Adding new READMEcalign page in documentation
[u/mrichter/AliRoot.git] / T0 / AliT0Reconstructor.cxx
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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
74adb36a 53 fParam = AliT0Parameters::Instance();
54 fParam->Init();
c883fdf2 55
74adb36a 56 for (Int_t i=0; i<24; i++){
2e6a5ee0 57 TGraph* gr = fParam ->GetAmpLEDRec(i);
29ed1d0e 58 if (gr) fAmpLEDrec.AddAtAndExpand(gr,i) ;
c883fdf2 59 TGraph* gr1 = fParam ->GetAmpLED(i);
60 if (gr1) fAmpLED.AddAtAndExpand(gr1,i) ;
61 TGraph* gr2 = fParam ->GetQTC(i);
539b9cb9 62 if (gr2) fQTC.AddAtAndExpand(gr2,i) ;
c883fdf2 63 }
539b9cb9 64
29ed1d0e 65
f16935f7 66 fdZonC = TMath::Abs(fParam->GetZPositionShift("T0/C/PMT1"));
67 fdZonA = TMath::Abs(fParam->GetZPositionShift("T0/A/PMT15"));
539b9cb9 68
12e9daf9 69 fCalib = new AliT0Calibrator();
70
c41ceaac 71}
72//____________________________________________________________________
e0bba6cc 73
c41ceaac 74AliT0Reconstructor::AliT0Reconstructor(const AliT0Reconstructor &r):
d76c31f4 75 AliReconstructor(r),
f16935f7 76 fdZonA(0),
539b9cb9 77 fdZonC(0),
f16935f7 78 fZposition(0),
79 fParam(NULL),
539b9cb9 80 fAmpLEDrec(0),
c883fdf2 81 fQTC(0),
82 fAmpLED(0),
539b9cb9 83 fCalib()
2e6a5ee0 84
f16935f7 85 {
c41ceaac 86 //
87 // AliT0Reconstructor copy constructor
88 //
e0bba6cc 89
c41ceaac 90 ((AliT0Reconstructor &) r).Copy(*this);
e0bba6cc 91
92}
93
c41ceaac 94//_____________________________________________________________________________
95AliT0Reconstructor &AliT0Reconstructor::operator=(const AliT0Reconstructor &r)
dc7ca31d 96{
c41ceaac 97 //
98 // Assignment operator
99 //
c41ceaac 100 if (this != &r) ((AliT0Reconstructor &) r).Copy(*this);
101 return *this;
e0bba6cc 102
dc7ca31d 103}
c41ceaac 104
105//_____________________________________________________________________________
106
dc7ca31d 107void AliT0Reconstructor::Reconstruct(TTree*digitsTree, TTree*clustersTree) const
94c27e4f 108
dc7ca31d 109{
94c27e4f 110 // T0 digits reconstruction
539b9cb9 111 Int_t refAmp = GetRecoParam()->GetRefAmp();
112 Int_t refPoint = GetRecoParam()->GetRefPoint();
113
c41ceaac 114 TArrayI * timeCFD = new TArrayI(24);
115 TArrayI * timeLED = new TArrayI(24);
116 TArrayI * chargeQT0 = new TArrayI(24);
117 TArrayI * chargeQT1 = new TArrayI(24);
74adb36a 118
d0bcd1fb 119
8955c6b4 120 Float_t channelWidth = fParam->GetChannelWidth() ;
b95e8d87 121 Float_t meanVertex = fParam->GetMeanVertex();
94c27e4f 122
dc7ca31d 123 AliDebug(1,Form("Start DIGITS reconstruction "));
94c27e4f 124
2e6a5ee0 125
d0bcd1fb 126 TBranch *brDigits=digitsTree->GetBranch("T0");
e0bba6cc 127 AliT0digit *fDigits = new AliT0digit() ;
dc7ca31d 128 if (brDigits) {
129 brDigits->SetAddress(&fDigits);
130 }else{
f16935f7 131 AliError(Form("EXEC Branch T0 digits not found"));
132 return;
dc7ca31d 133 }
e0bba6cc 134
c41ceaac 135 digitsTree->GetEvent(0);
136 digitsTree->GetEntry(0);
137 brDigits->GetEntry(0);
138 fDigits->GetTimeCFD(*timeCFD);
139 fDigits->GetTimeLED(*timeLED);
140 fDigits->GetQT0(*chargeQT0);
141 fDigits->GetQT1(*chargeQT1);
446d6ec4 142 Int_t onlineMean = fDigits->MeanTime();
c883fdf2 143
c41ceaac 144
145 Float_t besttimeA=999999;
146 Float_t besttimeC=999999;
147 Int_t pmtBestA=99999;
148 Int_t pmtBestC=99999;
