new digitization and reconstruction corresponded to new data format
[u/mrichter/AliRoot.git] / START / AliSTARTDigitizer.cxx
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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>
c848a65b 25#include <TGraph.h>
ede9aff7 26
e4da63c2 27#include "AliLog.h"
ede9aff7 28#include "AliSTARTDigitizer.h"
29#include "AliSTART.h"
30#include "AliSTARThit.h"
31#include "AliSTARTdigit.h"
32#include "AliRunDigitizer.h"
affef71b 33#include <AliDetector.h>
ede9aff7 34#include "AliRun.h"
affef71b 35#include <AliLoader.h>
36#include <AliRunLoader.h>
ede9aff7 37#include <stdlib.h>
ef0750c2 38#include <Riostream.h>
39#include <Riostream.h>
c848a65b 40#include "AliSTARTParameters.h"
41#include "AliCDBLocal.h"
42#include "AliCDBStorage.h"
43#include "AliCDBManager.h"
44#include "AliCDBEntry.h"
ede9aff7 45
46ClassImp(AliSTARTDigitizer)
47
48//___________________________________________
49 AliSTARTDigitizer::AliSTARTDigitizer() :AliDigitizer()
50{
51// Default ctor - don't use it
52 ;
53}
54
55//___________________________________________
56AliSTARTDigitizer::AliSTARTDigitizer(AliRunDigitizer* manager)
7a18b6a5 57 :AliDigitizer(manager),
58 fSTART(0),
59 fHits(0),
60 fdigits(0),
c848a65b 61 ftimeCFD(0),
62 ftimeLED(0),
7a18b6a5 63 fADC(0),
c848a65b 64 fADC0(0)
ede9aff7 65{
ede9aff7 66// ctor which should be used
e4da63c2 67
68 AliDebug(1,"processed");
69
7a18b6a5 70 fSTART = 0;
7a18b6a5 71 fHits = 0;
72 fdigits = 0;
73
c848a65b 74 ftimeCFD = new TArrayI(24);
db173afc 75 fADC = new TArrayI(24);
c848a65b 76 ftimeLED = new TArrayI(24);
77 fADC0 = new TArrayI(24);
db173afc 78
174d209f 79
ede9aff7 80}
81
82//------------------------------------------------------------------------
83AliSTARTDigitizer::~AliSTARTDigitizer()
84{
85// Destructor
e4da63c2 86
7a18b6a5 87 AliDebug(1,"START");
88
c848a65b 89 delete ftimeCFD;
e4da63c2 90 delete fADC;
c848a65b 91 delete ftimeLED;
92 delete fADC0;
ede9aff7 93}
94
95 //------------------------------------------------------------------------
96Bool_t AliSTARTDigitizer::Init()
97{
98// Initialization
e4da63c2 99 AliDebug(1," Init");
ede9aff7 100 return kTRUE;
101}
102
103
104//---------------------------------------------------------------------
105
dc63cec5 106void AliSTARTDigitizer::Exec(Option_t* /*option*/)
ede9aff7 107{
108
affef71b 109 /*
110 Produde digits from hits
111 digits is TObject and includes
112 We are writing array if left & right TDC
113 left & right ADC (will need for slow simulation)
114 TOF first particle left & right
115 mean time and time difference (vertex position)
116
117 */
88cb7938 118
db173afc 119 //output loader
120 AliRunLoader *outRL = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
121 AliLoader * pOutStartLoader = outRL->GetLoader("STARTLoader");
88cb7938 122
e4da63c2 123 AliDebug(1,"start...");
db173afc 124 //input loader
ede9aff7 125 //
126 // From hits to digits
127 //
c848a65b 128 Int_t hit, nhits;
129 Int_t countE[24];
130 Int_t volume, pmt, trCFD, trLED;
131 Float_t sl, qt;
132 Int_t bestRightTDC, bestLeftTDC;
133 Float_t time[24], besttime[24], timeGaus[24] ;
134 // Float_t channelWidth=25.; //ps
db173afc 135 //Q->T-> coefficients !!!! should be asked!!!
