus[ipmt]<besttimeright) besttimeright=timeGaus[ipmt]; //timeright |
db173afc | 223 | sumMult[0] += countE[ipmt]; |
224 | sumMult[2] += countE[ipmt]; | |
225 | } | |
226 | } | |
227 | //ADC features fill digits | |
228 | //folding with experimental time distribution | |
229 | Float_t c = 0.0299792; // cm/ps | |
e4da63c2 | 230 | Float_t koef=(350.-69.7)/c; |
231 | Float_t besttimeleftR= besttimeleft; | |
232 | besttimeleft=koef+besttimeleft; | |
db173afc | 233 | bestLeftTDC=Int_t (besttimeleftR/channelWidth); |
234 | bestRightTDC=Int_t (besttimeright/channelWidth); | |
235 | timeDiff=Int_t ((besttimeright-besttimeleftR)/channelWidth); | |
236 | meanTime=Int_t (((besttimeright+besttimeleft)/2.)/channelWidth); | |
237 | AliDebug(2,Form(" time in ns %f ", besttimeleft)); | |
238 | for (Int_t i=0; i<24; i++) | |
e73d68f2 | 239 | { |
e4da63c2 | 240 | // fill TDC |
db173afc | 241 | tr= Int_t (timeGaus[i]/channelWidth); |
242 | if(timeGaus[i]>50000) tr=0; | |
e73d68f2 | 243 | |
e4da63c2 | 244 | //fill ADC |
db173afc | 245 | Int_t al= countE[i]; |
246 | // QTC procedure: | |
247 | // phe -> mV 0.3; 1MIP ->500phe -> ln (amp (mV)) = 5; | |
248 | // max 200ns, HIJING mean 50000phe -> 15000mv -> ln = 15 (s zapasom) | |
249 | // channel 25ps | |
250 | if (al>threshold) { | |
251 | qt=Int_t (TMath::Log(al*ph2mV) * mV2channel); | |
252 | qtAmp=Int_t (TMath::Log(al*10*ph2mV) * mV2channel); | |
db173afc | 253 | fADC->AddAt(qt,i); |
254 | ftimeTDC->AddAt(tr,i); | |
255 | fADCAmp->AddAt(qtAmp,i); | |
256 | ftimeTDCAmp->AddAt(tr,i); //now is the same as non-amplified but will be change | |
257 | } | |
e4da63c2 | 258 | } //pmt loop |
db173afc | 259 | for (Int_t im=0; im<3; im++) |
260 | { | |
261 | if (sumMult[im]>threshold){ | |
262 | Int_t sum=Int_t (TMath::Log(sumMult[im]*ph2mV) * mV2channel); | |
263 | Int_t sumAmp=Int_t (TMath::Log(10*sumMult[im]*ph2mV) * mV2channel); | |
264 | fSumMult->AddAt(sum,im); | |
265 | fSumMult->AddAt(sumAmp,im+3); | |
266 | } | |
267 | } | |
268 | ||
269 | fSTART->AddDigit(bestRightTDC,bestLeftTDC,meanTime,timeDiff,fSumMult, | |
270 | ftimeTDC,fADC,ftimeTDCAmp,fADCAmp); | |
271 | pOutStartLoader->UnloadHits(); | |
6fc133d2 | 272 | } //input streams loop |
db173afc | 273 | |
274 | //load digits | |
275 | pOutStartLoader->LoadDigits("UPDATE"); | |
276 | TTree *treeD = pOutStartLoader->TreeD(); | |
277 | if (treeD == 0x0) { | |
278 | pOutStartLoader->MakeTree("D"); | |
279 | treeD = pOutStartLoader->TreeD(); | |
280 | } | |
985b3149 | 281 | AliSTART *fSTART = (AliSTART*)outRL ->GetAliRun()->GetDetector("START"); |
db173afc | 282 | fSTART->MakeBranch("D"); |
283 | treeD->Reset(); | |
284 | treeD->Fill(); | |
285 | ||
6fc133d2 | 286 | pOutStartLoader->WriteDigits("OVERWRITE"); |
db173afc | 287 | |
288 | fSTART->ResetDigits(); | |
6fc133d2 | 289 | pOutStartLoader->UnloadDigits(); |
db173afc | 290 | |
ede9aff7 | 291 | } |
292 | ||
293 | ||
e73d68f2 | 294 | //------------------------------------------------------------------------ |
2303c85c | 295 | Bool_t AliSTARTDigitizer::RegisterPhotoE(Double_t energy) |
e73d68f2 | 296 | { |
e4da63c2 | 297 | |
298 | ||
299 | // Float_t hc=197.326960*1.e6; //mev*nm | |
2303c85c | 300 | Double_t hc=1.973*1.e-6; //gev*nm |
2303c85c | 301 | Float_t lambda=hc/energy; |
174d209f | 302 | Int_t bin= fEff->GetXaxis()->FindBin(lambda); |
303 | Float_t eff=fEff->GetBinContent(bin); | |
e4da63c2 | 304 | Double_t p = gRandom->Rndm(); |
305 | if (p > eff) | |
306 | return kFALSE; | |
307 | ||
308 | return kTRUE; | |
e73d68f2 | 309 | } |
7a68e0ef | 310 | //---------------------------------------------------------------------------- |