the same calibration for cosmic and pdc data
[u/mrichter/AliRoot.git] / T0 / AliT0Reconstructor.cxx
CommitLineData
dc7ca31d 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
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 **************************************************************************/
15
16/* $Id$ */
72e48d95 17/*********************************************************************
18 * T0 reconstruction and filling ESD
19 * - reconstruct mean time (interation time)
20 * - vertex position
21 * - multiplicity
22 ********************************************************************/
dc7ca31d 23
af885e0f 24#include <AliESDEvent.h>
dc7ca31d 25#include "AliLog.h"
dc7ca31d 26#include "AliT0RecPoint.h"
27#include "AliRawReader.h"
28#include "AliT0RawReader.h"
dc7ca31d 29#include "AliT0digit.h"
30#include "AliT0Reconstructor.h"
31#include "AliT0Parameters.h"
c41ceaac 32#include "AliT0Calibrator.h"
dc7ca31d 33
34#include <TArrayI.h>
35#include <TGraph.h>
aad72f45 36#include <TMath.h>
b09247a2 37#include <Riostream.h>
dc7ca31d 38
39ClassImp(AliT0Reconstructor)
40
c41ceaac 41 AliT0Reconstructor:: AliT0Reconstructor(): AliReconstructor(),
f16935f7 42 fdZonA(0),
43 fdZonC(0),
44 fZposition(0),
45 fParam(NULL),
2e6a5ee0 46 fAmpLEDrec(),
c883fdf2 47 fQTC(0),
48 fAmpLED(0),
2e6a5ee0 49 fCalib()
e0bba6cc 50{
72e48d95 51 //constructor
52
c41ceaac 53 AliDebug(1,"Start reconstructor ");
74adb36a 54
55 fParam = AliT0Parameters::Instance();
56 fParam->Init();
c883fdf2 57 TString option = GetOption();
58
74adb36a 59 for (Int_t i=0; i<24; i++){
2e6a5ee0 60 TGraph* gr = fParam ->GetAmpLEDRec(i);
29ed1d0e 61 if (gr) fAmpLEDrec.AddAtAndExpand(gr,i) ;
c883fdf2 62 TGraph* gr1 = fParam ->GetAmpLED(i);
63 if (gr1) fAmpLED.AddAtAndExpand(gr1,i) ;
64 TGraph* gr2 = fParam ->GetQTC(i);
65 if (gr2) fQTC.AddAtAndExpand(gr2,i) ;
66
67 }
29ed1d0e 68
f16935f7 69 fdZonC = TMath::Abs(fParam->GetZPositionShift("T0/C/PMT1"));
70 fdZonA = TMath::Abs(fParam->GetZPositionShift("T0/A/PMT15"));
12e9daf9 71 fCalib = new AliT0Calibrator();
72
c41ceaac 73}
74//____________________________________________________________________
e0bba6cc 75
c41ceaac 76AliT0Reconstructor::AliT0Reconstructor(const AliT0Reconstructor &r):
d76c31f4 77 AliReconstructor(r),
f16935f7 78 fdZonA(0),
79 fdZonC(0),
80 fZposition(0),
81 fParam(NULL),
2e6a5ee0 82 fAmpLEDrec(),
c883fdf2 83 fQTC(0),
84 fAmpLED(0),
2e6a5ee0 85 fCalib()
86
f16935f7 87 {
c41ceaac 88 //
89 // AliT0Reconstructor copy constructor
90 //
e0bba6cc 91
c41ceaac 92 ((AliT0Reconstructor &) r).Copy(*this);
e0bba6cc 93
94}
95
c41ceaac 96//_____________________________________________________________________________
97AliT0Reconstructor &AliT0Reconstructor::operator=(const AliT0Reconstructor &r)
dc7ca31d 98{
c41ceaac 99 //
100 // Assignment operator
101 //
102
103 if (this != &r) ((AliT0Reconstructor &) r).Copy(*this);
104 return *this;
e0bba6cc 105
dc7ca31d 106}
c41ceaac 107
108//_____________________________________________________________________________
109
dc7ca31d 110void AliT0Reconstructor::Reconstruct(TTree*digitsTree, TTree*clustersTree) const
94c27e4f 111
dc7ca31d 112{
94c27e4f 113 // T0 digits reconstruction