dc7ca31d 149 Float_t timeDiff=999999, meanTime=0;
150
94c27e4f 151 AliT0RecPoint* frecpoints= new AliT0RecPoint ();
152 clustersTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
153
b95e8d87 154 Float_t time[24], adc[24];
dc7ca31d 155 for (Int_t ipmt=0; ipmt<24; ipmt++) {
c41ceaac 156 if(timeCFD->At(ipmt)>0 ){
d0bcd1fb 157 if(( chargeQT1->At(ipmt) - chargeQT0->At(ipmt))>0)
158 adc[ipmt] = chargeQT1->At(ipmt) - chargeQT0->At(ipmt);
a7027400 159 else
d0bcd1fb 160 adc[ipmt] = 0;
161
539b9cb9 162 time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt], timeCFD->At(ipmt)) ;
d0bcd1fb 163
164 Double_t sl = Double_t(timeLED->At(ipmt) - timeCFD->At(ipmt));
165 // time[ipmt] = fCalib-> WalkCorrection( ipmt, Int_t(sl), timeCFD[ipmt],"cosmic" ) ;
166 AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
167 ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
168 Double_t ampMip =((TGraph*)fAmpLED.At(ipmt))->Eval(sl);
169 Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
170 AliDebug(10,Form(" Amlitude in MIPS LED %f , QTC %f in channels %i\n ",ampMip,qtMip, adc[ipmt]));
171
172 frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
173 frecpoints->SetAmp(ipmt, Float_t( ampMip)); //for cosmic &pp beam
174 frecpoints->SetAmpLED(ipmt, Float_t(qtMip));
175
dc7ca31d 176 }
177 else {
178 time[ipmt] = 0;
179 adc[ipmt] = 0;
180 }
181 }
94c27e4f 182
dc7ca31d 183 for (Int_t ipmt=0; ipmt<12; ipmt++){
184 if(time[ipmt] > 1 ) {
c41ceaac 185 if(time[ipmt]<besttimeC){
186 besttimeC=time[ipmt]; //timeC
187 pmtBestC=ipmt;
dc7ca31d 188 }
189 }
190 }
191 for ( Int_t ipmt=12; ipmt<24; ipmt++){
192 if(time[ipmt] > 1) {
c41ceaac 193 if(time[ipmt]<besttimeA) {
194 besttimeA=time[ipmt]; //timeA
195 pmtBestA=ipmt;}
dc7ca31d 196 }
197 }
c41ceaac 198 if(besttimeA !=999999) frecpoints->SetTimeBestA(Int_t(besttimeA));
199 if( besttimeC != 999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
d0bcd1fb 200 AliDebug(10,Form(" besttimeA %f ch, besttimeC %f ch",besttimeA, besttimeC));
dc7ca31d 201 Float_t c = 0.0299792; // cm/ps
202 Float_t vertex = 0;
c41ceaac 203 if(besttimeA !=999999 && besttimeC != 999999 ){
9b83615d 204 // timeDiff = (besttimeC - besttimeA)*channelWidth;
205 timeDiff = (besttimeA - besttimeC)*channelWidth;
d0bcd1fb 206 meanTime = Float_t((besttimeA + besttimeC)/2);// * channelWidth);
12e9daf9 207 // meanTime = (meanT0 - (besttimeA + besttimeC)/2) * channelWidth;
d0bcd1fb 208 vertex = meanVertex - c*(timeDiff)/2.;// + (fdZonA - fdZonC)/2;
dc7ca31d 209 frecpoints->SetVertex(vertex);
210 frecpoints->SetMeanTime(Int_t(meanTime));
446d6ec4 211 //online mean
d0bcd1fb 212 frecpoints->SetOnlineMean(Int_t(onlineMean));
539b9cb9 213 AliDebug(10,Form(" timeDiff %f #channel, meanTime %f #channel, vertex %f cm online mean %i ps",timeDiff, meanTime,vertex, Int_t(onlineMean)));
dc7ca31d 214
215 }
b95e8d87 216
dc7ca31d 217 clustersTree->Fill();
bd375212 218
219 delete timeCFD;
220 delete timeLED;
221 delete chargeQT0;
222 delete chargeQT1;
dc7ca31d 223}
224
225
c41ceaac 226//_______________________________________________________________________
227
228void AliT0Reconstructor::Reconstruct(AliRawReader* rawReader, TTree*recTree) const
229{
94c27e4f 230 // T0 raw ->
539b9cb9 231 //