c848a65b 136 Float_t gain[24],timeDelayCFD[24], timeDelayLED[24];
db173afc 137 Int_t threshold =50; //photoelectrons
c848a65b 138 Int_t qtThreshold=13, qtCh;
139 Float_t zdetA, zdetC;
140 TObjArray slewingLED;
141 AliSTARTParameters* param = AliSTARTParameters::Instance();
142 Int_t ph2Mip = param->GetPh2Mip();
143 Int_t channelWidth = param->GetChannelWidth() ;
144
145 param->Init();
146 for (Int_t i=0; i<24; i++){
147 timeDelayCFD[i] = param->GetTimeDelayCFD(i);
148 timeDelayLED[i] = param->GetTimeDelayLED(i);
149 gain[i] = param->GetGain(i);
150 TGraph* gr = param ->GetSlew(i);
151 slewingLED.AddAtAndExpand(gr,i);
152 TGraph* grEff = param ->GetPMTeff(i);
153 fEffPMT.AddAtAndExpand(grEff,i);
154 }
155 zdetC = param->GetZposition(0);
156 zdetA = param->GetZposition(1);
e73d68f2 157
ede9aff7 158 AliSTARThit *startHit;
159 TBranch *brHits=0;
c848a65b 160
ede9aff7 161 Int_t nFiles=fManager->GetNinputs();
162 for (Int_t inputFile=0; inputFile<nFiles; inputFile++) {
6fc133d2 163 if (inputFile < nFiles-1) {
c848a65b 164 AliWarning(Form("ignoring input stream %d", inputFile));
165 continue;
166
6fc133d2 167 }
db173afc 168
169 Float_t besttimeright=99999.;
170 Float_t besttimeleft=99999.;
c848a65b 171 Int_t pmtBestRight=9999;
172 Int_t pmtBestLeft=9999;
173 Int_t timeDiff=99999, meanTime=0;
174 Int_t sumMult =0;
175 ftimeCFD -> Reset();
176 fADC -> Reset();
177 fADC0 -> Reset();
178 ftimeLED ->Reset();
179 cout<<" before reading event "<<endl;
db173afc 180 for (Int_t i0=0; i0<24; i0++)
e73d68f2 181 {
40d2047f 182 time[i0]=besttime[i0]=timeGaus[i0]=99999; countE[i0]=0;
e73d68f2 183 }
db173afc 184 AliRunLoader * inRL = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(inputFile));
185 AliLoader * pInStartLoader = inRL->GetLoader("STARTLoader");
6fc133d2 186 if (!inRL->GetAliRun()) inRL->LoadgAlice();
985b3149 187 AliSTART *fSTART = (AliSTART*)inRL ->GetAliRun()->GetDetector("START");
db173afc 188
189 //read Hits
affef71b 190 pInStartLoader->LoadHits("READ");//probably it is necessary to load them before
affef71b 191 TClonesArray *fHits = fSTART->Hits ();
affef71b 192 TTree *th = pInStartLoader->TreeH();
ede9aff7 193 brHits = th->GetBranch("START");
194 if (brHits) {
e4da63c2 195 fSTART->SetHitsAddressBranch(brHits);
ede9aff7 196 }else{
db173afc 197 AliError("Branch START hit not found");
00907af4 198 exit(111);
ede9aff7 199 }
200 Int_t ntracks = (Int_t) th->GetEntries();
db173afc 201
e4da63c2 202 if (ntracks<=0) return;
ede9aff7 203 // Start loop on tracks in the hits containers
