1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
17 /*********************************************************************
18 * T0 reconstruction and filling ESD
19 * - reconstruct mean time (interation time)
22 ********************************************************************/
24 #include <AliESDEvent.h>
26 #include "AliT0RecPoint.h"
27 #include "AliRawReader.h"
28 #include "AliT0RawReader.h"
29 #include "AliT0digit.h"
30 #include "AliT0Reconstructor.h"
31 #include "AliT0Parameters.h"
32 #include "AliT0Calibrator.h"
38 ClassImp(AliT0Reconstructor)
40 AliT0Reconstructor:: AliT0Reconstructor(): AliReconstructor(),
49 AliDebug(1,"Start reconstructor ");
51 fParam = AliT0Parameters::Instance();
53 for (Int_t i=0; i<24; i++){
54 TGraph* gr = fParam ->GetAmpLEDRec(i);
55 fAmpLEDrec.AddAtAndExpand(gr,i) ;
56 // fTime0vertex[i]= fParam->GetTimeV0(i);
58 fdZonC = TMath::Abs(fParam->GetZPositionShift("T0/C/PMT1"));
59 fdZonA = TMath::Abs(fParam->GetZPositionShift("T0/A/PMT15"));
62 //____________________________________________________________________
64 AliT0Reconstructor::AliT0Reconstructor(const AliT0Reconstructor &r):
73 // AliT0Reconstructor copy constructor
76 ((AliT0Reconstructor &) r).Copy(*this);
80 //_____________________________________________________________________________
81 AliT0Reconstructor &AliT0Reconstructor::operator=(const AliT0Reconstructor &r)
84 // Assignment operator
87 if (this != &r) ((AliT0Reconstructor &) r).Copy(*this);
92 //_____________________________________________________________________________
94 void AliT0Reconstructor::Reconstruct(TTree*digitsTree, TTree*clustersTree) const
97 // T0 digits reconstruction
101 TArrayI * timeCFD = new TArrayI(24);
102 TArrayI * timeLED = new TArrayI(24);
103 TArrayI * chargeQT0 = new TArrayI(24);
104 TArrayI * chargeQT1 = new TArrayI(24);
106 AliT0Calibrator *calib=new AliT0Calibrator();
108 // Int_t mV2Mip = param->GetmV2Mip();
109 //mV2Mip = param->GetmV2Mip();
110 Float_t channelWidth = fParam->GetChannelWidth() ;
111 Int_t meanT0 = fParam->GetMeanT0();
113 AliDebug(1,Form("Start DIGITS reconstruction "));
115 TBranch *brDigits=digitsTree->GetBranch("T0");
116 AliT0digit *fDigits = new AliT0digit() ;
118 brDigits->SetAddress(&fDigits);
120 AliError(Form("EXEC Branch T0 digits not found"));
124 digitsTree->GetEvent(0);
125 digitsTree->GetEntry(0);
126 brDigits->GetEntry(0);
127 fDigits->GetTimeCFD(*timeCFD);
128 fDigits->GetTimeLED(*timeLED);
129 fDigits->GetQT0(*chargeQT0);
130 fDigits->GetQT1(*chargeQT1);
133 Float_t besttimeA=999999;
134 Float_t besttimeC=999999;
135 Int_t pmtBestA=99999;
136 Int_t pmtBestC=99999;
137 Float_t timeDiff=999999, meanTime=0;
141 AliT0RecPoint* frecpoints= new AliT0RecPoint ();
142 clustersTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
144 Float_t time[24], adc[24];
145 for (Int_t ipmt=0; ipmt<24; ipmt++) {
146 if(timeCFD->At(ipmt)>0 ){
147 Double_t qt0 = Double_t(chargeQT0->At(ipmt));
148 Double_t qt1 = Double_t(chargeQT1->At(ipmt));
149 if((qt1-qt0)>0) adc[ipmt] = TMath::Exp( Double_t (channelWidth*(qt1-qt0)/1000));
150 time[ipmt] = calib-> WalkCorrection( ipmt,Int_t(qt1) , timeCFD->At(ipmt), "pdc" ) ;
153 Double_t sl = (timeLED->At(ipmt) - time[ipmt])*channelWidth;
154 Double_t qt=((TGraph*)fAmpLEDrec.At(ipmt))->Eval(sl/1000.);
155 frecpoints->SetTime(ipmt,time[ipmt]);
156 frecpoints->SetAmp(ipmt,adc[ipmt]);
157 frecpoints->SetAmpLED(ipmt,qt);
165 for (Int_t ipmt=0; ipmt<12; ipmt++){