232 // reference amplitude and time ref. point from reco param
233
234 Int_t refAmp = GetRecoParam()->GetRefAmp();
235 Int_t refPoint = GetRecoParam()->GetRefPoint();
236
237
e8ed1cd0 238 Int_t allData[110][5];
2e6a5ee0 239
e8ed1cd0 240 Int_t timeCFD[24], timeLED[24], chargeQT0[24], chargeQT1[24];
2e6a5ee0 241
bce12dc5 242 for (Int_t i0=0; i0<105; i0++)
243 {
244 for (Int_t j0=0; j0<5; j0++) allData[i0][j0]=0;
245 }
2e6a5ee0 246
bce12dc5 247 Float_t besttimeA=9999999;
248 Float_t besttimeC=9999999;
249 Int_t pmtBestA=99999;
250 Int_t pmtBestC=99999;
251 Float_t timeDiff=9999999, meanTime=0;
b95e8d87 252 Float_t meanVertex = fParam->GetMeanVertex();
29a60970 253
bce12dc5 254 AliT0RecPoint* frecpoints= new AliT0RecPoint ();
255
256 recTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
2e6a5ee0 257
bce12dc5 258 AliDebug(10," before read data ");
259 AliT0RawReader myrawreader(rawReader);
260 if (!myrawreader.Next())
261 AliDebug(1,Form(" no raw data found!!"));
262 else
263 {
264 for (Int_t i=0; i<105; i++) {
265 for (Int_t iHit=0; iHit<5; iHit++)
266 {
267 allData[i][iHit] = myrawreader.GetData(i,iHit);
268 }
269 }
270
271 Float_t channelWidth = fParam->GetChannelWidth() ;
272
273 // Int_t meanT0 = fParam->GetMeanT0();
d0bcd1fb 274
bce12dc5 275
276 for (Int_t in=0; in<12; in++)
277 {
278 timeCFD[in] = allData[in+1][0] ;
279 timeCFD[in+12] = allData[in+56+1][0] ;
280 timeLED[in] = allData[in+12+1][0] ;
281 timeLED[in+12] = allData[in+68+1][0] ;
d0bcd1fb 282 AliDebug(10, Form(" readed i %i cfdC %i cfdA %i ledC %i ledA%i ",
283 in, timeCFD[in],timeCFD[in+12],timeLED[in],
284 timeLED[in+12]));
bce12dc5 285 }
286
287 for (Int_t in=0; in<12; in++)
288 {
d0bcd1fb 289 chargeQT0[in]=allData[2*in+25][0];
290 chargeQT1[in]=allData[2*in+26][0];
bce12dc5 291 }
292
293 for (Int_t in=12; in<24; in++)
294 {
d0bcd1fb 295 chargeQT0[in]=allData[2*in+57][0];
296 chargeQT1[in]=allData[2*in+58][0];
bce12dc5 297 }
298
d0bcd1fb 299 // } //cosmic with physics event
2e6a5ee0 300 for (Int_t in=0; in<24; in++)
c883fdf2 301 AliDebug(10, Form(" readed Raw %i %i %i %i %i",
302 in, timeLED[in],timeCFD[in],chargeQT0[in],chargeQT1[in]));
446d6ec4 303 Int_t onlineMean = allData[49][0];
2e6a5ee0 304
12e9daf9 305 Float_t time[24], adc[24];
2e6a5ee0 306 for (Int_t ipmt=0; ipmt<24; ipmt++) {
307 if(timeCFD[ipmt]>0 && timeLED[ipmt]>0){
bce12dc5 308 //for simulated data
d0bcd1fb 309 //for physics data
310 if(( chargeQT1[ipmt] - chargeQT0[ipmt])>0)
311 adc[ipmt] = chargeQT1[ipmt] - chargeQT0[ipmt];
312 else
313 adc[ipmt] = 0;
bce12dc5 314
539b9cb9 315
316 time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt], timeCFD[ipmt] ) ;
bce12dc5 317
d0bcd1fb 318 Double_t sl = timeLED[ipmt] - timeCFD[ipmt];
539b9cb9 319 // time[ipmt] = fCalib-> WalkCorrection( ipmt, Int_t(sl), timeCFD[ipmt] ) ;
d0bcd1fb 320 AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
321 ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
322 Double_t ampMip =( (TGraph*)fAmpLED.At(ipmt))->Eval(sl);
323 Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
324 AliDebug(10,Form(" Amlitude in MIPS LED %f ; QTC %f; in channels %i\n ",ampMip,qtMip, adc[ipmt]));
bce12dc5 325
d0bcd1fb 326 frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
327 frecpoints->SetAmp(ipmt, Float_t( ampMip)); //for cosmic &pp beam