204 for (Int_t track=0; track<ntracks;track++) {
205 brHits->GetEntry(track);
7a68e0ef 206 nhits = fHits->GetEntriesFast();
db173afc 207 for (hit=0;hit<nhits;hit++)
e4da63c2 208 {
209 startHit = (AliSTARThit*) fHits->UncheckedAt(hit);
210 if (!startHit) {
211 AliError("The unchecked hit doesn't exist");
212 break;
213 }
214 pmt=startHit->Pmt();
215 Int_t numpmt=pmt-1;
db173afc 216 Double_t e=startHit->Etot();
e4da63c2 217 volume = startHit->Volume();
e4da63c2 218
c848a65b 219 if(e>0 && RegisterPhotoE(numpmt,e)) {
db173afc 220 countE[numpmt]++;
221 besttime[numpmt] = startHit->Time();
222 if(besttime[numpmt]<time[numpmt])
223 {
224 time[numpmt]=besttime[numpmt];
225 }
c848a65b 226 } //photoelectron accept
e4da63c2 227 } //hits loop
ede9aff7 228 } //track loop
c848a65b 229 cout<<" hits was read "<<endl;
e4da63c2 230
db173afc 231 //spread time right&left by 25ps && besttime
c848a65b 232 Float_t c = 0.0299792; // cm/ps
233
234 Float_t koef=(zdetA-zdetC)/c; //correction position difference by cable
db173afc 235 for (Int_t ipmt=0; ipmt<12; ipmt++){
236 if(countE[ipmt] > threshold) {
c848a65b 237 timeGaus[ipmt]=gRandom->Gaus(time[ipmt],25)+koef;
238 if(timeGaus[ipmt]<besttimeleft){
239 besttimeleft=timeGaus[ipmt]; //timeleft
240 pmtBestLeft=ipmt;}
e4da63c2 241 }
db173afc 242 }
c848a65b 243 cout<<"left "<<besttimeleft<<" "<<pmtBestLeft<<" koef "<<koef<<endl;
db173afc 244 for ( Int_t ipmt=12; ipmt<24; ipmt++){
245 if(countE[ipmt] > threshold) {
246 timeGaus[ipmt]=gRandom->Gaus(time[ipmt],25);
c848a65b 247 if(timeGaus[ipmt]<besttimeright) {
248 besttimeright=timeGaus[ipmt]; //timeright
249 pmtBestRight=ipmt;}
db173afc 250 }
251 }
c848a65b 252 cout<<"right"<<besttimeright<<" "<<pmtBestRight<<endl;
253
254 //folding with alignmentz position distribution
255
256 // Float_t koef=(zdetA-zdetC)/c;
257 // Float_t besttimeleftR= besttimeleft;
258 // besttimeleft=koef+besttimeleft;
259 cout<<" besttimeleft "<< besttimeleft<<" delay "<< timeDelayCFD[pmtBestLeft]<<" channelWidth "<<channelWidth<<endl;
260 bestLeftTDC=Int_t ((besttimeleft+1000*timeDelayCFD[pmtBestLeft])
261 /channelWidth);
262 cout<<" bestLeftTDC "<<bestLeftTDC<<" delay "<<timeDelayCFD[pmtBestLeft]<<endl;
263 bestRightTDC=Int_t ((besttimeright+1000*timeDelayCFD[pmtBestLeft])
264 /channelWidth);
265 timeDiff=Int_t (((besttimeleft+1000*timeDelayCFD[pmtBestLeft])-
266 (besttimeright+1000*timeDelayCFD[pmtBestLeft])
267 )/channelWidth);
268 meanTime=Int_t (((besttimeright+1000*timeDelayCFD[pmtBestLeft]+
269 besttimeleft+1000*timeDelayCFD[pmtBestLeft])/2.)