166 if(time[ipmt] > 1 ) {
167 if(time[ipmt]<besttimeC){
168 besttimeC=time[ipmt]; //timeC
173 for ( Int_t ipmt=12; ipmt<24; ipmt++){
175 if(time[ipmt]<besttimeA) {
176 besttimeA=time[ipmt]; //timeA
180 if(besttimeA !=999999) frecpoints->SetTimeBestA(Int_t(besttimeA));
181 if( besttimeC != 999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
182 AliDebug(1,Form(" besttimeA %f ps, besttimeC %f ps",besttimeA, besttimeC));
183 Float_t c = 0.0299792; // cm/ps
185 if(besttimeA !=999999 && besttimeC != 999999 ){
186 timeDiff =(besttimeC - besttimeA)*channelWidth;
187 meanTime = (meanT0 - (besttimeA + besttimeC)/2) * channelWidth;
188 vertex = c*(timeDiff)/2. + (fdZonA - fdZonC)/2; //-(lenr-lenl))/2;
189 AliDebug(1,Form(" timeDiff %f ps, meanTime %f ps, vertex %f cm",timeDiff, meanTime,vertex ));
190 frecpoints->SetVertex(vertex);
191 frecpoints->SetMeanTime(Int_t(meanTime));
194 //time in each channel as time[ipmt]-MeanTimeinThisChannel(with vertex=0)
195 for (Int_t ipmt=0; ipmt<24; ipmt++) {
197 // time[ipmt] = (time[ipmt] - fTime0vertex[ipmt])*channelWidth;
198 time[ipmt] = time[ipmt] * channelWidth;
199 frecpoints->SetTime(ipmt,time[ipmt]);
202 clustersTree->Fill();
211 //_______________________________________________________________________
213 void AliT0Reconstructor::Reconstruct(AliRawReader* rawReader, TTree*recTree) const
216 // T0RecPoint writing
218 //Q->T-> coefficients !!!! should be measured!!!
219 Int_t allData[110][50];
221 TArrayI * timeCFD = new TArrayI(24);
222 TArrayI * timeLED = new TArrayI(24);
223 TArrayI * chargeQT0 = new TArrayI(24);
224 TArrayI * chargeQT1 = new TArrayI(24);
226 TString option = GetOption();
227 AliDebug(1,Form("Option: %s\n", option.Data()));
229 for (Int_t i0=0; i0<105; i0++)
231 for (Int_t j0=0; j0<50; j0++) allData[i0][j0]=0;
235 AliDebug(10," before read data ");
236 AliT0RawReader myrawreader(rawReader);
237 if (!myrawreader.Next())
238 AliDebug(1,Form(" no raw data found!! %i", myrawreader.Next()));
240 for (Int_t i=0; i<105; i++) {
241 for (Int_t iHit=0; iHit<50; iHit++)
243 allData[i][iHit] = myrawreader.GetData(i,iHit);
246 AliT0Calibrator *calib = new AliT0Calibrator();
248 // Int_t mV2Mip = param->GetmV2Mip();
249 //mV2Mip = param->GetmV2Mip();
250 Float_t channelWidth = fParam->GetChannelWidth() ;
252 Int_t meanT0 = fParam->GetMeanT0();
254 for (Int_t in=0; in<24; in++)
256 timeLED->AddAt(allData[in+1][0],in);
257 timeCFD->AddAt(allData[in+25][0],in);
258 chargeQT1->AddAt(allData[in+57][0],in);
259 chargeQT0->AddAt(allData[in+80][0],in);
260 AliDebug(10, Form(" readed Raw %i %i %i %i %i", in, timeLED->At(in),timeCFD->At(in),chargeQT0->At(in),chargeQT1->At(in)));
263 Float_t besttimeA=9999999;
264 Float_t besttimeC=9999999;
265 Int_t pmtBestA=99999;
266 Int_t pmtBestC=99999;
267 Float_t timeDiff=9999999, meanTime=0;
270 AliT0RecPoint* frecpoints= new AliT0RecPoint ();
272 recTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
275 Float_t time[24], adc[24];
276 for (Int_t ipmt=0; ipmt<24; ipmt++) {
277 if(timeCFD->At(ipmt)>0 ){
280 Double_t qt0 = Double_t(chargeQT0->At(ipmt));
281 Double_t qt1 = Double_t(chargeQT1->At(ipmt));
282 if((qt1-qt0)>0) adc[ipmt] = TMath::Exp( Double_t (channelWidth*(qt1-qt0)/1000));
283 // time[ipmt] = channelWidth * (calib-> WalkCorrection( ipmt,qt1 , timeCFD->At(ipmt) ) ) ;
284 time[ipmt] = calib-> WalkCorrection( ipmt,Int_t(qt1) , timeCFD->At(ipmt) ) ;
285 Double_t sl = (timeLED->At(ipmt) - time[ipmt])*channelWidth;