328 frecpoints->SetAmpLED(ipmt, Float_t(qtMip));
bce12dc5 329
2e6a5ee0 330 }
331 else {
332 time[ipmt] = 0;
333 adc[ipmt] = 0;
334 }
335 }
336
337 for (Int_t ipmt=0; ipmt<12; ipmt++){
338 if(time[ipmt] > 1 ) {
339 if(time[ipmt]<besttimeC){
340 besttimeC=time[ipmt]; //timeC
341 pmtBestC=ipmt;
342 }
343 }
344 }
345 for ( Int_t ipmt=12; ipmt<24; ipmt++){
346 if(time[ipmt] > 1) {
347 if(time[ipmt]<besttimeA) {
348 besttimeA=time[ipmt]; //timeA
349 pmtBestA=ipmt;}
350 }
351 }
352 if(besttimeA !=9999999) frecpoints->SetTimeBestA(Int_t(besttimeA));
353 if( besttimeC != 9999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
539b9cb9 354 AliDebug(5,Form(" pmtA %i besttimeA %f ps, pmtC %i besttimeC %f #channel",
d0bcd1fb 355 pmtBestA,besttimeA, pmtBestC, besttimeC));
356 Float_t c = 0.0299792458; // cm/ps
2e6a5ee0 357 Float_t vertex = 99999;
358 if(besttimeA <9999999 && besttimeC < 9999999 ){
9b83615d 359 timeDiff = ( besttimeA - besttimeC) *channelWidth;
d0bcd1fb 360 meanTime = Float_t((besttimeA + besttimeC)/2.);
361 onlineMean = onlineMean ;
362 vertex = meanVertex - c*(timeDiff)/2.; //+ (fdZonA - fdZonC)/2;
2e6a5ee0 363 frecpoints->SetVertex(vertex);
364 frecpoints->SetMeanTime(Int_t(meanTime));
1d7681da 365 frecpoints->SetOnlineMean(Int_t(onlineMean));
539b9cb9 366 AliDebug(5,Form(" timeDiff %f #channel, meanTime %f #channel, vertex %f cm meanVertex %f online mean %i ",timeDiff, meanTime,vertex,meanVertex, onlineMean));
2e6a5ee0 367
368 }
bce12dc5 369 } // if (else )raw data
370 recTree->Fill();
371 if(frecpoints) delete frecpoints;
c41ceaac 372}
bce12dc5 373
374
c41ceaac 375//____________________________________________________________
376
d76c31f4 377void AliT0Reconstructor::FillESD(TTree */*digitsTree*/, TTree *clustersTree, AliESDEvent *pESD) const
dc7ca31d 378{
379
380 /***************************************************
381 Resonstruct digits to vertex position
382 ****************************************************/
383
dc7ca31d 384 AliDebug(1,Form("Start FillESD T0"));
385
d76c31f4 386 TTree *treeR = clustersTree;
dc7ca31d 387
388 AliT0RecPoint* frecpoints= new AliT0RecPoint ();
389 if (!frecpoints) {
390 AliError("Reconstruct Fill ESD >> no recpoints found");
391 return;
392 }
393
394 AliDebug(1,Form("Start FillESD T0"));
395 TBranch *brRec = treeR->GetBranch("T0");
396 if (brRec) {
397 brRec->SetAddress(&frecpoints);
398 }else{
f16935f7 399 AliError(Form("EXEC Branch T0 rec not found"));
dc7ca31d 400 return;
401 }
402
403 brRec->GetEntry(0);
f16935f7 404 Float_t amp[24], time[24];
405 Float_t zPosition = frecpoints -> GetVertex();
406 Float_t timeStart = frecpoints -> GetMeanTime() ;
407 for ( Int_t i=0; i<24; i++) {
94c27e4f 408 time[i] = Float_t (frecpoints -> GetTime(i)); // ps to ns
dc7ca31d 409 amp[i] = frecpoints -> GetAmp(i);
410 }
f16935f7 411 pESD->SetT0zVertex(zPosition); //vertex Z position
dc7ca31d 412 pESD->SetT0(timeStart); // interaction time
413 pESD->SetT0time(time); // best TOF on each PMT
414 pESD->SetT0amplitude(amp); // number of particles(MIPs) on each PMT
5325480c 415
f16935f7 416 AliDebug(1,Form(" Z position %f cm, T0 %f ps",zPosition , timeStart));
dc7ca31d 417
dc7ca31d 418} // vertex in 3 sigma
419
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424