270 /channelWidth);
271 cout<<"bestLeftTDC"<<bestLeftTDC<<" bestRightTDC "<< bestRightTDC<<
272 " timeDiff "<<timeDiff<<" meanTime= "<<meanTime<<endl;
db173afc 273 AliDebug(2,Form(" time in ns %f ", besttimeleft));
274 for (Int_t i=0; i<24; i++)
e73d68f2 275 {
c848a65b 276 Float_t al = countE[i];
277 if (al>threshold && timeGaus[i]<50000 ) {
e4da63c2 278 //fill ADC
db173afc 279 // QTC procedure:
280 // phe -> mV 0.3; 1MIP ->500phe -> ln (amp (mV)) = 5;
281 // max 200ns, HIJING mean 50000phe -> 15000mv -> ln = 15 (s zapasom)
282 // channel 25ps
c848a65b 283 qt= 50.*al*gain[i]/ph2Mip; // 50mv/Mip amp in mV
284 // fill TDC
285 trCFD = Int_t (timeGaus[i] + 1000.*timeDelayCFD[i])/channelWidth;
286 trLED= Int_t (timeGaus[i] + 1000.*timeDelayLED[i]);
287 sl = ((TGraph*)slewingLED.At(i))->Eval(qt);
288 trLED = Int_t(( trLED + 1000*sl )/channelWidth);
289 qtCh=Int_t (1000.*TMath::Log(qt)) / channelWidth;
290 fADC0->AddAt(0,i);
291 fADC->AddAt(qtCh,i);
292 ftimeCFD->AddAt(Int_t (trCFD),i);
293 ftimeLED->AddAt(trLED,i);
294 sumMult += Int_t ((al*gain[i]/ph2Mip)*50) ;
295 cout<<al<<" "<<qt<<" trCFD "<<trCFD<<" sl "<<sl<<" trLED "<<trLED<<
296 " qtThreshold "<<qtThreshold<<" qtCh "<< qtCh<<endl;
db173afc 297 }
e4da63c2 298 } //pmt loop
db173afc 299
c848a65b 300 if (sumMult > threshold){
301 fSumMult = Int_t (TMath::Log(sumMult));
302 }
db173afc 303 fSTART->AddDigit(bestRightTDC,bestLeftTDC,meanTime,timeDiff,fSumMult,
c848a65b 304 ftimeCFD,fADC,ftimeLED,fADC0);
db173afc 305 pOutStartLoader->UnloadHits();
6fc133d2 306 } //input streams loop
db173afc 307
308 //load digits
309 pOutStartLoader->LoadDigits("UPDATE");
310 TTree *treeD = pOutStartLoader->TreeD();
311 if (treeD == 0x0) {
312 pOutStartLoader->MakeTree("D");
313 treeD = pOutStartLoader->TreeD();
314 }
c848a65b 315 treeD->Reset();
316 fSTART = (AliSTART*)outRL ->GetAliRun()->GetDetector("START");
317 // Make a branch in the tree
db173afc 318 fSTART->MakeBranch("D");
c848a65b 319 // treeD->Print();
db173afc 320 treeD->Fill();
c848a65b 321 cout<<" treeD->Fill(); "<<endl;
db173afc 322
c848a65b 323 pOutStartLoader->WriteDigits("OVERWRITE");
324
325 cout<<" pOutStartLoader->WriteDigits "<<endl;
326 fSTART->ResetDigits();
327 pOutStartLoader->UnloadDigits();
328
ede9aff7 329}
330
331
e73d68f2 332//------------------------------------------------------------------------
c848a65b 333Bool_t AliSTARTDigitizer::RegisterPhotoE(Int_t ipmt,Double_t energy)
e73d68f2 334{
e4da63c2 335
336
337 // Float_t hc=197.326960*1.e6; //mev*nm
2303c85c 338 Double_t hc=1.973*1.e-6; //gev*nm
2303c85c 339 Float_t lambda=hc/energy;
c848a65b 340 Float_t eff = ((TGraph*) fEffPMT.At(ipmt))->Eval(lambda);
e4da63c2 341 Double_t p = gRandom->Rndm();
c848a65b 342
e4da63c2 343 if (p > eff)
344 return kFALSE;
345
346 return kTRUE;
e73d68f2 347}
c848a65b 348
7a68e0ef 349//----------------------------------------------------------------------------