114 // T0RecPoint writing
c41ceaac 115
74adb36a 116
c41ceaac 117 TArrayI * timeCFD = new TArrayI(24);
118 TArrayI * timeLED = new TArrayI(24);
119 TArrayI * chargeQT0 = new TArrayI(24);
120 TArrayI * chargeQT1 = new TArrayI(24);
74adb36a 121
dc7ca31d 122
94c27e4f 123 // Int_t mV2Mip = param->GetmV2Mip();
dc7ca31d 124 //mV2Mip = param->GetmV2Mip();
8955c6b4 125 Float_t channelWidth = fParam->GetChannelWidth() ;
b95e8d87 126 Float_t meanVertex = fParam->GetMeanVertex();
94c27e4f 127
dc7ca31d 128 AliDebug(1,Form("Start DIGITS reconstruction "));
94c27e4f 129
2e6a5ee0 130
131 TBranch *brDigits=digitsTree->GetBranch("T0");
e0bba6cc 132 AliT0digit *fDigits = new AliT0digit() ;
dc7ca31d 133 if (brDigits) {
134 brDigits->SetAddress(&fDigits);
135 }else{
f16935f7 136 AliError(Form("EXEC Branch T0 digits not found"));
137 return;
dc7ca31d 138 }
e0bba6cc 139
c41ceaac 140 digitsTree->GetEvent(0);
141 digitsTree->GetEntry(0);
142 brDigits->GetEntry(0);
143 fDigits->GetTimeCFD(*timeCFD);
144 fDigits->GetTimeLED(*timeLED);
145 fDigits->GetQT0(*chargeQT0);
146 fDigits->GetQT1(*chargeQT1);
446d6ec4 147 Int_t onlineMean = fDigits->MeanTime();
c883fdf2 148
c41ceaac 149
150 Float_t besttimeA=999999;
151 Float_t besttimeC=999999;
152 Int_t pmtBestA=99999;
153 Int_t pmtBestC=99999;
dc7ca31d 154 Float_t timeDiff=999999, meanTime=0;
155
c883fdf2 156 Int_t mv2MIP = fParam-> GetmV2Mip();
157
e0bba6cc 158
94c27e4f 159 AliT0RecPoint* frecpoints= new AliT0RecPoint ();
160 clustersTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
161
b95e8d87 162 Float_t time[24], adc[24];
dc7ca31d 163 for (Int_t ipmt=0; ipmt<24; ipmt++) {
c41ceaac 164 if(timeCFD->At(ipmt)>0 ){
29d3e0eb 165 Double_t qt0 = Double_t(chargeQT0->At(ipmt));
166 Double_t qt1 = Double_t(chargeQT1->At(ipmt));
12e9daf9 167 if((qt1-qt0)>0) adc[ipmt] = Int_t (TMath::Exp( Double_t (channelWidth*(qt1-qt0)/1000)));
168
2e6a5ee0 169 time[ipmt] = fCalib-> WalkCorrection( ipmt, Int_t(qt1) , timeCFD->At(ipmt), "pdc" ) ;
c883fdf2 170
c41ceaac 171 //LED
a7027400 172 Float_t ampLED; //LED
29d3e0eb 173 Double_t sl = (timeLED->At(ipmt) - time[ipmt])*channelWidth;
a7027400 174 if( adc[ipmt]/Float_t(mv2MIP) < 20)
175 {
176 Double_t qt=((TGraph*)fAmpLEDrec.At(ipmt))->Eval(sl/1000.);
177 ampLED = qt/Float_t(mv2MIP);
178 AliDebug(1,Form(" ipmt %i QTC %f ch QTC in MIP %f, time in chann %f (led-cfd) %f in MIPs %f",
179 ipmt, adc[ipmt], adc[ipmt]/Float_t(mv2MIP), time[ipmt],sl,ampLED ));
180 }
181 else
182 { AliDebug(1,Form(" amplitude %f MIPs on PMT %i, write QTC in both ", (adc[ipmt]/Float_t(mv2MIP)), ipmt));
183 ampLED=adc[ipmt]/Float_t(mv2MIP);}
c883fdf2 184 frecpoints->SetTime(ipmt,time[ipmt]);
185 frecpoints->SetAmp(ipmt,adc[ipmt]/Float_t(mv2MIP));
c724dd64 186 frecpoints->SetAmpLED(ipmt,ampLED);
dc7ca31d 187 }
188 else {
189 time[ipmt] = 0;
190 adc[ipmt] = 0;
191 }
192 }
94c27e4f 193
dc7ca31d 194 for (Int_t ipmt=0; ipmt<12; ipmt++){
195 if(time[ipmt] > 1 ) {
c41ceaac 196 if(time[ipmt]<besttimeC){
197 besttimeC=time[ipmt]; //timeC
198 pmtBestC=ipmt;
dc7ca31d 199 }
200 }
201 }
202 for ( Int_t ipmt=12; ipmt<24; ipmt++){
203 if(time[ipmt] > 1) {
c41ceaac 204 if(time[ipmt]<besttimeA) {
205 besttimeA=time[ipmt]; //timeA