286 Double_t qt=((TGraph*)fAmpLEDrec.At(ipmt))->Eval(sl/1000.);
287 frecpoints->SetTime(ipmt,time[ipmt]);
288 frecpoints->SetAmp(ipmt,adc[ipmt]);
289 frecpoints->SetAmpLED(ipmt,qt);
290 AliDebug(1,Form(" QTC %f mv, QTC %f MIPS time in chann %f time %f ",adc[ipmt], adc[ipmt]/50.,time[ipmt], time[ipmt]*channelWidth));
292 if(option == "cosmic") {
293 Float_t qt0 = Float_t(chargeQT0->At(ipmt));
294 Float_t qt1 = Float_t(chargeQT1->At(ipmt));
295 if((qt0-qt1)>0) adc[ipmt] = qt0-qt1;
296 time[ipmt] = calib-> WalkCorrection( ipmt, Int_t(adc[ipmt]), timeCFD->At(ipmt) ) ;
297 Double_t sl = timeLED->At(ipmt) - time[ipmt];
298 Double_t qt=((TGraph*)fAmpLEDrec.At(ipmt))->Eval(sl);
299 frecpoints->SetTime(ipmt,time[ipmt]);
300 frecpoints->SetAmp(ipmt,adc[ipmt]);
301 frecpoints->SetAmpLED(ipmt,qt);
302 AliDebug(10,Form(" QTC %i , time in chann %i led %i ",
303 Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( qt)));
313 for (Int_t ipmt=0; ipmt<12; ipmt++){
314 if(time[ipmt] > 1 ) {
315 if(time[ipmt]<besttimeC){
316 besttimeC=time[ipmt]; //timeC
321 for ( Int_t ipmt=12; ipmt<24; ipmt++){
323 if(time[ipmt]<besttimeA) {
324 besttimeA=time[ipmt]; //timeA
328 if(besttimeA !=9999999) frecpoints->SetTimeBestA(Int_t(besttimeA));
329 if( besttimeC != 9999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
330 AliDebug(1,Form(" besttimeA %f ps, besttimeC %f ps",besttimeA, besttimeC));
331 Float_t c = 0.0299792; // cm/ps
332 Float_t vertex = 99999;
333 if(besttimeA <9999999 && besttimeC < 9999999 ){
334 timeDiff =( besttimeC - besttimeA) *channelWidth;
336 meanTime = (meanT0 - (besttimeA + besttimeC)/2) * channelWidth;
337 if(option == "cosmic") meanTime = (besttimeA + besttimeC)/2;
338 vertex = c*(timeDiff)/2. + (fdZonA - fdZonC)/2;
339 AliDebug(1,Form(" timeDiff %f ps, meanTime %f ps, vertex %f cm",timeDiff, meanTime,vertex ));
340 frecpoints->SetVertex(vertex);
341 frecpoints->SetMeanTime(Int_t(meanTime));
344 //time in each channel as time[ipmt]-MeanTimeinThisChannel(with vertex=0)
346 for (Int_t ipmt=0; ipmt<24; ipmt++) {
348 time[ipmt] = (time[ipmt] - fTime0vertex[ipmt])*channelWidth;
349 frecpoints->SetTime(ipmt,time[ipmt]);
362 //____________________________________________________________
364 void AliT0Reconstructor::FillESD(TTree */*digitsTree*/, TTree *clustersTree, AliESDEvent *pESD) const
367 /***************************************************
368 Resonstruct digits to vertex position
369 ****************************************************/
371 AliDebug(1,Form("Start FillESD T0"));
373 TTree *treeR = clustersTree;
375 AliT0RecPoint* frecpoints= new AliT0RecPoint ();
377 AliError("Reconstruct Fill ESD >> no recpoints found");
381 AliDebug(1,Form("Start FillESD T0"));
382 TBranch *brRec = treeR->GetBranch("T0");
384 brRec->SetAddress(&frecpoints);
386 AliError(Form("EXEC Branch T0 rec not found"));
391 Float_t amp[24], time[24];
392 Float_t zPosition = frecpoints -> GetVertex();
393 Float_t timeStart = frecpoints -> GetMeanTime() ;
394 for ( Int_t i=0; i<24; i++) {
395 time[i] = Float_t (frecpoints -> GetTime(i)); // ps to ns
396 amp[i] = frecpoints -> GetAmp(i);
398 pESD->SetT0zVertex(zPosition); //vertex Z position
399 pESD->SetT0(timeStart); // interaction time
400 pESD->SetT0time(time); // best TOF on each PMT
401 pESD->SetT0amplitude(amp); // number of particles(MIPs) on each PMT
403 AliDebug(1,Form(" Z position %f cm, T0 %f ps",zPosition , timeStart));
405 } // vertex in 3 sigma