206 pmtBestA=ipmt;}
dc7ca31d 207 }
208 }
c41ceaac 209 if(besttimeA !=999999) frecpoints->SetTimeBestA(Int_t(besttimeA));
210 if( besttimeC != 999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
12e9daf9 211 AliDebug(1,Form(" besttimeA %f ch, besttimeC %f ch",besttimeA, besttimeC));
dc7ca31d 212 Float_t c = 0.0299792; // cm/ps
213 Float_t vertex = 0;
c41ceaac 214 if(besttimeA !=999999 && besttimeC != 999999 ){
12e9daf9 215 timeDiff = (besttimeC - besttimeA)*channelWidth;
446d6ec4 216 meanTime = (Float_t((besttimeA + besttimeC -4000)/2) * channelWidth);
12e9daf9 217 // meanTime = (meanT0 - (besttimeA + besttimeC)/2) * channelWidth;
b95e8d87 218 vertex = meanVertex - c*(timeDiff)/2. + (fdZonA - fdZonC)/2;
dc7ca31d 219 frecpoints->SetVertex(vertex);
220 frecpoints->SetMeanTime(Int_t(meanTime));
446d6ec4 221 //online mean
222 frecpoints->SetOnlineMean(Int_t(onlineMean * channelWidth));
223 AliDebug(1,Form(" timeDiff %f ps, meanTime %f ps, vertex %f cm online mean %i ps",timeDiff, meanTime,vertex, Int_t(onlineMean * channelWidth )));
dc7ca31d 224
225 }
b95e8d87 226
dc7ca31d 227 clustersTree->Fill();
bd375212 228
229 delete timeCFD;
230 delete timeLED;
231 delete chargeQT0;
232 delete chargeQT1;
dc7ca31d 233}
234
235
c41ceaac 236//_______________________________________________________________________
237
238void AliT0Reconstructor::Reconstruct(AliRawReader* rawReader, TTree*recTree) const
239{
94c27e4f 240 // T0 raw ->
241 // T0RecPoint writing
242
243 //Q->T-> coefficients !!!! should be measured!!!
e8ed1cd0 244 Int_t allData[110][5];
2e6a5ee0 245
e8ed1cd0 246 Int_t timeCFD[24], timeLED[24], chargeQT0[24], chargeQT1[24];
aaa0a98f 247 TString option = GetOption();
bce12dc5 248 AliDebug(10,Form("Option: %s\n", option.Data()));
2e6a5ee0 249
2e6a5ee0 250
bce12dc5 251 for (Int_t i0=0; i0<105; i0++)
252 {
253 for (Int_t j0=0; j0<5; j0++) allData[i0][j0]=0;
254 }
2e6a5ee0 255
bce12dc5 256 Float_t besttimeA=9999999;
257 Float_t besttimeC=9999999;
258 Int_t pmtBestA=99999;
259 Int_t pmtBestC=99999;
260 Float_t timeDiff=9999999, meanTime=0;
261 Double_t qt=0;
262 Int_t mv2MIP = fParam-> GetmV2Mip();
b95e8d87 263 Float_t meanVertex = fParam->GetMeanVertex();
264
265 // UInt_t type =rawReader->GetType();
bce12dc5 266
267 AliT0RecPoint* frecpoints= new AliT0RecPoint ();
268
269 recTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
2e6a5ee0 270
271
bce12dc5 272 AliDebug(10," before read data ");
273 AliT0RawReader myrawreader(rawReader);
274 if (!myrawreader.Next())
275 AliDebug(1,Form(" no raw data found!!"));
276 else
277 {
278 for (Int_t i=0; i<105; i++) {
279 for (Int_t iHit=0; iHit<5; iHit++)
280 {
281 allData[i][iHit] = myrawreader.GetData(i,iHit);
282 }
283 }
284
285 Float_t channelWidth = fParam->GetChannelWidth() ;
286
287 // Int_t meanT0 = fParam->GetMeanT0();
288 if(option == "pdc"){
289 for (Int_t in=0; in<24; in++)
290 {
291
292 timeLED[in] = allData[in+1][0] ;
293 timeCFD[in] = allData[in+25][0] ;
294 chargeQT1[in] = allData[in+57][0] ;
a7027400 295 chargeQT0[in] = allData[in+81][0] ;
bce12dc5 296 }
2e6a5ee0 297 }
bce12dc5 298
b95e8d87 299 if(option == "cosmic" ) //&& type == 7 )
bce12dc5 300 {
301
302 for (Int_t in=0; in<12; in++)
303 {
304 timeCFD[in] = allData[in+1][0] ;
305 timeCFD[in+12] = allData[in+56+1][0] ;
306 timeLED[in] = allData[in+12+1][0] ;
307 timeLED[in+12] = allData[in+68+1][0] ;
308 }
309
310 for (Int_t in=0; in<12; in++)
311 {
312 chargeQT1[in]=allData[2*in+25][0];
313 chargeQT0[in]=allData[2*in+26][0];
314 }
315
316 for (Int_t in=12; in<24; in++)
317 {
318 chargeQT1[in]=allData[2*in+57][0];
319 chargeQT0[in]=allData[2*in+58][0];
320 }
321
322 } //cosmic with physics event
2e6a5ee0 323 for (Int_t in=0; in<24; in++)
c883fdf2 324 AliDebug(10, Form(" readed Raw %i %i %i %i %i",
325 in, timeLED[in],timeCFD[in],chargeQT0[in],chargeQT1[in]));
446d6ec4 326 Int_t onlineMean = allData[49][0];
2e6a5ee0 327
12e9daf9 328 Float_t time[24], adc[24];
2e6a5ee0 329 for (Int_t ipmt=0; ipmt<24; ipmt++) {
330 if(timeCFD[ipmt]>0 && timeLED[ipmt]>0){
bce12dc5 331 //for simulated data
2e6a5ee0 332 if(option == "pdc"){
333 Double_t qt0 = Double_t(chargeQT0[ipmt]);
334 Double_t qt1 = Double_t(chargeQT1[ipmt]);
29ed1d0e 335 if((qt1-qt0)>0) adc[ipmt] = Int_t(TMath::Exp( Double_t (channelWidth*(qt1-qt0)/1000.)));
2e6a5ee0 336 time[ipmt] = fCalib-> WalkCorrection( ipmt,Int_t(qt1) , timeCFD[ipmt], "pdc" ) ;
337 Double_t sl = (timeLED[ipmt] - time[ipmt])*channelWidth;
a7027400 338 //pp collison
339 if( adc[ipmt]/Float_t(mv2MIP) < 20)
340 {
341 if(fAmpLEDrec.At(ipmt))
342 qt=((TGraph*)fAmpLEDrec.At(ipmt))->Eval(sl/1000.);
343 }
344 else //PbPb
345 { AliDebug(1,Form(" amplitude %f MIPs on PMT %i, write QTC in both ", (adc[ipmt]/Float_t(mv2MIP)), ipmt));
346 qt=adc[ipmt]/Float_t(mv2MIP);}
347
c883fdf2 348 frecpoints->SetTime(ipmt,time[ipmt]);
349 frecpoints->SetAmp(ipmt,adc[ipmt]/Float_t(mv2MIP));
350 frecpoints->SetAmpLED(ipmt,qt/Float_t(mv2MIP));
446d6ec4 351 AliDebug(10,Form(" QTC %f mv, time in chann %f ampLED %f",adc[ipmt] ,time[ipmt], qt));
c883fdf2 352 AliDebug(10,Form(" Amlitude in MIPS LED %f , QTC %f \n ", adc[ipmt]/Float_t(mv2MIP),qt/Float_t(mv2MIP)));
2e6a5ee0 353 }
bce12dc5 354
355
356 //for physics data
b95e8d87 357 if(option == "cosmic") // && type == 7)
358 {
2e6a5ee0 359 if(( chargeQT1[ipmt] - chargeQT0[ipmt])>0)
360 adc[ipmt] = chargeQT1[ipmt] - chargeQT0[ipmt];
361 else
362 adc[ipmt] = 0;
363 // time[ipmt] = fCalib-> WalkCorrection( ipmt, adc[ipmt], timeCFD[ipmt],"cosmic" ) ;
bce12dc5 364
2e6a5ee0 365 Double_t sl = timeLED[ipmt] - timeCFD[ipmt];
366 time[ipmt] = fCalib-> WalkCorrection( ipmt, Int_t(sl), timeCFD[ipmt],"cosmic" ) ;
c883fdf2 367 AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
368 ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
369 Double_t ampMip =( (TGraph*)fAmpLED.At(ipmt))->Eval(sl);
370 Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
371 AliDebug(10,Form(" Amlitude in MIPS LED %f , QTC %f \n ",ampMip,qtMip));
bce12dc5 372
1d7681da 373 frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
c883fdf2 374 frecpoints->SetAmp(ipmt, Float_t( ampMip)); //for cosmic &pp beam
375 frecpoints->SetAmpLED(ipmt, Float_t(qtMip));
bce12dc5 376 } //if physic data end
2e6a5ee0 377
378 }
379 else {
380 time[ipmt] = 0;
381 adc[ipmt] = 0;
382 }
383 }
384
385 for (Int_t ipmt=0; ipmt<12; ipmt++){
386 if(time[ipmt] > 1 ) {
387 if(time[ipmt]<besttimeC){
388 besttimeC=time[ipmt]; //timeC
389 pmtBestC=ipmt;
390 }
391 }
392 }
393 for ( Int_t ipmt=12; ipmt<24; ipmt++){
394 if(time[ipmt] > 1) {
395 if(time[ipmt]<besttimeA) {
396 besttimeA=time[ipmt]; //timeA
397 pmtBestA=ipmt;}
398 }
399 }
400 if(besttimeA !=9999999) frecpoints->SetTimeBestA(Int_t(besttimeA));
401 if( besttimeC != 9999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
12e9daf9 402 AliDebug(1,Form(" besttimeA %f ps, besttimeC %f ps",besttimeA, besttimeC));
2e6a5ee0 403 Float_t c = 0.0299792; // cm/ps
404 Float_t vertex = 99999;
405 if(besttimeA <9999999 && besttimeC < 9999999 ){
12e9daf9 406 timeDiff = ( besttimeC - besttimeA) *channelWidth;
446d6ec4 407 if(option == "pdc"){
408 // meanTime = (besttimeA + besttimeC)/2 * channelWidth;
409 meanTime = (besttimeA + besttimeC-4000.)/2 * channelWidth;
410 onlineMean = Int_t (onlineMean * channelWidth);
411 }
412 if(option == "cosmic") {
12e9daf9 413 meanTime = Float_t((besttimeA + besttimeC)/2);
1d7681da 414 onlineMean = onlineMean ;
446d6ec4 415 }
b95e8d87 416 vertex = meanVertex -c*(timeDiff)/2.; //+ (fdZonA - fdZonC)/2;
2e6a5ee0 417 frecpoints->SetVertex(vertex);
418 frecpoints->SetMeanTime(Int_t(meanTime));
1d7681da 419 frecpoints->SetOnlineMean(Int_t(onlineMean));
446d6ec4 420 AliDebug(1,Form(" timeDiff %f ps, meanTime %f ps, vertex %f cm online mean %i ",timeDiff, meanTime,vertex, onlineMean));
2e6a5ee0 421
422 }
bce12dc5 423 } // if (else )raw data
424 recTree->Fill();
425 if(frecpoints) delete frecpoints;
c41ceaac 426}
bce12dc5 427
428
c41ceaac 429//____________________________________________________________
430
d76c31f4 431void AliT0Reconstructor::FillESD(TTree */*digitsTree*/, TTree *clustersTree, AliESDEvent *pESD) const
dc7ca31d 432{
433
434 /***************************************************
435 Resonstruct digits to vertex position
436 ****************************************************/
437
dc7ca31d 438 AliDebug(1,Form("Start FillESD T0"));
439
d76c31f4 440 TTree *treeR = clustersTree;
dc7ca31d 441
442 AliT0RecPoint* frecpoints= new AliT0RecPoint ();
443 if (!frecpoints) {
444 AliError("Reconstruct Fill ESD >> no recpoints found");
445 return;
446 }
447
448 AliDebug(1,Form("Start FillESD T0"));
449 TBranch *brRec = treeR->GetBranch("T0");
450 if (brRec) {
451 brRec->SetAddress(&frecpoints);
452 }else{
f16935f7 453 AliError(Form("EXEC Branch T0 rec not found"));
dc7ca31d 454 return;
455 }
456
457 brRec->GetEntry(0);
f16935f7 458 Float_t amp[24], time[24];
459 Float_t zPosition = frecpoints -> GetVertex();
460 Float_t timeStart = frecpoints -> GetMeanTime() ;
461 for ( Int_t i=0; i<24; i++) {
94c27e4f 462 time[i] = Float_t (frecpoints -> GetTime(i)); // ps to ns
dc7ca31d 463 amp[i] = frecpoints -> GetAmp(i);
464 }
f16935f7 465 pESD->SetT0zVertex(zPosition); //vertex Z position
dc7ca31d 466 pESD->SetT0(timeStart); // interaction time
467 pESD->SetT0time(time); // best TOF on each PMT
468 pESD->SetT0amplitude(amp); // number of particles(MIPs) on each PMT
5325480c 469
f16935f7 470 AliDebug(1,Form(" Z position %f cm, T0 %f ps",zPosition , timeStart));
dc7ca31d 471
dc7ca31d 472} // vertex in 3 sigma
473
474
475
476
477
478